OM/MG TRI-PLOW - Western Plows
Contents
1. CATALOG NO TP 890 TRIGSPLOW OWNER S MANUAL AND MECHANIC S GUIDE SNOWPLOWS PREFACE Welcome to the growing family of WESTERNG Snowplow owners This manual has been prepared to acquaint you with the operation and maintenance of your new WESTERN TRI PLOW and to provide safety information We urge you to read this manual carefully and to follow its recommendations This will help assure profitable and trouble free operation of your TRI PLOW When service is necessary your local WESTERN Distributor knows your TR PLOW best and is interested in your complete satisfaction Return your TRI PLOW to him for maintenance service or any other as sistance you may require We have enclosed in your Owner s Manual Packet a Report Card for your use Your WESTERN TRI PLOW Isarmatic Mark illa Hydraulic Unit is serialized For your information and protection it is wise to record this serial number and keep it in a safe place Your vehicle should have a MINIMUM 4 000 pound front GAWR The vehicle should be equipped with all vehicle manufacturer s options for snowplowing AFETY NOTE Whenever you see this sym bol it notes a SAFETY WARNING For your own protection and safety these warnings must be followed Failure to do so could result in serious bodily injury to yourself or others WESTERN offers a one year limited warranty for all snowplows and ac cessories See separately printed page for this important information WESTERN2. operates only by mechanical means GROUNDED THROUGH ENGINE BLOCK OR BY CABLE DIRECT TO BATTERY Ex 12 VOLT BATTERY MOTOR A SOLENOID I L illa CONTROL GROUND T through Control Cable L D S VALVE COIL ELECTRICAL SCHEMATIC 22 ELECTRICAL SYSTEM When the fila Control is moved into the RAISE wing IN or wing OUT position contacts inside the control are grounded This completes the motor solenoid coil circuit energizing the motor solenoid coil The coils magnetic field causes the contacts inside the motor solenoid to close The closed contacts provide a low resistance high current path from the battery to the motor Current flows from the bat tery through the motor solenoid contacts the motor the motor grounding tab the ground cable and back to the battery Whenever the motor solenoid contacts close electrical power is also supplied to the TRI PLOW switch This switch depending on position will furnish power to one of the two coils on the TRCPLOW valve RAISE BLADE When the Illa Control is moved to the RAISE position the motor solenoid contacts operate the motor turning the pump and the con trol cable moves the shuttle into the lift valve closing the passage to the reservoir Oil from the pump passes through the 4 way valve into the 3 way valve With the reservoir passage closed the oil forces the TO check valve ball off its seat allowing oil to flow around the
3. 15 REMOVING OR MOUNTING BLADE 1 4 Always use care when disconnecting or connecting TRI PLOW from to vehicle Keep feet and hands clear when any part is in motion Inspect lift channel and bolts whenever hooking or unhook ing the blade and before traveling Worn or damaged com ponents could result in the blade dropping to the pavement while driving causing an accident Do not place finger in hitch pin holes to check alignment Any sudden motion of the TRI PLOW could severely injure a finger Keep peopie clear of blade when raising or positioning blade wings SERVICING VEHICLE OR PLOW 1 Always lower the blade to the ground before performing any service to the vehicle or plow or whenever the vehicle is left unattended Use extreme care when searching for electrical or mechani cal problems which could energize the system without warn ing Use only recommended practices when using jumper or quick start power source cables Arcing near the battery could cause the battery to explode Always remove the blade if the vehicle is to be placed on a hoist or lower blade if vehicle is being serviced on the ground CARE MAINTENANCE Your WESTERN TREPLOW is designed for rugged dependable ser vice But like the vehicle on which it is mounted it needs a certain amount of care and maintenance To insure continued good service the following should be checked regularly Check all fasteners mounting bolts h
4. Before traveling position blade so it does not block headiamp beam Do not change blade position while traveling Incor rect plow position blocking headlamp beam can result in an accident WHILE PLOWING 1 2 3 5 Only the driver should be n the vehicle when plow is at tached for plowing or during transport Plowing speed should not exceed 5 MPH Driver must always wear seat belt when plowing snow A hidden obstruction could cause the vehicle to stop sudden ly Never plow with head out of the vehicle windows Sudden stops or protruding objects could cause severe neck or head injury When plowing vehicle speed should not exceed 5 MPH to provide vehicle control PARKING YOUR VEHICLE 1 2 Whenever you park your vehicle lower blade to the ground to prevent accidental blade lowering ALWAYS LOWER blade when vehicle is parked in a warm area or where extreme temperature change is likely this will prevent possible damage to housing or packings due to oil expansion Personal injury could result from sudden blade drop SAFETY AROUND THE BLADE 1 Do not stand between the vehicle and the blade when it is being raised or angled Clearance between vehicle and blade is decreased as blade is raised or wings moved IN Do not place hands feet or any part of body under raised blade Accidental lowering could cause injury Keep people clear of blade when raising or positioning blade wings
5. MAST amp A FRAME Blade wings are hinged at the Mast The A Frame connects the mast to the vehicle The mast attaches to the strong triangular shaped A Frame with a 1 diameter rivet and heavy duty trip springs Heavy 1 diameter hitch pins are used to secure the A Frame to the vehicie mount These hitch pins can t be bent and will not shear in normal operation assuring a solid connection Three heavy duty trip springs hold the mast vertical to the ground The springs are a safety device which allow the blade when in certain positions see page 9 to trip forward and ride over obstacles such as low curbs manhole covers etc without damage to the blade wings vehicle or injury to the driver Eye bolts are used to adjust the tension of the trip springs LIFT MOUNT WESTERN has designed custom lift mount assemblies for most vehicles Due to differences between vehicle models there is only limited interchangeability of lift mount assemblies k The mount is fastened to the underside of the vehicle frame and provides the primary connecting link between the snowplow and the vehicle The lift provides the mounting framework for the hydraulic unit and is mounted on top of the front extensions of the vehicle frame TRIP SPRINGS RI PLOW A FRAME SJ LIFT MOUNT ASSEMBLY TRI PLOW HYDRAULIC POWER The TRI PLOW Isarmatic Mark Illa provides a fast and uniform speed of lifting and wing positioning The TRI PLOW System
