Service Manual PGP030/031 Series PGP050/051 Series
Contents
1. ALWAYS USE AN ACCURATE GAUGE WHEN ADJUSTING THE RELIEF VALVE PRESSURE SETTING Parker Hannifin Corporation Gear Pump Division Youngstown OH Service Manual HY09 SM030 031 050 051 US Recommended Test Procedures Recommended Test Procedure To be sure that there is an adequate supply of oil for the pump maintain at least one gallon of oil for each gom of pump capacity If one section of a tandem pump is being tested make sure that all other sections not being tested are adequately supplied with oil If any of the other sections run dry or if the plugs are left in the ports serious and permanent damage will result The oil should be a good quality hydraulic oil rated at 150 SSU at 100 F with the oil temperature held at 120 F plus or minus 5 F Test procedures are described in detail in SAE handbooks see Hydraulic Power Pump Test Procedure SAE J745c The feed line must be of adequate size with no more than 5 mercury vacuum adjacent to the pump inlet As a rule the feed line must provide a feed flow velocity not in excess of 8 feet per second Hot oil must not be fed into a cold pump It may seize Jogging the pump may prevent seizure Operate the pump at least two minutes at zero pressure and at moderate speed not over 1500 rpm If the pump becomes hot to touch it is binding and may seize This doesn t happen often but if it does the pump will have to be disassembled and rebuilt with extra care2. Service Manual HYO9 SMO30 031 050 051 US Service Manual PGPO30 031 Series PGPO50 051 Series Effective August 2002 Supersedes June 1989 Commercial 3 Hydraulics Service Manual HY09 SM030 031 050 051 US Table of contents Series PGP 030 031 Series PGP 050 051 DESCRIPTION PAGE NO General Instructions cccccseesseeeeeeceseseeeeeeeeeees 3 Disassembly instructions cccseeeeeeeeeeeeeeeees 4 6 Assembly instructions uenseneenennennennenenneen en 6 9 Guidelines for acceptable wear 9 TOOLS ee era en 10 Lubrication and oil recommendations 11 12 Recommended start up procedures for new or rebuilt DUMP ccceeceeeeeeeeeeeeeeeeees 12 Recommended test procedure u0 2 0 13 OMEN ol Salbe 14 Use Genuine Parker Replacement Parts N WARNING FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE PRODUCTS AND OR SYSTEMS DESCRIBED HEREIN OR RELATED ITEMS CAN CAUSE DEATH PERSONAL INJURY AND PROPERTY DAMAGE This document and other information from Parker Hannifin Corporation its subsidiaries and authorized distributors provide product and or system options for further investigation by users having technical expertise It is important that you analyze all aspects of your application and review the information concerning the product or system in the current product catalog Due to the variety of operating conditions and applications for the
3. Check Assemblies or Plug Ring Seals Roller Bearings Pocket Seals Thrust Plates 0 Integral Drive Shaft and Gear Set Parker Hannifin Corporation Gear Pump Division Youngstown OH Service Manual HY09 SM030 031 050 051 US Disassembly Instructions Series PGP 030 031 Series PGP 050 051 Start Disassembly Here CAUTION 1 If prying off sections becomes necessary take extreme care not to mar or damage machined surfaces Excessive force while prying can result in misalignment and seriously damage parts 2 Do not force parts during assembly and never use an iron hammer 3 Gears are closely matched therefore they must be kept together as sets when removed from a unit Handle with care to avoid damage to the journals or teeth 4 Never hammer roller bearings into bores Use only an arbor press or other suitable tool Commercial Hydraulics 1 Mount the pump in a vise with the shaft end pointing down Index mark all sections with a punch Be sure to align these marks when reassembling 3 Lift off the port end cover If necessary to pry loose refer to caution note If the thrust plate remains in the gear housing it can be tapped out later with a wooden hammer handle Be careful not to distort the thrust plate 5 Carefully remove the drive and driven gears without allowing the teeth to come into rough handling contact Keep these gears together because they are a matched set Examine an
4. Remove the bearing snap ring with a small screwdriver or awl Commercial Hydraulics Series PGP 030 031 Series PGP 050 051 8 Lift or pry off the first section gear housing Be careful not to damage machined surfaces If the thrust plate remains in the gear housing remove as described in Step 3 10 Pry the thrust plates from the shaft end cover port end cover or bearing carrier with a screwdriver or similar tool Avoid distorting the thrust plates Visually inspect thrust plates for wear or damage Replace if necessary See page 9 Remove and discard all rubber pocket seals and gasket seals 12 It is generally advisable to replace ring seals when rebuilding the unit To replace remove the drive gear bearing with a bearing puller and remove the ring seal from the bottom of the bearing bore 14 Use a bearing puller to remove the outboard bearing Parker Hannifin Corporation Gear Pump Division Youngstown OH Service Manual HY09 SM030 031 050 051 US Disassembly Assembly Instructions Series PGP 030 031 Series PGP 050 051 15 With the mounting face down remove the double lip seal by inserting the special seal removal tool see Tool List Pg 10 into the notch between the double lip seal and the shaft end cover Tap the seal out and discard 1 Stone off all machined surfaces with a medium grit carborundum stone 2 If the bearings have been removed deburr bearing
