Aeris Installation Instructions
Contents
1. Figure 37 Troubleshooting AERIS Control Box installation debugging techniques e With the entire system connected apply power Does the red light on the circuit board blink at power up If no then check power connections 12 and Ground continuity to the circuit board and 7 pin connector e After power up works successfully take off the power lead and the light lead and connect them together the light should light up If no then the connection to the light yellow line is not connected or the light is not grounded Page 41 of 42 Ms CRIS Aeris Installation and Service Manual e lf both light and board power up then connect all wires back to the circuit board and verify that system powers up and blinks three times on a power up event both on the circuit board and at the front light on the trailer If the lights on the circuit board blink but the light on the trailer does not then you have a circuit board problem e If both the light on the trailer and the light on the board blink 3 times next check that the blinking stops or that the light on the front of the trailer goes to a solid on state or consistent blink state or an off state Those are all three valid states If the light on the trailer keeps blinking but in an inconsistent manner like two fast then one slow this means that pressure has not reached the control box yet Check that the air control valve is in the on position If the control valve is in the on position t2. AERIS LOGO CONTRACT INFO ETC IP COMMUNICATION DECAL FOR DRIVER WARNING FRONT OF TRAILER OUTSIDE FRONT COVER INSIDE COVER Figure 35 System Installation Check Standard Aeris System e After the Aeris system is completely installed but before the trailer is put back into service all air system connections need to be checked for leaks Apply a soapy water solution to all air connections If bubbles appear at any fitting or air connection repair the connection Follow Instructions Below e Make sure the petcock valve on the trailer air tank is closed e Fill the trailer air system and set all tire pressures just below the target pressures e Ensure the mini ball valve on the controller box is in the open position e Verify the trailer is connected to 12 volt power source e Verify the Red light on the circuit board in the control box is blinking If after applying 12 volts you don t see the light blinking disconnect the 12 volt power source and check all wire terminal connections and connections to the 7 pin connector box correct e Indicator light on trailer should come on and blink 3 times If insufficient pressure exists in the system the light will blink in a pattern of 1 long and then 2 short blinks if low flow exists the light will stay on constantly and if high flow exists the light will blink constantly e f the indicator light remains on and the system continues attempting to inflate one or more
3. Hubcap Axle Air lines Air line from Aeris hubcap axle air lines hooked to Outlet on control box 1 4 Airline Tee Fittings 1 4 tube tee airline fittings to hook air lines from axles to air tank Control Box Air lines and electrical wiring run to control box for Aeris system Mini Ball Valve Air shut on off valve Must be in Open position for Aeris system to work Page 28 of 42 MSA CRIS Aeris Installation and Service Manual Top View of Trailer Ys nylon air tubing Tubing is continuous from Control Control box not to scale Box to each Some components not wheelend as shown for clarity shown here LR Left Rearwheelend LF Left Frontwheelend RF Right Frontwheelend RR Right Rear wheelend Note Left amp Right is relative to the a l in color for Driver clarity All air tubing is black in color Paes 6 SmartSense Airline Attachment Figure 23 SmartSense Page 29 of 42 Ms CRIS Aeris Installation and Service Manual Tire Hose Installation e Attach air hoses to the hubcap and the inner and outer valve stems The hose with the 180 fitting attaches to the outer valve stem Turn the valve stem swivel nut on the fitting until the rubber gasket just makes contact with the valve stem then turn the nut 1 2 turn more to ensure proper sealing Now push the hubcap end of the hose into the brass hose adapter fitting and turn the nut until the fitting is snug For final tightening turn the check
4. Page 16 of 42 MSA CRIS BS TEMCO Aeris Installation and Service Manual 2 HAND HOLE WHEEL AIR LINE IN CENTER OF HAND HOLE NN HAND HOLE EDGE HAND HOLE EDGE Figure 11 Dual wheels with 2 hand holes or aluminum wheels with small round valve stem clearance holes require a second alignment procedure to ensure the hoses will not touch the wheel To ensure perfect alignment between the hose attachment fittings on the hubcap and valve stems the wheels may need to be rotated one stud clockwise or counterclockwise See Figure 11 Axle Hose Installation WARNING Before pushing the airline tubing into the axle disassemble the pass through fitting and place the components over the end of the air line in this order See Figure 12 e Pass Through Cap e Rubber O Ring e Pass Through Fitting Body Now place a piece of masking tape over the end of the air line or plug the end of it so no debris can get inside the line as it is being pushed through the axle towards the wheel end Page 17 of 42 Ms CRIs e TEMCO Aeris Installation and Service Manual PASS THROUGH CAP RUBBER PASS THROUGH O RING FITTING BODY MASKING TAPE A ROUTE TUBING TOWARDS SPINDLE END _ c Figure 12 e Push the cap O ring and pass through fitting back approximately 5 in preparation for threading the airline though the axle e Route the air line through the axle towards the spindle end on each of the outer tapped holes until airline is protr