6. for service TRI PLOW BLADE MAST amp A FRAME PARTS DIAGRAM USE ONLY GENUINE WESTERN REPLACEMENT PARTS ITEM PARTNO QTY Q9 N O AUN 60950 61015 61005 49212 90238 91205 91415 49071 93010 91109 60045 49213 91109 91882 60947 61016 92117 92071 91882 60945 60946 60974 60970 61062 60977 49215 90160 61018 23039 49214 90061 91333 90061 90159 60161 91333 91338 91416 DESCRIPTION 1 8 1 2 Ft Blade amp Mast Assembly TR PLOW a a Js O IQ a QO IQ na MN ID m c n c Zh m Q NO GI GI O N Blade Assembly Driver Side 8 1 2 Ft Blade Assembly Curb Side 8 1 2 Ft ae Edge Assembly 8 1 2 Ft 1 Required for each blade half rriage Bolt 1 2 13 x 1 3 4 Long Grade 8 Lock Washer 1 2 Hex Nut 1 2 13 Disc Shoe Assembly Heavy Duty Linch Pin Flat Washer 1 SAE Spacer TRI PLOW Center Shoe Kit Flat Washer 1 SAE Roll Pin 1 4 x 1 1 4 Long Coiled Type Mast Hinge Pin Grease Fitting Hex Socket Head Pipe Plug 1 8 NPTF Roll Pin 1 4 x 1 1 4 Long Coiled Type A Frame Box Assembly TR PLOW TREPLOW A Frame U Joint Pivot Yoke Driver Side Pivot Yoke Curb Side Pin Unit Lift Channel Assembly Capscrew 3 4 10 x 4 1 2 Long Grade 5 Pin Trip Spring Replacement Chain Assembly 72 pscrew 3 8 16 x 1 1 2 Long Grade 5 Flat Washer 3 8 Locknut 3 8 16 Capscrew 3 8 16 x 1 1 2 Long Grade
7. or damage to plow or vehicle ARNING Driver must always wear seat belt when plowing snow A hidden obstruc tion couid cause the vehicle to stop suddenly Head neck or body injury can result from hitting the windshield dash or steering wheel Plow with the storm rather than letting snow accumulate ARNING Never plow with head out of the vehicle window Sudden stops or protrud ing objects could cause severe neck or head injuries Overheating is unlikely under normal driving conditions Oc casionally however the plow may be in a position where air is deflected away from the radiator Stop the vehicle and raise or lower the plow slightly to correct overheating Auxiliary headlights and directional lights provide added safety and better lighting for night work and are a National Highway Traffic Safety Administration NHTSA require ment Before transit adjust the raised blade height for maxi mum illumination from auxiliary lights Hard packed snow for better clean up raise the disc shoes so that the cutting edge comes into direct contact with the pavement Use lowest gear to place maximum power behind cutting edge Deep snow conditions move the blade into the V posi tion and raise plow 3 to 4 inches for the initial pass Clean up and widen the initial pass with angle scoop or dogleg blade as the situation requires When plowing deep snow be sure to keep vehicle moving Ballast is required for max imum t
8. 1 1 2 Ram raises the blade in 2 seconds moves a wing IN in 5 seconds and OUT in 4 seconds The Heavy Duty System 2 Ram raises the 12 Volt Cable died a 3 seconds moves a wing IN in 5 seconds and OUT in 4 Ground Cable The Isarmatic amp Mark Illa reservoir should be filled with autornatic transmission ATF fluid Fill the reservoir only thru the fill opening as it is designed to prevent over filling Fill with both wings IN towards the vehicle V position and the llla Control in the LOWER float position Do not collapse the lift ram Systern Capacity All isarmatic Mark Illa Reservoirs 1 1 2 quarts All Isarmatic Mark Illa amp TRI PLOW Cylinders 2 1 4 quarts Replacing the 18 long hose installed in the Isarmatic amp Mark Illa 4 way valve with a standard 38 long hose will allow this power source to be used to operate any WESTERN standard PRO PLOW or heavy weight blade NOTE The TRI PLOW is equipped with coil cartridge valves Changing hydraulic fiuid once per plowing season is required to assure long life for your hydraulic system TRI PLOW VALVE Your TRI PLOW includes an electrically operated TR PLOW Valve to give you full control of blade wing positioning When wing position ing is called for by the llla Control fluid from the Isarmatic Mark Illa unit is directed by this valve to one of the double acting cylinders at tached between a wing and the A Frame The TRI PLOW Valve has two
9. 5 Capscrew 3 4 10 x 3 1 2 Long Grade Capscrew S 10 x 4 Long Grade 5 3 8 16 Locknut 3 4 10 Hex Nut 5 8 11 41 ITEM PART NO QTY DESCRIPTION 36 90490 3 Eyebolt 5 8 11x 4 37 93079 2 Rivet 1 x 3 1 2 38 9507 2 Rivet 1 x4 39 93080 1 Rivet 1 x 5 40 61019 4 Retaining Ring External Hi di 4 Cotter Pin 5 32 x 1 1 2 1 Groove Pin 3 16 X 1 3 4 NOTE Only those items indicated with a PART NUMBER are avail able for service WESTERN PRODUCTS 7777 NORTH 73RD STREET P O BOX 23045 MILWAUKEE WISCONSIN 53223 A DIVISION OF DOUGLAS DYNAMICS INC Western reserves the right under its Product improvement Policy to change construction or design details and furnish equipment when so altered without reference to illustrations or specifications used herein Form No 13551 8901 Printed in U S A
10. LEFT WING Driver side is energized with switch in RIGHT WING IMPORTANT See diagram at right for test points and torque values 1 Disconnect hoses to bottom of TRI PLOW Valve 2 9 steel screwdriver to test coil cartridge assembly stem for good magnetic pull energized H energized proceed to step 3 If not energized test for current at coil to harness con nection in engine compartment Check harness ground next to test point If current available replace coil Hf current not available check harness switch or connections for problem 3 Remove coil from cartridge and remove cartridge Inspect for visible contamination Check for stuck spool using non marring or scratching plastic aluminum or soft brass probe to push spring loaded spool If stuck replace cartridge If free install coil on stem and energize coil while watch ing for spool movement If no movement seen replace cartridge if movement seen clean and oil cartridge Reinstall cartridge and coil NOTE Using probe to move spool may shear contamination which was af fecting spool movement TEST HERE 2 TRI PLOW Valve TEST MAGNETIC PULL HERE COIL RETAINING NUT TORQUE 4 TO 5 FT LBS CARTRIDGE TO MANIFOLD TORQUE 20 FT LBS WATCH HERE 3 EXCESSIVE TORQUE WILL DAMAGE OR AFFECT PERFORMAN F PROBE HERE 3 CARTRIDGE H CUSHION VALVE ADJUSTMENTS NOTE Cushion Vaive Stems are NOT interchangeable between the TRI PLOW
11. Positioning rene 24 4 Way Valve o Gt wina dk xm H Ws X ai T 24 TR PLOWValve 26 Cushion Valves _ pr 27 Overflow Relief Valves 27 Troubleshooting 28 General 29 Electrical Diagnosis 30 Performance Adjustment TITRE Pump Pressure Test 31 3 Way Valve Travel 31 3 Way Valve Adjustments 02 05 32 Lift Valve Adjustment 32 Check Valve Adjustment 04 32 4 Way Valve Adjustment 33 TREPLOW Valve Checks 34 Cushion Valve Adjustments 35 19 SAFETY GUIDELINES TO PREVENT ACCIDENTS THAT COULD RESULT IN SERIOUS IN JURY AND OR DAMAGE TO YOUR VEHICLE OR EQUIPMENT CARE FULLY FOLLOW THESE SAFETY RULES AND TEST PROCEDURES GENERAL Be sure to disconnect the plow prior to performing any tests or making adjustments Scratching denting or marring machined surfaces can make parts un serviceable Cleanliness is essential when servicing the unit SAFETY EQUIPMENT Fire Extinguisher Never work on your vehicle without having a suitable fire extinguisher handy A 5 b or larger CO or dry chemical unit specified for gasoline chemical electrical fires is recommended SAFETY GOGGLES We recommend wearing