5. any offer to sell is limited to these terms and conditions Any terms or conditions in addition to orinconsistent with those stated herein proposed by Buyer in any acceptance of an offer by Seller are hereby objected to No such additional different or inconsis tent terms and conditions shall become part of the contract between Buyer and Seller unless expressly accepted in writing by Seller Seller s accep tance of any offer to purchase by Buyer is expressly conditional upon Buyer s assent to all the terms and conditions stated herein including any terms in addition to or inconsistent with those contained in Buyer s offer Acceptance of Seller s products shall in all events constitute such assent 2 Payment Payment shall be made by Buyer net 30 days from the date of delivery of the items purchased hereunder Amounts not timely paid shall bear interest at the maximum rate permitted by law for each month or portion thereof that the Buyer is late in making payment Any claims by Buyer for omissions or shortages in a shipment shall be waived unless Seller receives notice thereof within 30 days after Buyer s receipt of the shipment 3 Delivery Unless otherwise provided on the face hereof delivery shall be made F O B Sellers plant Regardless of the method of delivery however risk of loss shall pass to Buyer upon Seller s delivery to a carrier Any delivery dates shown are approximate only and Seller shall have no liability for any del
6. bores Rinse parts in a solvent Air blast all parts and wipe with a clean lintless cloth before starting assembly 3 Grip the shaft end cover in a vise with the mounting face down Examine the plug or the 2 check valves to be sure that they re tightly in place Replacement is necessary only if parts are damaged Remove with a screwdriver or a special check valve tool see Tool List page 10 4 If plug or check valves are being replaced screw in new parts tightly Stake the plug with a prick punch at both ends of the screwdriver slot and around the edges Screw the check valves in tightly with the tool Peen edge of hole 1 32 to 1 16 with 1 1 2 diameter steel ball Commercial 6 Parker Hannifin Corporation Gear Pump Division e Hydraulics Youngstown OH Service Manual HY09 SM030 031 050 051 US Assembly Instructions Series PGP 030 031 5 ASSEMBLY STEPS 5 6 7 9 AND 11 APPLY TO THE SHAFT END COVER BEARING CARRIERS AND THE PORT END COVER If the ring seals are being replaced insert into the bottom of drive the gear bearing bore The notch in the ring seal MUST BE VISIBLE This is a check to be certain that the notched side is next to the bearing 7 Before inserting a new lip seal in the shaft end cover coat the outer edge of the lip seal and its recess with Permatex Aviation Form A Gasket No 3 Non hardening Sealan or equivalent With the metal side of the lip seal up pre
7. pin make certain that the hole is clean and free from burrs Start the pin into the hole gently and straight tapping lightly with a soft hammer gasket seal Squirt oil over the gears to provide initial lubrication when the pump is started For the PGP031 051 Line up the dowels with the matching holes When the parts are parallel squeeze them together or gently tap alternately over dowels with a plastic hammer until the parts become parallel and move smoothly together Do not force 15 With the thrust plates mounted on the bearing carrier as in steps 9 10 11 position it on the gear housing so that the roller bearings receive the journals of the drive and driven gears Make sure that the drain port in the bearing carrier is on the suction or inlet side if the unit is being built as a pump Motors do not have drain vents in the bearing carrier Make sure that the index marks are properly aligned Insert dowel pins PGP031 051 only For multiple assemblies only 16 Insert the connecting shaft in the spline of the drive gear For multiple assemblies only 18 Slide the second section gear housing over the gears and tap it tight against the bearing carrier with a soft hammer Be careful not to pinch the gasket seal Squirt oil over the gears to provide initial lubrication when pump is started For PGP031 051 line up the dowels and the holes in the 2 castings When parts are parallel squeeze th