12. Valve and 4 way valve Whenever stems are removed apply anti seize compound or grease to threads of stem before assembly DISASSEMBLY amp INSPECTION 1 Remove cushion valve stem Use a magnet to remove ball spring spacer and spring Inspect parts TRI PLOW ISARMATIC CUSHION VALVE ADJUSTMENT Tighten cushion valve stem as much as possible until spring is fully compressed Then back off valve stem rotate counterclockwise 1 1 4 turns This adjustment will cause the cushion valve to open at approximately 3 500 PSI CHECK BALL SPRING SPACER MANIFOLD SPAING 35 2 Replace O rings or complete assembly if damaged 3 If OK place ball on wooden block hold stem seat on ball and lightly strike stem with hammer NOTE Stem can be bent by not striking squarely 4 Reassemble components See note on TRI PLOW valves below and adjust per directions TRI PLOW VALVE CUSHION VALVE ADJUSTMENT Valve stem should be 1 4 TURN OUT FROM BEGINNING OF THREADS IN MANIFOLD This adjustment will cause the cushion valve to open at ap proximately 1 950 PSI 1 4 turn of stem equals approximately 350 PSI AUTION DO NOT ADJUST cushion valves so MANIFOLD THREADS ARE VISIBLE Visible threads can result in damage to your TRI PLOW mount or vehicle NOTE Cushion valve ball and spring spacer may fall into a cross passage during disassembly or assembly Use a magnet or grease to hold part
13. cushion valves built in to prevent damage to the blade wings or your vehicle if obstacles are hit When force against the blade causes pressures in the cylinder to exceed set limits the cushion valves allow oil to escape and the cylinder rod retracts The blade is protected in certain positions see page 9 Plow ing speed should not exceed 5 MPH NOTE If a wing moves inward while plowing DO NOT change cushion valve setting ARNING DO NOT stand between the vehicle and blade or directly in front of blade when It Is being raised lowered or wings positioned Clearance between vehicle and blade decreases as blade is operated Serious bodily injury can result from blade striking a body or dropping on feet or hands CYLINDER CURB SIDE DOUBLE ACTING CYLINDER DRIVER SIDE la CONTROL amp TRI PLOW SWITCH The Illa Control and the TRI PLOW Switch can be mounted on the dash or on the floor Operation is as follows RAISE LOWER Move Illa Control lever UP forward to RAISE the plow Move lever DOWN back to LOWER float the plow Place TRI PLOW toggle switch to the LEFT WING position Moving the lila Control lever to the right moves the wing OUT away from the vehicle Moving the lever to the left brings the wing IN towards the vehicle RIGHT WING Piace TR PLOW toggie switch to the RIGHT WING position Moving the Illa Control lever to the right moves the wing OUT away from the vehicle
14. municipal ordinances for disposing of snow Clearing Parking Lots 1 2 Clear areas in front of buildings first Back drag near walls Work away from buildings towards outer edges of lot Make multiple passes with the blade in the V position to create windrows Move the blade into the dogleg or scoop position to carry snow to end of lot As the stacking location is ap proached begin raising the blade to start the ride up onto the stack ARNING ALWAYS LOWER blade when vehicle is parked in a warm area or where extreme temperature change is likely this will prevent possible damage to housing or packings due to oil expansion Personal Injury could result from sudden blade drop COUNTDOWN FOR PLOWING Before the snow flies check your equipment and make sure it s ready for action Here s an 8 Step Countdown for getting your equipment set for the snowplowing season 8 Check hydraulic system for leaks and cracked or damaged hoses Check oil level plow in V and lift ram NOT col lapsed Replace worn or defective parts 7 Check all mountings of snowplow to vehicle tighten fas teners 6 Repaint mountings with rust resistant high grade enamel Touch up blade with WESTERN Red Paint available in aerosol or quart can 5 Check windshield wipers heaters headlights and auxiliary lights 4 Install auxiliary and flashing lights for safety Vehicle head lamps should be aimed without plow a
15. shuttle into RESERVOIR the lift ram pushing the plunger and blade up When the Illa Control is moved to neutral the pump stops and the shuttle is moved to the centered position The oil in the lift ram pushes the check ball into its seat preventing oil from leaving the lift ram which holds the blade up off the ground TO LIFT RAM LIFT RAM NEUTRAL 3 WAY VALVE POSITIONS 4 WAY VALVE LOWER BLADE When the Illa Control is moved to the LOWER float position the control cable moves the shuttle from its centered position to push the check valve ball off it s seat This opens a passage from the lift ram to the reservoir The weight of the TRI PLOW collapses the lift ram pushing oil past the open check valve ball around the shuttie through the open lift valve back to the reservoir Note No electrical power is used for this function RESERVOIR I t ee mnn xx axe RAISING BLADE 23 WING POSITIONING Two valves control wing positioning 4 Way Valve controls direction IN or OUT TRI PLOW Valve controls which wing LEFT WING or RIGHT WING 4 WAY VALVE NEUTRAL POSITION Fig A Anytime the wings of the blade are NOT being operated the rotor of the 4 way valve is in the neutral position When the plow is raised oil will enter the 4 way valve through the pump port flow around the rotor and exit through the reservoir port WING OUT Fig B When the Illa Control le
16. ARMATIC MARKilla HYDRAULIC v SYSTEM PARTS DIAGRAM CONTINUED 90 bee ay er te 8 102 USE ONLY GENUINE WESTERN REPLACEMENT PARTS 38 ITEM PART NO QTY 8839888388988888 898288 92079 92253 92179 92924 25519 25232 92208 92275 92278 1 1 1 1 2 6 3 2 2 1 2 2 2 1 1 2 2 1 2 1 1 1 1 2 1 1 1 1 1 2 1 2 2 1 1 1 1 1 1 2 DESCRIPTION Pipe Plug 3 8 Pipe Tee 3 8 Reducer Bushing 3 8 x 1 8 Female Adapter Union Swivel 1 8 Hex Nipple 1 4 Hydraulic Coupler 1 4 Street Elbow 1 4 x 90 Long Male Pipe Elbow 1 4 x 90 Long Male Pipe Elbow 1 4 x 90 Short Low Pressure Hose 3 16 x 24 High Pressure Hose 1 4 x 18 High Pressure Hose 1 4 x 38 High Pressure Hose 1 4 x 48 TREPLOW Valve Assembly Street Elbow 1 8 x 90 Cartridge 33 w Jam Nut Coil w Leads Cushion Valve Kit TP 2 Sets Hydraulic Cylinder Assembly 2 x 9 1 2 D A Cylinder Unit 2 x 9 1 2 D A Plunger 2 x 9 1 2 D A Retaining Ring Internal Stop Plug Piston Spacer Piston Retainer Capscrew 9 16 12 x 1 1 4 Gr 5 Special Seal Kit 2 x 9 1 2 D A Capscrew 3 8 16 x 1 1 2 Mount Plate TRI PLOW Valve Assembly Locknut 3 8 16 Nylon Insert Type Capscrew 1 4 20 x 2 1 2 Locknut 1 4 20 Wire Loom 24 Illa Control Assembly TR PLOW Body w Labe TR PLOW Centering Spring Spring Retainer Platen Assembly Ball Stud 39 ITEM PA
17. Moving the lever to the left brings the wing IN towards the vehicle The lever should be moved all the way into the desired position smoothly and without hesitation Always return the lever to the neutral position except when float is desired The LOWER position has a detent to allow the plow to float move up and down on the surface being plowed The Illa Control is equipped with a manual lock to prevent accidental lowering or movement of the wings Push the lock spool down into the center of the cross slots to prevent the plow from being moved Pull the lock spool up out of the cross slots to move the plow Lock spool should be engaged whenever plow is not in use WESTERN S control cables are built for the most brutal winters They re designed with stainless stee wire conduit lined with high den sity polyethylene and permanently lubricated for low temperature operation During the off season the Illa Control lever can be removed by un screwing the lever from the control Store lever in glove box of vehicle LEFT WING Base may be rotated within slots NOTE DO NOT hold Illa Control lever in RAISE or IN OUT position longer than 5 seconds beyond hydraulic function demand To do so increases battery drain and could result in 4 motor burn out LIGHT KIT The rectangular design of the Low Profile Lights provides up to date styling while allowing maximum driver visibility ARNING Before traveling positi