8. sold pursuant to this contract infringes the Intellectual Property Rights of a third party Seller s obligation to defend and indemnify Buyer is contingent on Buyer notifying Seller within ten 10 days after Buyer becomes aware of such allegations of infringement and Seller having sole control over the defense of any allegations or actions including all negotiations for settlement or compromise If an item sold hereunder is subject to a claim that it infringes the Intellectual Property Rights of a third party Seller may atits sole expense and option procure for Buyer the right to continue using said item replace or modify said item so as to make it noninfringing or offer to accept return of said item and return the purchase price less a reasonable allowance for depreciation Notwithstanding the foregoing Seller shall have no liability for claims of infringement based on information provided by Buyer or directed to items delivered hereunder for which the designs are specified in whole or part by Buyer or infringements resulting from the modification combination or use in a system of any item sold hereunder The foregoing provisions of this Part 10 shall constitute Seller s sole and exclusive liability and Buyer s sole and exclusive remedy for infringement of Intellectual Property Rights If a claim is based on information provided by Buyer or if the design for an item delivered hereunder is specified in whole or in part by Buyer Buyer sh
9. taken to remove burrs and to assure freedom from binding Gradually increase pressure on the pump until the desired test pressure has been reached This should take about five minutes Pump output flow should run close to rated catalog performance figures which are averaged from testing several pumps A 5 lower reading may be used as a rated minimum if new or relatively new parts have been used Worn parts which meet the guidelines for acceptable wear See page 9 may be used to GPM OELIVERY at 1800 rom 100 psi 7000 psi 0 bar a 14 15 25 20 50 Commercial cA 3 Hydraulics Series PGP 030 031 Series PGP 050 051 rebuild the pump however the performance rating may decrease A 10 15 lower rating can be expected Many repairmen measure the output at normal operating speed and at zero pressure then again at 1000 psi or the operating pressure of the equip ment and allow a volume decrease approximating the listing below This is a suggested reference only which makes allowance for re used parts PGP030 050 pumps are generally tested to 2000 psi maximum At test speeds other than 1800 rpm gpm delivery will vary almost proportionately but the same drop off figures should be used Be sure to run the pump in the direction for which it was designed and built Driving the pump in the wrong direction will build up pressure behind the shaft seal damaging it and necessitating replacem
10. the high pressure side Motor thrust plates are grooved on both sides For PGP031 051 the relief groove on all the unidirectional thrust plates must be towards the high pressure outlet side of the pump PGP030 050 series pump and motor plates resemble the motor plate illustration 10 With the pocket seals facing down place the thrust plate over the bearings in the shaft end cover Tap thrust plate with a soft hammer to about 1 32 from the machined surface 12 Insert the splined end of the drive shaft into the special steel sleeve see Tool List page 10 Lightly grease the drive shaft and sleeve Insert the integral gear and drive shaft with sleeve into the shaft end cover with a twisting motion Be careful not to damage the double lip seal Push down carefully until the gear rests against the thrust plate Remove the steel sleeve Insert the driven gear a Commercial T7 Parker Hannifin Corporation Gear Pump Division G Hydraulics Youngstown OH Service Manual HY09 SM030 031 050 051 US Assembly Instructions Series PGP 030 031 Series PGP 050 051 13 Grease the new gasket seals and insert them into the grooves in both sides of all gear housings 14 Slide the first section gear housing over the gears and tap itwith a soft hammer until it rests For the PGP031 051 tightly against the shaft Examine all dowel pins end cover See page 9 Before Be careful not to pinch the inserting a
11. MBLE YOUR HYDRAULIC EQUIPMENT IN A CLEAN AREA Our pictures show a Model PGP051 Notes in the text cover variations between this unit and the other models It is important to airblast all parts and wipe them with a clean lintless cloth before assembly USE CAUTION IN GRIPPING ALL PARTS IN THE VISE TO AVOID DAMAGING MACHINED SURFACES A pump must be driven in the direction of rotation for which it was built otherwise the pressure will blow the shaft seal Check the exploded view and notes at right for proper direction of rotation Parker s Replacement Parts Parker s replacement parts are of original equipment standards For assured quality of material and work manship and for compatibility in assembly USE ONLY GENUINE PARTS lt is a good idea to check all replacement parts before installing them to be certain that they were not damaged in shipment Commercial cA 3 Hydraulics Service Manual Series PGP 030 031 Series PGP 050 051 Toms shaded apply to multiple assemblies only Plug 5 in position B gives clockwise rotation Plug 5 in position A gives counterclock wise rotation Check valves in both positions give bi directional rotation PARTS LIST Gasket Seals Dowel Pins PGP031 051 only Bearing Carrier Connecting Shaft Matched Gear Set Gear Housing Port End Cover Washers Studs or Cap Screws Nuts Snap Ring Outboard Bearing Seal Shaft End Cover
12. all defend and indemnify Seller for all costs expenses or judgments resulting from any claim that such item infringes any patent trademark copyright trade dress trade secret or any similar right 11 Force Majeure Seller does not assume the risk of and shall not be liable for delay or failure to perform any of Seller s obligations by reason of circumstances beyond the reasonable control of Seller hereinafter Events of Force Majeure Events of Force Majeure shall include without limita tion accidents acts of God strikes or labor disputes acts laws rules or regulations of any government or government agency fires floods delays or failures in delivery of carriers or suppliers shortages of materials and any other cause beyond Seller s control 12 Entire Agreement Governing Law The terms and conditions set forth herein together with any amendments modifications and any different terms or conditions expressly accepted by Seller in writing shall constitute the entire Agreement concerning the items sold and there are no oral or other representations or agreements which pertain thereto This Agree ment shall be governed in all respects by the law of the State of Ohio No actions arising out of the sale of the items sold hereunder or this Agreement may be brought by either party more than two 2 years after the cause of action accrues right to alter discard or otherwise dispose of any special tooling or other 9 91 P pro
13. aximum allowable Wear in the shaft seal areas indicates oil contamination Wear or damage to splines keys or keyways necessitates replacement Thrust Plates The thrust plates seal the gear section at the sides of the gears Wear here will allow internal slippage meaning the oil will bypass within the pump The maximum wear allowable is 002 Replace the thrust plates if they are scored eroded or pitted Check the center of the thrust plates where the gears mesh Erosion here indicates oil is contamination Pitted thrust plates Sm indicate cavitation or oil aeration Discolored thrust plates indicate overheating probably insufficient oil Dowel Pins If either the dowel pin or dowel hole is damaged the pin machined casting or both must be replaced If more than reasonable force is required to seat dowels the cause may be poorly deburred or dirty parts cocking of dowel in the hole or improper pin to hole fit Continued on the following page Parker Hannifin Corporation Gear Pump Division Youngstown OH Service Manual HY09 SM030 031 050 051 US Tool List Guidelines for Acceptable Wear continued Bearings If the gears are replaced the bearings must 2 also be replaced Bearings should fit into the bore with a u press fit A near hand fit Seals and Gaskets amp Replace all of the rubber and polymer seals S whenever disassembling the pump Include all of the O rings the pocket seals beh
14. ays in delivery 4 Warranty Seller warrants that the items sold hereunder shall be free from defects in material or workmanship for a period of 18 months from date of shipment from Parker Hannifin Corporation THIS WARRANTY COM PRISES THE SOLE AND ENTIRE WARRANTY PERTAINING TOITEMS PROVIDED HEREUNDER SELLER MAKES NO OTHER WARRANTY GUARANTEE OR REPRESENTATION OF ANY KIND WHATSOEVER ALL OTHER WARRANTIES INCLUDING BUT NOT LIMITED TO MER CHANTABILITY AND FITNESS FOR PURPOSE WHETHER EXPRESS IMPLIED OR ARISING BY OPERATION OF LAW TRADE USAGE OR COURSE OF DEALING ARE HEREBY DISCLAIMED NOTWITHSTANDING THE FOREGOING THERE ARE NO WARRAN TIES WHATSOEVER ON ITEMS BUILT OR ACQUIRED WHOLLY OR PARTIALLY TO BUYER S DESIGNS OR SPECIFICATIONS 5 Limitation Of Remedy SELLER S LIABILITY ARISING FROM ORIN ANY WAY CONNECTED WITH THE ITEMS SOLD OR THIS CONTRACT SHALL BE LIMITED EXCLUSIVELY TO REPAIR OR REPLACEMENT OF THE ITEMS SOLD OR REFUND OF THE PURCHASE PRICE PAID BY BUYER AT SELLER S SOLE OPTION INNO EVENT SHALL SELLER BE LIABLE FOR ANY INCIDENTAL CONSEQUENTIAL OR SPECIAL DAMAGES OF ANY KIND OR NATURE WHATSOEVER INC LUDING BUT NOT LIMITED TOLOST PROFITS ARISING FROM ORIN ANY WAY CONNECTED WITH THIS AGREEMENT OR ITEMS SOLD HEREUNDER WHETHER ALLEGED TO ARISE FROM BREACH OF CONTRACT EXPRESS OR IMPLIED WARRANTY OR IN TORT IN CLUDING WITHOUT LIMITATION NEGLIGENCE FAILURE TO WARN OR STRICT LIABILITY 6 Changes Reschedules and Ca
15. cosity Index 90 minimum Aniline Point 175 minimum Recommended Additives Foam depressant rust and oxidation inhibitors Other Desirable Characteristics e Stability of physical and chemical characteristics e High demulsibility low emulsibility for separation of water air and contaminants e Resistant to the formation of gums sludges acids tars and varnishes e High lubricity and film strength Commercial cA 3 Hydraulics Series PGP 030 031 Series PGP 050 051 General Recommendations A good quality hydraulic oil conforming to the characteristics listed above is essential to the satisfactory performance and long life of any hydraulic system Oil should be changed in regular schedules in accordance with the manufacturer s recommendations and the system should also be periodically flushed Oil temperature in reservoir must not exceed 200 F 93 3 C with a maximum temperature of 180 F 82 2 C recommended Higher temperatures will result in rapid oil deterioration Reservoir capacity should equal in gallons the pump output in gpm or the total gom of all pumps where there is more than one in the system Oil poured into the reservoir should pass through a 100 mesh screen Pour only clean oil from clean containers into the reservoir A 100 mesh screen may be used in the suction line leading to the pump A suction filter should be of sufficient size to handle twice the pump capacity It must b