18. RT NO QTY DESCRIPTION 1 Pivot Platen 1 Contact Strip 1 Hex Head Screw 10 x 3 8 Hi Lo 1 Bottom Cover Assembly 1 Bottom Cover 1 Detent Spring 1 Contact Tube Assembly 1 Retaining Ring 3 8 1 Hex Head Screw 6 x 3 8 Hi Lo 10 Hex Head Screw 8 x 5 8 Hi Lo 1 Knob Lever Assembly Standard 1 Knob amp Lever Assembly Short Optional 1 Lens Label 1 Lockspool w Label 1 O Ring 008 1 Cable 90 Optional 1 Cable 108 Black Standard 2 Adjustable Cable 144 Optional 1 Adjustable Cable 108 Standard 1 Adjustable Cable 90 Optional 2 O Ring 010 1 Ball Spring Clip 1 Switch Bracket 1 Toggle Switch SPDT w Knurled Facenut 1 Capscrew Thread Cutting 48 32 x 3 8 1 Lock Washer 8 1 Mounting Bracket 1 Harness TR PLOW 3 Cable Tie 5 Rubber Grommet 5 Tapping Screw 10 x 1 Lock Washer 10 E Parts Listed Below are Furnished in Appropriate Lift Mount Box 125 126 56026 127 93152 128 56028 129 130 56030 131 56032 132 93168 133 93153 134 93154 136 49016 136 49147 137 56039 138 49017 45 55371 139 56158 139 56035 139 56180 140 56130 140 56159 64 25731 141 49019 143 56253 144 56239 145 93157 146 91231 147 56254 148 56247 150 59223 151 25301 152 153 155 56079 156 56043 157 56080 158 56081 159 56082 1 Floor Bracket Universal 1 Rubber Boot For Floor Bracket 1 Dash Bracket 1 Dash Bracket 1 Dash Bracket NOTE Only those items listed with a PART NUMBER are available
19. T SUPPLY OIL TO BASE END OF CYLINDER SUPPLY OIL TO ROD END OF CYLINDER ROTOR Shown in wing in position RESERVOIR PORT RETURN OIL FROM BASE END OF CYLINDER LEFT WING CYLINDER SS 3 WAY VALVE lt R EB s cay DRIVER _ SIDE 3 WAY VALVE ll coiu canr E i Gama RIDGE ASSY 7 lt e ET E A L LR T ZE 5 Ji err CEE EN j 5 3 ECTS BTS i Ice H mer i CO EZ away EXD E away mE CYLINDER EQ VALVE COIL CARTRIDGE J ES var ve A B ASSY B S L Ap eee LEFT WING OUT RIGHT WING OUT LEFT WING IN RIGHT WING IN LEFT WING DRIVER WAY VALVE 3 WAY VALVE COIL CART oll lt Je ONAN in N CURB SIDE i COIL CARTRIDGE i ASSY r l I l L bom an m ou 25 WING POSITIONING Con t MEE SURE TR PLOW VALVE TRI PLOW VALVE This valve determines which wing will be moved Anytime the motor solenoid is activated during RAISE wing IN or wing OUT one of the two coil cartridge assemblies in the TR PLOW valve is ac tivated The TRI PLOW switch next to the illa Control determines which coil will be energized The driver side coil cartridge assembly allows oil flow into or out of the rod end of the left cylinder when de energized the rod end of the right cylinder when energized The curb sid
20. ads protrude from the jam nut with jam nut bottomed on housing 32 CHECK VALVE F 4 ADJUSTMENT a 4 WAY VALVE ENCLOSURE 1 Disconnect lift chain and hoses going to TRI PLOW valve INCREASE WING 2 Remove 4 way 5 sided cover RU aid Move Illa Control between IN and OUT Observe lever move MR FEMALE ment especially for EQUAL TRAVEL IN EACH DIRECTION If un TUR w d CABLE END equal adjust cable per right diagram this page INCREASE WING JAM NUT 4 When travel is equal in both directions lock Illa Control in Ne neutral 4 way lever may be in line or slightly down from the indi cated 3 Point Alignment in diagram BASE END VALVE LEVER PIN CABLE FITTING ATTACHING SCREW 3 POINT ALIGNMENT ROLL PIN Neutral Position WING IN POSSIBLE CAUSE OF INADEQUATE TRAVEL OR INCORRECT VALVE CCW LEVER POSITIONS 1 Dirt or ice buildup in enclosure 45 2 Cable disconnected in valve enclosure or in Illa Control NEUTRAL 3 Binding kinked or broken cable 8 minimum radius 3 POINT ALIGNMENT 4 Set screw not in groove in cable 5 Cable out of adjustment or insufficient ring rotor clearance NOTE If unit is not equipped wi j l is 4 WAY VALVE eaa quipp ith adjustable cable see your Western dis WING OUT CW NOTE Seal cable entry into housing with 56195 Cable Sealant G TRI PLOW VALVE CHECKS Curb side coit is energized magnetized with TRI PLOW switch in
21. after useage TRI PLOW Cylinders If these cylinders leak replace the seals To prevent premature chrome pitting and to increase the life of the hydraulic cylinders of your TRI PLOW store your plow in the V posi tion with cylinders completely retracted Leave the Isarmatic Mark llla unit with the lift channel pushed all the way down Apply grease to plungers and rods not fully retracted it is suggested that the WESTERN Emergency Parts Kit 49205 and the following items be kept in the vehicle for emergency use EMERGENCY PARTS 1 93028 Hitch Pin 1 x3 1 2 1 91965 Hairpin Cotter 1 56225 High Pressure Hose 1 4 x 48 Lg 1 90061 Chain Bolt 3 8 16 x 1 1 2 Grade 5 1 91333 Locknut 3 8 16 1 Flat Washer 3 8 Std 1 10 Adjustable Wrench 1 Medium Screw Driver 1 Pair of Pliers 1 Quart Automatic Transmission Fluid ATF Fill through reservoir fill hole Never fill through motor pump opening Always use WESTERN designed and tested replacement parts if for instance the motor has been removed for servicing Overtilling can damage the unit 17 18 MECHANIC S GUIDE CONTENTS Safety Guidelines 2 2 ee es 20 TRI PLOW Isarmatic Markllla Assembly Diagram 21 Theory of Operation 22 Electrical System 22 RAISE Blade SEGA doe A an 3 23 LOWER Blade cis ans Y Sse X Nh eee 23 Wing
22. does not warranty non Western Service Parts or Acces sories or the damage caused by the use of these unauthorized items The following are registered or unregistered Trade Marks of Douglas Dynamics Inc WESTERN ISARMATIC Roll Action PRO GUARD Hydra Turn OWNER S MANUAL OWNER S MANUAL TRI PLOW Components Blade v ua oso ooa Oe cr se di SES 2 Mast amp A Frame 4 Lift MOUn ou Rg lar dne Wo d a a 4 TRI PLOW Hydraulic Power 2 0 2 RIK SK KI 5 TREPLOW Valve 6 llla Control amp TRE PLOW Switch 7 UMKE i ee ES n EE Won YE e 8 Blade Protection 9 Mounting TR CPLOW to Vehicle 10 Removal Storage of TR PLOW 11 Tips on Using Your TRFPLOW 12 Countdown for Plowing 14 Safe Operating Rules 14 Care 8 16 MECHANIC S GUIDE Contents uis ee EY eee Se Bede 19 PARTS DIAGRAMS TRI PLOW Isarmatic Mark llla Hydraulic System 36 TRI PLOW Blade Mast amp A Frame 40 TRI PLOW COMPONENTS BLADE The two blade wings on your new TREPLOW are constructed of heavy gage steel To increase rigidity and strength each wing is reinforced with several vertical ribs The top edge of each wing is rolled for added strength and im
23. e coil cartridge assembly allows oil flow into or out of CUSHION the base end of the right cylinder when de energized VALVES THROUGH COIL ENERGIZED A the base end of the left cylinder when energized FUNCTION NEUTRAL LOWER a a our N 4 Way Valve Centered Centered Centered Counter Clockwise Coume Clockwise clockwise clockwise Moved into Moved to heck vave 3 Way Valve Lift Valve Open Closed Open Open Open Open Opened by oil ed b Energized Energized RI PIO g 9 Valve The TRI PLOW switch will determine which Coil Cartridge Assembly is energized 26 OVER FLOW RELIEF VALVES DE ENERGIZED FLUID nt FLOW WING POSITIONING Con t l i l TRI PLOW Valve CUSHION VALVES ISARMATIC s COIL When plowing with either of the wings extended all blade positions MARKIIIa eee except fully retracted V oil is trapped in the base end of the cylinder When an obstacle strikes outside the cylinder attaching point of an extended wing pressure rises in the base end of the cylinder As pressure in the base end of the cylinder exceeds the spring force holding the cushion valve ball against it s seat the ball unseats allowing oil to flow to the rod end of the cylinder This atlows the wing to swing IN protecting the blade from damage 3 WAY VALVE The left wing cylinder base end oil is trapped by the VALVE Curb side coil cartridge assembly The right wing CUSHION cyl
24. ere eye or body burns or other personat injury 2 Ground the primary terminal small black wire of the motor solenoid ff motor runs problem is in Illa Control circuit Check for broken wire loose connection or bent contacts in Illa Control Check if tlla Control is grounded through push pull cables If motor does not run 3 By pass jump the secondary large terminals of the motor solenoid lf motor runs replace the motor solenoid If motor does not run 4 Remove motor and check pump shaft H tight repair replace pump If loose replace motor ELECTRICAL SCHEMATIC SEE PAGE 22 B PERFORMANCE ADJUSTMENT Performance standards for TRI PLOW Isarmatic Mark Ilia 2 Ram 2 Ram Wingin sSseconds TT WingOut 4seconds _ 4 seconds if your unit does not meet the above times perform the following se quence of adjustments to your Isarmatic amp Mark Illa and then retest cycle times A t Verify the vehicle electrical system has the battery fully charged TRI PLOW valve coil cartridge assemblies may not function correctly below 12 0 volts Verify hydraulic pump pressure of 1700 1900 PSI 1 1 2 ram or 1450 1850 PSI 2 ram See C page 31 Verify 3 way valve lever travel per D page 31 Adjust lift valve per E1 page 32 Adjust check valve per E2 page 32 Adjust 4 way valve per F page 33 NOTE Whenever a wing is being retracted the maximum pressure in the S
25. es in your clothing and burn your skin or eyes Disconnect the cable from the negative battery terminal before replacing the motor motor solenoid or Illa Control During Electrical Diagnosis ARNING Protect top of battery Sparks from testing operations could cause bat tery gases to explode causing severe eye or body burns or other personal injury HYDRAULIC SAFETY Be sure to replace frayed kinked cracked or otherwise damage hydraulic components NOTE Manufacturer assumes no liability for accidents or damages not withstanding the fact that suggestions have been followed ISARMATIC MARKIilla ASSEMBLY DIAGRAM LOCKSPOOL LOCKED UNLOCKED CABLE TO MOTOR SOLENOID CABLE To ENGINE GROUND TO MOTOR TRI PLOW OIL FILL 3 WAY PLUG WITCH ae 4 WAY CABLE A ADJUSTAB GASKET Si ear TEM 4 WAY VALVE GASKET CUSHION ELIO amp COVER PLATE 4 WAY VALVE LIFT VALVE X X DRAIN PLUG _ 3 WAY VALVE GASKET amp COVER PLATE 3 WAY VALVE LEVER 21 ASSEMBLIES THEORY OF OPERATION The TRI PLOW Isarmatic Mark lila Hydraulic System performs four functions RAISE the blade LOWER the blade Position blade wings IN Position blade wings OUT E MOTOR ISARMATIC MARK Illa TRI PLOW SWITCH TRI PLOW VALVE g 2 a J Three of these functions RAISE wing IN wing OUT are ac complished by electrical and mechanical means The fourth LOWER
26. ig 15 RAISE CW POSSIBLE CAUSE OF INADEQUATE TRAVEL OR INCORRECT VALVE LEVER POSITIONS Dirt or ice buildup in enclosure Cable disconnected in valve enclosure or in Ilia Control Binding kinked or broken cable 8 minimum radius Set screw not in groove in cable Lift valve too far in see E1 page 32 NOTE Seal cable entry into housing with 56195 Cable Sealant m Q PS 31 E 3 WAY VALVE ADJUSTMENT E1 LIFT VALVE ADJUSTMENT Move blade wings into scoop position From initial adjustment below using 1 8 turn increments turn OUT counterclockwise lift valve until RAISE does NOT function properly Turn lift valve iN in 1 32 turn in crements until unit is JUST ABLE to lift plow E2 CHECK VALVE ADJUSTMENT Hold check valve hex socket wrench while loosening or tightening jam nut To prevent O ring from blowing out loosen jam nut 1 4 turn maximum If plow will not lower or lowers too slowly turn valve IN CW If plow lowers too fast turn valve OUT CCW LIFT VALVE INITIAL ADJUSTMENTS IF VALVES HAVE BEEN DIS TURBED OR REMOVED LIFT VALVE Remove cable from pin and place valve lever in neutral position see D page 31 Turn lift valve IN until it is flush to the casting surface Rotate lever to the RAISE position It should stop 1 16 to 1 8 from enclosure bottom If not turn valve IN or OUT until this dimension is obtained CHECK VALVE Turn check valve IN until three 3 full thre
27. ight blade for wide path plowing or stacking snow Use this position to transport plow between job sites Angled Blade Move one wing OUT and the other wing IN to form an angled blade in either direction for general plowing and widening V Blade Move both wings IN towards the vehicle for ini tial break through plowing and plowing paths or walkways Scoop Blade Move both wings OUT away from the vehicle to form a scoop to carry snow with minimum spil loff Dogleg Biade Move one wing to straight blade position and the other OUT to scoop biade position for clean up of windrows For best road clearance the straight blade position is recommended during transport The scoop and V positions are NOT RECOM MENDED during transport N 5 eo S e ee 4 SCOOP BLADE 5 DOGLEG BLADE TRI PLOW BLADE MAST amp A FRAME CURB SIDE WING HOOK CHAIN HERE GREASE FITTING HINGE PIN i DRIVER SIDE WING i S PANY LIFT CHANNEL W 3 4 BOLTS BLADE GUIDE WITH FLAG p 2 anum f LINCH PIN WASHERS SPACER HEAVY DUTY DISC SHOE CHAIN 9 3 8 BOLT j RIVET W COTTER PIN N N LA I T ALI Y amen Se Q 2 A 4 CENTER DISC SHOE M PIN UNIT a RIVET PIVOT YOKE Ea o P D S PIN EYE CUTTING BOLT TRI PLOW W NUTS iia A U JOINT SEE PAGES 40 amp 41 FOR PART NUMBERS RIVET W COTTER PIN 3
28. inder base end oil is trapped by the 4 way valve VALVES as the de energized curb side coil cartridge assemb gt WING ly allows oil to pass through the cartridge The right 3 WAY VALVE EVEINDER wing cylinder has the TR PLOW cushion valve and SHUTILE lt m the Isarmatic amp Mark lila cushion valve in the system The TRI PLOW hydraulic system has two sets of cushion valves lsarmatic Mark Illa 4 way valve manifold set at 3500 PSI TRI PLOW Valve block set at 1950 PSI OVERFLOW RELIEF VALVES As the cylinder collapses more oil wilt leave the base end of cylinder than can enter the rod end The excess oil wil unseat the overflow relief valve ball to let the extra oil back to reservoir through the 1 8 external hose CUSHION VALVE COIL CART RIDGE ASSY NOTE Whenever a wing cylinder is being retracted the maximum pressure in the system is limited by the overflow relief valves in the TRI PLOW Valve TROUBLESHOOTING GUIDE lia CONTROL PROBLEM DESCRIPTION DEFINE PROBLEM AND FOLLOW STEPS BELOW POSITION Wing will not move or moves Perform Wing IN slowly Times Performance 27 e T Check m Wing IN 5 seconds Adjustment B OUT 4 seconds i i page 34 page 35 couplers Plow will not raise or raises too Diagnosis A l page 17 T slowly Times page 17 Verify 3 way valve lever Adiust lift LT in See 1 1 2 Ram 2 seconds travel See D page 31 page 32 pac