16. d replace if necessary See page 9 For multiple assemblies only 4 2 Remove the 4 cap screws on single units or the 4 hex nuts studs and washers on multiple units with a socket wrench 4 Lift the gear housing from the gears Take care not to damage machined surfaces For PGP031 051 Pry the gear housing from the gears and off the dowels from opposite sides taking care not to damage machined surfaces For multiple assemblies only 6 Lift or pry off the bearing carrier carefully to prevent damage to contact face and edges For PGP031 051 pry the bearing carrier off the dowels from opposite sides Take care not to damage the machined surfaces Lift off the bearing carrier For multiple assemblies only Parker Hannifin Corporation Gear Pump Division Youngstown OH Service Manual HY09 SM030 031 050 051 US Disassembly Instructions 7 Remove the drive gear connecting shaft For multiple assemblies only 9 Remove the driven gear and the integral gear and drive shaft Keep these together as they are a matched set Examine and replace if necessary Be careful not to damage the machined surfaces of the gears 11 Examine all roller bearings for scoring spalling or pitting If replacement is necessary remove the bearings with a bearing puller 13 If the pump is equipped with an out board bearing place the shaft end cover in a vise with the mounting face up
17. duce pump life Experience indicates that the use of FR fluids can be disastrous unless certain precautions are followed DO NOT USE ANY FIRE RESISTANT FLUIDS OR NON PETROLEUM OILS WITHOUT CONSULTING OUR TECHNICAL SERVICE DEPARTMENT e These suggestions are intended as a guide only OBTAIN YOUR FINAL FLUID RECOMMENDATIONS FROM YOUR FLUID SUPPLIER Commercial Hydraulics Darker 12 Recommended Start up Procedure For New or Rebuilt Pump Before installing a new or rebuilt pump back off the main relief valve until the spring tension on the adjusting screw is relieved This will avoid the possibility of immediate damage to the replacement unit in the event that the relief valve setting had been increased beyond the recommended operating pressure prior to removing the old unit Before connecting any lines to the pump fill all ports with clean oil to provide initial lubrication This is particularly important if the unit is located above the oil reservoir After connecting the lines and mounting the replacement unit operate the pump at least two minutes at no load and at low rpm 400 min During this break in period the unit should run free and not develop an excessive amount of heat If the unit operates properly speed and pressure can then be increased to normal operating settings Reset the main relief valve to its proper setting while the pump is running at maximum operating engine motor speed for the vehicle
18. e cleaned and checked regularly to avoid damage due to contamination and cavitation Normal Temperatures O F 1 8 C to 100 F 37 8 C Ambient 100 F 37 8 C to 180 F 82 2 C System Be sure your oil is recommended for the temperatures you expect to encounter Cold Weather Operation Oils for use in cold weather should have a viscosity not exceeding 7500 SSU at the minimum start up temperature A pour point of at least 20 F below start up temperature is recommended Start up procedures should allow for a gradual warm up until the oil reaches a reasonably fluid state Continued on the following page Parker Hannifin Corporation Gear Pump Division Youngstown OH Service Manual HY09 SM030 031 050 051 US Recommended Start up Procedures Series PGP 030 031 Series PGP 050 051 Lubrication and Oil Recommendations continued The Use of Other Fluids e Automatic Transmission Fluid ATF General experience here has been satisfactory however ATF oils are sometimes too expensive for normal use in hydraulic systems e Diesel Fuel or Kerosene Coal Oil Though sometimes used as dilutants for cold weather operations these fluids are not recommended as they are not sufficiently refined products e Fire Resistant Fluids Of the several different types only the inverted emulsion types may be used without changing to special seals packing gasket hose etc compositions Their use may materially re
19. em together or gently tap alternately over the dowels with a plastic hammer until parts move smoothly together Do not force Insert dowel pins PGP031 051only For multiple assemblies only 17 Insert the drive and the driven gears of the second section into their respective bearings Make certain gears are in contact with the thrust plate face For multiple assemblies only 19 Place the port end cover over the gear journals and tap tightly against the gear housing Be careful not to pinch the gasket seal For PGP031 051 Align the dowels with the holes in the mating casting Being careful not to pinch the gasket seal tap the port end cover lightly in the center between bearing bores to engage the dowels and to move parts together in final seating 20 Thread the 4 fasteners Cap screws and washers or studs washers and nuts into the shaft end cover and tighten alternately or cross corner Rotate the drive shaft with a 6 wrench to make certain there is no binding in the pump Commercial 8 Parker Hannifin Corporation Gear Pump Division e Hydraulics Youngstown OH Service Manual HY09 SM030 031 050 051 US Guidelines for Acceptable Wear 21 Afterthe fasteners are tight and you are sure there is no internal binding torque the diagonally opposite fasteners to 200 ft Ibs 2400 in Ibs Series PGP 030 031 Series PGP 050 051 22 If the unit is equipped with an outboard bearing g
20. ent Since it is rarely feasible to test motors on dynamometers the practical procedure is to test them as pumps running complete testing procedures in each direction After completing testing procedures the pump is ready for installation and immediate duty operation on the equipment Again it must be remembered that to prevent seizure hot oil must not be fed into a cold pump GPM DROP OFF AT 1500 6317105 bar 2000 psi 1d0 bar 7500 p317175 bat 34 to 45 4 to 5 aW to 6 Parker Hannifin Corporation Gear Pump Division Youngstown OH Offer of Sale The items described in this document and other documents or descriptions provided by Parker Hannifin Corporation its subsidiaries and its authorized distributors are hereby offered for sale at prices to be established by Parker Hannifin Corporation its subsidiaries and its authorized distributors This offer and its acceptance by any customer Buyer shall be governed by all of the following Terms and Conditions Buyer s order for any such items when communicated to Parker Hannifin Corporation its subsidiary or an authorized distributor Seller verbally or in writing shall constitute acceptance of this offer 1 Terms and Conditions of Sale Alldescriptions quotations proposals offers acknowledgments acceptances and sales of Seller s products are subject to and shall be governed exclusively by the terms and conditions stated herein Buyer s acceptance of
21. free number 1 800 C PARKER 1 800 272 7537 In Europe call 00800 C PARKER H 00800 2727 5374 The Climate amp Industrial Controls Group designs manufactures and markets system control and fluid handling components and systems to refrigeration air conditioning and industrial customers worldwide The Aerospace Group is a leader in the development design manufacture and servicing of control systems and components for aerospace and related high technology markets while achieving growth through premier customer service The Fluid Connectors Group designs manufactures and markets rigid and flexible connectors and associated products used in pneumatic and fluid systems The Seal Group designs manufactures and distributes industrial and commercial sealing devices and related products by providing superior quality and total customer satisfaction The Hydraulics Group designs produces and markets a full spectrum of hydraulic components and systems to builders and users of industrial and mobile machinery and equipment The Filtration Group designs manufactures and markets quality filtration and clarification products providing customers with the best value quality technical support and global availability The Instrumentation Group is a global leader in the design manufacture and distribution of high quality critical flow components for worldwide process instrumentation ultra high pu
22. ind the thrust plates the shaft seal and the gasket seals series PGP 030 031 Series PGP 050 051 Check Valves Examine the small check valves in the shaft Ap SB end cover to make sure that they are intact and functioning If there are no check valves here make sure that the high pressure side of the shaft end cover is plugged Tool List e Arbor press e Awl e 1 1 2 dia steel ball e Bearing puller Owatonna Tool Co MD 956 or equivalent e Clean lintless cloths e Deburring tool an old file with the cutting teeth ground off e Machinists hammer e Soft hammer e Permatex Aviation Form A Gasket No 3 Non hardening Sealant or equivalent e Medium grit carborundum stone e Oil and grease e Snap ring pliers e Prick punch e Sharp razor blade e Scale 1 32 for graduations e Small screwdriver e Torque wrench e Vise with 6 minimum open spread e Bar for lip seal installation Note For P30 P31 use 1 3 4 dia by 2 bar For P50 P51 use 2 1 2 dia by 2 bar e Special steel sleeve PaO PS1 au au PSO P51 aver sar All axtermal sunacse must be free Of scraiches ad bars md CA Commercial Hydraulics E chamber m ee 5 1 Br ROD Mog DRILL ROC Chack alee Hol amp mele bot a 4 langih l i drili rod The drawing gives Geiails dor making ihis handy igoal Daal emih Hal can be fas made from an oid Sond rier Heat tra fin and heared a6 hian G