29. king nut 2 Ram 4 seconds 9 FURTHER TROUBLESHOOTING REQUIRES THE USE OF TEST Back Dragging hammer install spring and plug SEE a STERN i Disconnect illa motor runs solenoid is shorted Replace solenoid DISTRIBUTOR Neutral Motor piis to run ln Control wire from motor stops short is in primary Illa Control circuit OR motor solenoid Isolate and repair SEE WESTERN HYDRA LECTRIC TEST KIT AND OR Wing IN Blade raises while positioning WESTERN SERVICE MANUAL or OUT wing IN or OUT Adjust lift valve out See E1 page 32 E Remove hex headed plug for Overflow Relief Valves Clean and inspect Neutral Wing will not remain IN when roo ball into hole reseat ball by lightly striking flat punch with Verify 3 way Blade lowers in neutral valve lever travel EA PAN POR ei pse SU valve ou Inspect O ring amp baat See i Note See E2 page 32 ji Lower Blade lowers too fast Manua Manufacturer assumes no liability for accidents or damages notwithstanding the Blade will not lower or lowers Adjust check valve in fact that suggestions have too slow See E2 page 32 Check lift ram packing nut been followed GENERAL INFORMATION Most service can be performed with the hydraulic components left on the vehicle This should be done whenever possible because it per mits evaiuation of the entire system vehicle electrical system cables Illa Control TRI PLOW va
30. lug holes to check alignment Sudden motion of the TRI PLOW could severely injure a finger 3 Inserthitch pins and hairpin cotters 4 Connect hoses between TR PLOW valve and cylinders See diagram at right IMPORTANT Temperature changes from cold to warm may cause pressure within the TRI PLOW cylinders great enough to prevent recoupling of the hoses H this occurs place a clean rag over the male coupler and lightly tap the ball until the pressure is released MS BLU 4 5 Move the llia Control into the LOWER float position 6 Push lift channel all the way down Pull the chains tight and hook them to the lift channel After they are hooked they will have the correct amount of slack for plow float 7 Raise lower and angle both wings to assure that all sys tems are in working order NOTE Care must be taken in routing of hydraulic hoses to prevent pinching of hoses between vehicle bumper and A Frame 10 REMOVAL STORAGE OF TRI PLOW WESTERN S recommended quick disconnect system will allow you to easily remove the TRI PLOW from your vehicle The Blade Mast and A Frame are usually removed and stored as a complete assembly REMOVING YOUR TRI PLOW 1 Drive your vehicle to the location where you will store the TRI PLOW Move the wings into the V position and lower plow to the ground Leave illa Control in LOWER float position Storing plow in V protects eyunder rods from rusting or
31. lve etc as well as saving considerable time Disconnect the NEGATIVE battery cable before replacing motor solenoid or Illa Control ARNING DO NOT stand between the vehicle and blade or directly in front of blade when it is being raised lowered or wings positioned Clearance between vehicle and blade decreases as blade Is operated Serious bodily injury can result from blade striking a body or dropping on feet or hands PACKING NUT ADJUSTMENT Isarmatic amp Mark illa lf leaking tighten packing nut NOT MORE THAN 1 4 TURN AFTER YOU FEEL PACKING NUT CONTACT PACKINGS Over tightening affects cylinder operation and packing life 3 WAY VALVE COVER PLATE 8 MIN RADIUS BENDS IN CABLE CHECK VALVE ADJUSTMENT 3 Way Valve SEAL CABLE ENTRY i TO HOUSING WITH 56195 CABLE LE SEALANT LIFT VALVE ey ADJUSTMENT 1 3 Way Valve USHIO 4 WAY VALVE CUSHION VALVES AWAY VALVE OFFSET SCREWDRIVER NOTE Manufacturer assumes no liability for accidents or damages not withstanding the fact that suggestions have been followed ELECTRICAL DIAGNOSIS Condition Motor does not run with Hla Control in RAISE wing IN or OUT positions Battery has sufficient charge to start engine 1 Check ali electrical cables and connections including grounds Clean and tighten if necessary ARNING Protect top of battery sparks from testing operations could cause bat tery gases 1o explode causing sev
32. lve Assembly O Ring 012 O Ring 112 Jam Nut 5 8 18 Half Dog Point Set Screw 410 24 x 3 8 Socket Pipe Plug 1 8 Late Models Camshaft ITEM PART NO QTY 37 45 39 46 47 48 49 50 51 53 42 55371 55587 55572 55573 91259 55350 25635 22511 56131K 91331 55511 55381 N IN IO m w db A oA Q oA LA N m me oh eh Q vh eh ek A DESCRIPTION O Ring 008 O Ring 112 Hub Nut Valve Lever Lock Washer 6 External Tooth Pan Head Screw 6 32 x 1 4 Cover Plate Gasket Valve Cover Plate 4 Way Valve Assemb Half Dog Point Set Screw 10 24 x 3 8 Cable amp Linkage Enclosure Socket Head Capscrew 1 4 20 x 1 1 2 Torsion Spring Valve Lever Lock Washer 6 External Tooth Pan Head Screw 46 32 x 1 4 Cushion Valve Kit 2 Sets 4W Valve Gasket amp O Ring Kit Not Shown Manifold Gasket Not Included O Ring 015 w 49020 Valve O Ring 008 Shim Spacer 0005 Silver Standard Shim Spacer 00035 Clear Option O Ring 010 Cover Gasket Cable Sealant Not Shown Enclosure Cover Hex Head Tapping Screw 10 24 x 5 8 Capscrew 3 8 16 x 3 4 Ground Cable 60 6 Ga Black Lock Washer 3 8 Hex Nut 3 8 16 Battery Cable 60 4 Ga Regt Battery Cable 22 4 Ga Red Motor Solenoid Heavy Duty Capscrew 1 4 20 x 3 4 Flat Washer 1 4 Standard Locknut 1 4 20 Hose Grommet Cable Clamp TRI PLOW IS
33. on blade so it does not block headiamp beam Do The light kit includes a set of approved dual beam rectangular Halogen headlamps plus combination park and turn signals brackets and a switch Pre wired harness Patented with plug in module requires no head not change blade position while traveling Incor rect plow position blocking headiamp beam can result in an accident lamp wire splicing Lights conform to Federal Safety Standards Replacement 2E1 Seal Beam headiamps are available through Chrys Piow headlamps are to be used ONLY when piow is attached ler Product dealers or may be ordered through NAPA dealers or other parts houses Vehicle headlamps are to be used when plow is NOT attached LOW PROFILE LIGHT KIT BLADE PROTECTION Your TRI PLOW has two forms of obstacle protection CUSHION VALVE PROTECTION When force against the blade causes pressure in the cylinder to ex BLADE TRIP PROTECTION ceed a set limit the cushion vaive allows oil to escape and the The trip springs allow the blade to trip forward and ride over cylinder rod retracts This protection is available when the blade is in obstacles when the blade is in certain positions see below certain positions see below of the cylinders n 1 STRAIGHT BLADE ANGLED BLADE V BLADE SCOOP BLADE DOGLEG BLADE FUNCTION First pass General plowing Initial breakthrough Carry snow Clean up of plowing and and widening and plowing paths