23. ncellations Buyer may request to modify the designs or specifications for the items sold hereunder as well as the quantities and delivery dates thereof or may request to cancel all or part of this order however no such requested modification or cancel lation shall become part of the contract between Buyer and Seller unless accepted by Seller in a written amendment to this Agreement Acceptance of any such requested modification or cancellation shall be at Seller s discretion and shall be upon such terms and conditions as Seller may require 7 Special Tooling A tooling charge may be imposed for any special tooling including without limitation dies fixtures molds and patterns acquired to manufacture items sold pursuant to this contract Such special tooling shall be and remain Seller s property notwithstanding payment of any charges by Buyer In no event will Buyer acquire any interest in apparatus belonging to Seller which is utilized in the notwithstanding any charges paid by Buyer Unless otherwise agreed Seller shall have the 8 Buyer s Property Any designs tools patterns materials drawings confidential information or equipment furnished by Buyer or any other items which become Buyer s property may be considered obsolete and may be destroyed by Seller after two 2 consecutive years have elapsed without Buyer placing an order for the items which are manufactured using such property Seller shall not be responsible for any los
24. perty in its sole discretion at any time Commercial 14 Parker Hannifin Corporation Darker Hydraulics Gear Pump Division Youngstown OH Parker Hannifin Corporation 6035 Parkland Blvd a _ Cleveland Ohio 44124 4141 Parker Hannifin Corporation Telephone 216 896 3000 Fax 216 896 4000 www parker com About Parker Hannifin Corporation Parker s Charter Parker Hannifin is a leading global motion control To be a leading worldwide manufacturer of components company dedicated to delivering premier customer and systems for the builders and users of durable service A Fortune 500 corporation listed on the New goods More specifically we will design market and York Stock Exchange PH our components and manufacture products controlling motion flow and systems comprise over 1 400 product lines that control pressure We will achieve profitable growth through motion in some 1 000 industrial and aerospace markets premier customer service Parker is the only manufacturer to offer its customers a choice of hydraulic pneumatic and electromechanical Product Information motion control solutions Our North American customers seeking product infor Company has the largest distribution network in its mation the location of a nearby distributor or repair field with over 7 500 distributors serving nearly services will receive prompt attention by calling the 400 000 customers worldwide Parker Product Information Center at our toll
25. rin 1 ihe tp bo en he match behand ihe shalt seal C Aad _ Dia Drill Through Hole 1 nn a i The special Shoo see i bad it ira tte dire ahaf En Pe lip Seal Wile Lert Qe Ang cain B m made tron bar shock Lor Ehe A PS LEE a u 1 MM ulm a Zi har Fi tha PEA PSI TEL aT marelar 4 Hai Tre drawer and char orab Heils lor makireg ihis foo aa fF a ae H i gt Li Kd 1 0 Parker Hannifin Corporation Gear Pump Division Youngstown OH Service Manual HY09 SM030 031 050 051 US Lubrication and Oil Recommendations Lubrication and Oil Recommendations All parts with the exception of the outboard bearing are lubricated by the hydraulic oil in the circuit Particular attention must be paid to keep clean oil in the circuit system Whenever there is a pump or motor failure and there is reason to feel that metal particles may be in the system the oil must be drained the entire system flushed clean and any filter screens thoroughly cleaned or replaced New oil should be supplied for the entire system Oil suitable and recommended for use in circuits involving Parker s pumps and motors should meet the following specifications Viscosity 50 SSU minimum operating temperature 7500 SSU maximum starting temperature e 150 to 225 SSU 100 F 37 8 C generally 44 to 48 SSU 210 F 98 9 C generally Approximate SSU Oil 100 F a7 8 C 210 F 98 9 C Grade Vis
26. rity medical and analytical applications The Automation Group is a leading supplier of pneumatic and electro mechanical components and systems to automation customers worldwide as Commercial 15 Parker Hannifin Corporation Gear Pump Division e Hydraulics Youngstown OH Hydraulics Parker Hannifin Corporation Service Manual Gear Pump Division HY09 SM030 031 050 051 US 1775 Logan Avenue 08 02 T amp M 2 5M Youngstown OH 44501 USA Tel 330 746 8011 Fax 330 746 1148 www parker com