34. pitting ARNING Keep hands and feet clear of blade and A Frame when removing or at taching TRI PLOW Moving or falling assembiles can cause serious bodily injury Disconnect hoses from cylinders Cross connect male coupler of cylinder hose to female coupler on each cylinder Cross connect male coupler of TRI PLOW valve hoses to female couplers on TRI PLOW valve See diagram at right This method of hose connection prevents foreign matter from entering the hydraulic system while the TRi PLOW is off the vehicle Push the lift channel ail the way down Leave lift channel in down position to protect lift ram from rusting and pitting Pull hairpin cotters from hitch pins at rear of A Frame and remove hitch pins Store pins in convenient location or in stall into A Frame lugs after disassembly Unhook chains 11 ARNING Inspect lift channel and bolts whenever hooking or unhooking the plow and before traveling Worn or damaged com ponents could result in the plow dropping to the pavement while driving causing an accident HOSE CONNECTIONS WITH PLOW REMOVED TIPS ON USING THE TRI PLOW Operating a vehicle equipped with a TRI PLOW is not difficult if you follow these few simple suggestions Be sure you know of any obstructions hidden beneath the snow bumper stops in parking lots abutments curbs sidewalk edges shrubs fences or pipes sticking up from the ground Flag these if necessary to prevent an accident
35. proved appearance The exclusive Roll Action blade is designed to roll snow ahead and to the side instead of just pushing snow This action gives your vehicle a power reserve as it moves snow easily You move more snow and move it faster using less power saving fuel and reducing wear and tear on both truck and plow l Blade life is extended with replaceable high carbon steel cutting edges bolted to the bottom of each wing Periodically switch cutting edges to the opposite wing to equalize wear Cutting edge ends are rounded to help ride over obstacles and prevent digging and gouging The blade also features heavy duty adjustable disc type skid shoes These rotate 360 for longer wear and better blade flotation over all surfaces See the Care amp Maintenance section for adjustment Your new TRI PLOW blade is protected with PRO GUARD a baked on powder finish that resists cracking corrosion scratching and rust The PRO GUARD coating many times thicker than paint b will maintain its luster and glossy good looks longer than any other snowplow blade finish in the industry pum 1 STRAIGHT BLADE NS m 2 ANGLED BLADE s Z 3 V BLADE Blade guides with replaceable flags are furnished with your TRI PLOW These help improve operator visibility and blade control BLADE POSITIONS The TRI PLOW can be used in five basic plowing positions 1 Straight Blade move both wings to form a stra
36. raction See Step 1 of Countdown for Plowing page 14 Stacking snow move the blade into the scoop or straight blade position As the stacking location is approached begin raising the blade to start the ride up onto the stack NOTE Stacking snow with either wing in less than straight blade position could result in damage to the bumper Driveways and sidewalks make first pass with the wings in the V position Widen as required using V angle scoop or dogleg blade as the situation requires Traveling for normal travel to and from jobs carry the blade in the straight position DO NOT carry blade in scoop or V position For long trips the blade should be removed from the front of the vehicle The two most common snowplowing sites are driveways and parking lots General directions for clearing both areas are detailed below Clearing Driveways 1 Head into drive with blade in V Stay to building side of drive Widen drive by rolling snow away from building with angied blade If garage is at end of driveway plow up to within several vehicle lengths of garage Then push as much snow as pos sible off driveway With raised straight blade drive through remaining snow to building Drop blade and back drag snow away from garage door at least one vehicle length Repeat if neces sary Back vehicle to garage door and with angle or scoop blade plow forward toward street removing remaining snow from driveway Check
37. s together or position valve manifold so parts can be dropped straight in te TRI PLOW ISARMATIC niran MARKIIIa HYDRAULIC SYSTEM PARTS DIAGRAM gt SEE PARTS LIST PAGE 39 USE ONLY GENUINE WESTERN REPLACEMENT PARTS 36 ITEM PART NO QTY Isarmatic TRI PLOW Hydraulic Unit w 4W Valve OANDMAGN O O O G I J gt N RR SSSSSBRSLSS LBRSBRNBY 49217 55946 55591 90666 93165 93166 49211 56185 25620 91220 mek mA wd LA Qt N N N b Au DESCRIPTION Main Housing 1 1 2 Ram Service Expansion Plug 1 4 Hex Head Tapping Screw 10 24 x 5 8 Capscrew Thread Forming 1 4 20 x 1 3 4 Capscrew Thread Forming 5 16 18 x 1 1 4 Hydraulic Pump Assembly MTE Suction Filter O Ring 115 Flat Washer 1 4 Standard Belleville Spring Washer Capscrew 5 16 18 x 2 1 4 Gr 5 Gasket Motor Assembiy 4 Flange w Bearing amp Seal 4 Oil Seal Only Lock Washer 7 16 External Tooth Capscrew 7 16 14 x 1 1 4 Capscrew 7 16 14 x 1 1 2 Ground Clip Packing Nut 1 1 2 Ram Packing Set w Wiper 1 1 2 Ram Wiper Ring 1 1 2 Ram Packing Set 1 1 2 Ram Special Washer 1 1 2 Ram Plunger 1 1 2 x 6 Ram Retainer Ring 1 1 2 Ram Lift Valve w 2 25730 O Rings O Ring 012 Socket Head Pipe Plug 1 4 Early Models Base Lug w 25618 O Ring O Ring 216 Shuttle Check Va
38. safety goggles when working on your vehicle to protect your eyes from battery acid gasoline and dust and dirt flying off moving engine parts LOOSE CLOTHING AND LONG HAIR MOVING PARTS Be very careful not to get your hands hair or clothing near any moving parts such as fan blades belts and pulleys Never wear neck ties or loose clothing when working on your vehicle JEWELRY Never wear wrist watches rings or other jewelry when working on your vehicle You ll avoid the possibility of catching on moving parts or causing an electrical short circuit which could shock or burn you VENTILATION The carbon monoxide in exhaust gas is highly toxic To avoid as phyxiation always operate vehicle in a well ventilated area If vehicle is in an enclosed area exhaust shouid be routed directly to the out side via leakproof exhaust hose SETTING THE BRAKE Make sure that your vehicle is in park or neutral and that the parking brake is firmly set HOT SURFACES Avoid contact with hot surfaces such as the engine radiator and hoses SMOKING AND OPEN FLAMES Never smoke while working on your vehicle Gasoline vapor is highly flammable and the gas formed in a charging battery is explosive BATTERY Do not lay tools or equipment on the battery Accidentally grounding the POS battery terminal can shock or burn you and damage wiring the battery or your tools and testers Be careful of contact with battery acid It can burn hol
39. ttached to the vehicle Plow headlamps should be aimed with plow at tached and in raised position 3 Use chains on tires if additional traction is needed 2 To permit TR PLOW to rise and fall float with contour of ground push lift channel all the way down Pull chains tight and hook them to the lift channel After they are hooked they will have the correct amount of slack for plow float ARNING Inspect lift channel and bolts whenever hooking or unhooking the plow and before traveling Worn or damaged com ponents could result in the plow dropping to the pavement while driving causing an accident 1 We suggest a minimum of 500 pounds ballast for pick up trucks NOW HEAD FOR THE SNOW SAFE OPERATING RULES TRANSPORTING PLOW Plow vehicle should be equipped with all vehicle manufacturer s op tions for snowplowing 1 Only the driver should be in the vehicle when plow is at tached for plowing or during transport 2 When transporting plow engage Ilia Control lock to prevent plow from being lowered accidently 3 Under ideal road conditions transporting plow should be within posted road speeds Reduce speed when crossing railroad tracks road irregularities or as road conditions deteriorate 4 For normal travel to and from jobs carry the blade in straight blade position DO NOT carry plow in scoop or V positions For long trips the plow should be removed from the front of the vehicle ARNING
40. ut to correct tension and lock in place with first nut PRO GUARD Blade Finish When the PRO GUARD powder coated finish is nicked or scratched repair the blade surface with WESTERN Red Paint in aerosol or quart can Black iron Paint Parts painted black should be repainted with a rust resis tant high grade enamel Oll Level Move blade to V position cytinders fully retracted With chains properly hooked to lift channel raise plow and then lower to the ground DO NOT collapse lift channel Fill unit with ATF fluid thru fill plug in tee at left rear corner of reser voir behind motor see diagram Oll Change Changing fluid once each plowing season is required to as sure long life for your hydraulic system Completely drain the hydraulic reservoir and refill with new automatic trans mission fluid ATF A drain plug is located in the bottom of the right front corner of the reservoir see diagram System Capacity ail Isarmatic Mark Illa Reservoirs 1 1 2 quarts all lsarmatic Mark Illa Reservoirs TRI PLOW Cylinders 2 1 4 quarts NOTE isarmatic Mark illa Lift Ram Periodically check lift ram nut to see if it has loosened If loose or leakage appears while lifting tighten not more than 1 4 turn after you feel packing nut contact the packing Over tightening affects operation and life of the packing Packings not used for a period of time may show signs of oil weep which usually disappear
41. ver is moved to the right the control cable pulis the 4 way valve rotor 45 deg clockwise This moves the 2 recessed pockets in the side of the rotor so that one pocket connects the pump port to the lower manifold port The other pocket connects the upper manifold port to the reservoir port Oil from the pump fiows in the pump port through the recessed pocket out the lower manifold port through the TRI PLOW valve to the base end of a cylinder As the rod extends oil leaving the rod end of the cylinder passes through the TRI PLOW valve into the upper manifold port through the recessed rotor pocket out the reservoir port through the 3 way valve to the reservoir __ WING IN Fig C When the Illa Control lever is moved to the left the control cable pushes the 4 way valve rotor 45 deg counterclockwise This positions a rotor pocket over the pump port and the upper manifold port The other pocket connects the lower manifold port to the reservoir port Oil from the pump flows in the pump port through the rotor pocket out the upper manifold port through the TR PLOW valve to the rod end of a cylinder As the rod retracts oil leaving the base end of the cylinder passes through the TR PLOW valve into the lower manifold port through the rotor pocket out the reservoir port through the 3 way valve to the reservoir 24 CUSHION VALVES RETURN OIL FROM ROD END OF CYLINDER ROTOR Shown in wing out position RESERVOIR POR
42. with minimum windrows stacking or walkways spilloff BLADE TRIP PROTECTION FULL trip action NO trip action NO trip action NO trip action when fully angled Trip action ONLY when an obstacle is Struck at the point of the V SOME trip when slightly angled Relieves ONLY CUSHION Relieves ONLY NO cushion relief Relieves ONLY Relieves ONLY VALVE when an obstacle when extended cylinder rods are when an obstacle when an obstacle PROTECTION is struck outside wing strikes an already retracted is struck outside is struck outside obstacle outside of the cylinders of the cylinders of the cylinder of the cylinders MOUNTING TRI PLOW TO VEHICLE ARNING DO NOT stand between the vehicle and biade or directly in front of 1 Hook chains to lift channel blade when It is being raised lowered or wings positioned Clearance between vehicie and blade decreases as blade is operated Serious bodily injury can result from blade striking a body or dropping on feet or hands ARNING inspect lift channel and bolts whenever hooking or unhooking the plow and before traveling Worn or damaged com ponents could result in the plow dropping to the pavement while driving causing an accident 2 Lift slowly using hydraulic power until lugs A Frame align with holes on mount ARNING Do not place finger In A Frame or mount
43. ydraulic and electri cal connections make sure they are tight Annually clean and retighten positive and negative connec tions at 4 motor At beginning of the plowing season inspect and test your battery Recharge or replace if necessary Suggested MINI MUM vehicle electrical system 70 amp hr 550 CCA bat tery 55 amp alternator Check all plugs and seals for cil leaks Repair as necessary Disc Shoe Adjustment 1 2 3 To adjust shoes raise blade and place on blocking Remove linch pin wing shoes or groove pin center shoe and slide shoe down out of bracket Remove one or more washers from shoe stem and reinstall shoe into bracket Place removed washers onto shoe stem above brack et Install linch pin wing shoes or groove pin center shoe NOTE Do not discard any washers 16 Cutting Edge Replace cutting edge when worn to the bottom of blade sheet To equalize wear raise blade and place on blocking Remove cutting edges from both wings and switch cutting edges to opposite wings Mast amp Wing Hinge Pin Lubricate hinge pin with multipurpose grease before storage at end of season Trip Spring Adjustment Trip springs are adjusted by tightening the eyebolts located on top of the A Frame Springs are correctly adjusted when the coils begin to separate a sheet of paper should pass between the second and third coils To adjust tension back off nut closest to spring Tighten other n
44. ys tem is limited by the overflow relief valves in the TRI PLOW Valve If chattering is heard when moving wings IN check lift valve and 4 way valve adjustments ARNING DO NOT stand between the vehicle and blade or directly in front of blade when It is being raised lowered or wings positioned Clearance between vehicie and blade decreases as blade is operated Serious bodily Injury can result from blade striking a body or dropping on feet or hands N Paauw C PUMP PRESSURE TEST 1 Disconnect lift chains and hoses going to TRI PLOW valve 2 Install 3 000 PSI minimum guage into female coupler on 4 way valve 3 Move Illa Control to wing IN TR PLOW switch in either posi tion and read guage 4 if pressure is 1700 1900 PSI 1 1 2 ram or 1450 1850 PSI 2 ram pump pressure is OK ff pressure is low remove pump clean or replace filter and adjust pressure 1 4 turn equals approximately 225 PS on all pumps PRESSURE RELIEF ADJUSTMENT SUCTION FILTER PRESSURE RELIEF ADJUSTMENT SUCTION FILTER D 3 WAY VALVE TRAVEL 1 Disconnect lift chain and hoses going to TRI PLOW valve 2 Remove 3 way rectangular cover 3 Move llla Control between RAISE and LOWER Observe valve lever travel and positions 4 Lock ilta Control in neutral 3 way lever should be in the neutral position as shown 3 WAY VALVE LOWER COW NEUTRAL HORIZONTAL Y
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