27. s or damage to such property while it is in Seller s possession or control 9 Taxes Unless otherwise indicated on the face hereof all prices and charges are exclusive of excise sales uSe property occupational or like taxes which may be imposed by any taxing authority upon the manufac ture sale or delivery of the items sold hereunder If any such taxes must be paid by Seller or if Seller is liable for the collection of such tax the amount thereof shall be in addition to the amounts for the items sold Buyer agrees to pay all such taxes or to reimburse Seller therefore upon receipt of its invoice If Buyer claims exemption from any sales use or other tax imposed by any taxing authority Buyer shall save Seller harmless from and against any such tax together with any interest or penalties thereon which may be assessed if the items are held to be taxable 10 Indemnity For Infringement of Intellectual Property Rights Seller shall have no liability for infringement of any patents trademarks copy rights trade dress trade secrets or similar rights except as provided in this Part 10 Seller will defend and indemnify Buyer against allegations of infringement of U S Patents U S Trademarks copyrights trade dress and trade secrets hereinafter Intellectual Property Rights Seller will defend at its expense and will pay the cost of any settlement or damages awarded in an action brought against Buyer based on an allegation that an item
28. se products or systems the user through its own analysis and testing is solely responsible for making the final selection of the products and systems and assuring that all performance safety and warning requirements of the application are met The products described herein including without limitation product features specifications designs availability and pricing are subject to change by Parker Hannifin Corporation and its subsidiaries at any time without notice Offer of Sale The items described in this document are hereby offered for sale by Parker Hannifin Corporation its subsidiaries or its authorized distributors This offer and its acceptance are governed by the provisions stated in the Offer of Sale i Parker Hannifin C ti F commercia Sy reg e Hydraulics Youngstown OH Service Manual HY09 SM030 031 050 051 US General Instructions PGPO30 031 050 051 Service Manual General Instructions These service instructions will familiarize you with Parker s single and multiple pumps e their component parts e the relative position of each part proper methods for assembly or disassembly of the units To facilitate the repair of these units and before any work is done we suggest that you first read all of the steps used in disassembly and assembly Dirt is the enemy of any hydraulic system The first requirement of good maintenance of hydraulic equipment is cleanliness MAKE SURE YOU DISASSEMBLE AND ASSE
29. ss it into the mounting flange side of the shaft end cover with an arbor press and bar See Tool List page10 On the PGP030 031 series make certain that the lip seal is fully seated in the recess On the PGP050 051 series do not attempt to bottom out the seal press it in only until it is flush with the face of the recess Wipe off surplus sealant 9 Grip the shaft end cover in a vise with the mounting face down Cut 2 pocket seals 7 32 long from the pocket seal strip Grease these pocket seals well and insert them into the middle slots on the reverse side of the thrust plate 11 Cut 4 pocket seals approximately 1 4 long from the pocket seal strip Insert one pocket seal into each of the slots in the thrust plate Push each pocket seal all the way in so that it touches the roller bearings Tap the thrust plate down firmly against the machined surface with a soft hammer Use a sharp razor blade to trim the exposed end of the pocket seal square and flush with the thrust plate Series PGP 050 051 6 If any bearings have been removed from the shaft end cover port end cover or bearing carrier replace the bearings by pressing them into the bearing bore with an arbor press 8 Check all thrust plates for wear Replace if necessary see page 9 Note that the thrust plates for pumps and motors are different Pump thrust plates have a single relief pocket and must be installed with this groove on
30. uide the bearing into its recess in the shaft end cover This is not a press fit Insert the snap ring into its groove to retain the outboard bearing Guidelines for acceptable wear Gear Housings Wear in excess of 005 cutout necessitates replacement of the gear housing Place a straight edge across the bore If you can slip a 005 feeler gage under the straight edge in the cut out area replace the gear housing Pressure pushes the gears against the housing on the low pressure side ai lfm As the hubs and bearings wear the CA cutout becomes more pronounced i Excessive cutout in a short period of time indicates excessive pressure or oil contamination If the relief valve settings are within prescribed limits check for shock pressures or tampering Withdraw oil sample and check it and the tank for dirt Where cut out is moderate 005 or less the gear housing is in good condition and both ports are of the same size the housing may be flipped over and reused Gears Any wear on the gear hubs detectable by touch or in excess of 002 necessitates replacement Scoring _ grooving or burring of the outside diameter of teeth requires replacement Nicking grooving or fretting of teeth surfaces also necessitates replacement Commercial cA 3 Hydraulics Drive Shafts Replace if there is any wear detectable by touch in the seal areas or at the drive coupling 002 wear is the m
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