5. SmartSense for SmartSense installation Recommended to route and tie wrap airlines coming off the axles to existing wiring or tubing going towards the location where the control box is mounted making sure airlines won t be rubbing against any sharp edges that may damage airlines Center vent lines should be tied up under trailer so that duck bill vent is vertical and so that duck bill won t risk being under water if trailer is parked in a loading bay that may hold water Make sure to tie wrap center vent line to the trailer in an area that isn t a moving component which could risk it being pulled on Vent line may be wrapped around axle if needed just make sure duck bill is facing vertically and then tie wrap vent line to fitting coming of the axle to hold it in place CENTER VENT LINES TIED UP TO TRAILER DUCK BILL NEEDS TO BE POINTING UP ___ Figure 20 Page 25 of 42 Ms ECLCRiIS Aeris Installation and Service Manual ev stemco INSERTED TEE FITTING RECEIVES AIR SUPPLY FROM OUTLET ON CONTROL BOX INSERT TEE FITTINGS TIE WRAP FITTING TO CENTER VENT LINE ON BOTH AXLES REAR AXLE FITTINGS FRONT AXLE FITTINGS Figure 21 Standard system install See Figure 23 for SmartSense Installation Page 26 of 42 MSA CRIS Aeris Installation and Service Manual CONTROL BOX MOUNTING BRACKET AIR SUPPLY FILTER OUTLET AIR SUPPLY AIR SUPPLY VALVE AIR LINE FROM AXLES
6. airline to attach to your tee fittings See Figure 16 Page 21 of 42 Ms ACRIiIS Aeris Installation and Service Manual PAST VENT LINE Figure 16 e Repeat same procedures on remaining ends of all spindles Make sure when feeding airline tubing into axle it heads towards the correct spindle end IMPORTANT Make sure to leave some slack in end of line when cutting for the hubcap airline fitting If hubcap needs to be removed you will need enough slack to unbolt the hubcap and be able to remove the airline from the air fitting Figure 17 Page 22 of 42 Ms CRIS Aeris Installation and Service Manual e Depending on your hubcap type Remove plug on hubcap and fill with oil to appropriate levels for safe operation Allow oil levels to stabilize and add oil until at correct levels for each hubcap IMPORTANT Make sure oil levels in each hubcap are at the recommended levels for safe operation before using the trailer Fill and allow oil to settle then check oil levels again Add as needed to reach the recommended levels Control Box Installation e Install control box mounting bracket with hardware provided Mounting bracket can be mounted flush against the back of bracket flush against top of bracket to a cross member using top mounting holes or welded to the frame If welding weld the bracket to the frame before attaching the control box to the bracket Choose to best option for your application and a location that protects th
7. clean towel to prevent contamination Page 10 of 42 MS AACRIS Aeris Installation and Service Manual Drill Fixture Suggested Ox TPS xf STEEL PLATE WELDED ON 257 T 910 5H6 18UNC WP 630 Sap 1 Drill fixture Drill fixture for aligning holes on axle 2 Drill bushing lock screw 3 Drill bushings Type SF 3 Sizes 5 16 7 16 and 9 16 Figure 3 Figure 4 Determine Axle Requirements e Axle with nothing installed Start at Drill and Tap Holes e Axles with pre drilled holes but no hardware installed Start at Axle Hose Installation e Axle with Other tire inflation system remove airlines and fittings Start at Axle Hose Installation Drill and Tap Holes e Clean off axle for drilling holes for air fittings e Review the sketch of how drill fixture is made See Figure 3 amp 4 e Drill holes using the drill fixture Figure 4 to facilitate drilling and tapping of holes for the three air fittings Use a level to align the fixture and a c clamp to hold fixture in place figure 5 Use lubricant for drilling and tapping the holes Page 11 of 42 Ms CRIS Aeris Installation and Service Manual Use either an angle drill or standard drill where room permits With drill fixture is in place Figure 5 insert the 5 16 drill bushing in fixture and drill a pilot hole using a 5 16 drill bit Next insert the 7 16 bushing and drill the hole using a 7 16 drill bit Nex
8. lubricant can be applied to the rubber to help aid in installing axle plug e Using a tubing cutter squares the end of the airline coming out of the axle after removing the masking tape Leave 5 6 of tubing sticking out of the spindle for easier installation of the Aeris hubcap See Figure 14 Page 19 of 42 Ms CRIS e TEMCO Aeris Installation and Service Manual AXLE PLUG a CONVOLUTE 1 r AXLE PLUG 07830 0088 AXLE PLUG INSTALLATION TOOL 01551 8300 TUBING THROUGH SLOT OF INSTALLATION TOOL Figure 14 Aeris Hubcap Assembly Installation e Place the hubcap gasket over the tubing before inserting it into push lock fitting on hubcap If you are installing a grease application hubcap make sure to follow recommended manufacturing guidelines for putting grease in bearings before you install the hubcap IMPORTANT Make sure grease is applied before installing grease hubcap if hubcap is a grease application e Install the tubing into the push lock fitting on the Aeris hubcap Push firmly on to ensure the tubing is fully seated Now push the hubcap and excess airline back into the axle spindle until the flange of the hubcap is flush with the hub As the tubing is being pushed back into the axle make sure it doesn t kink or bend e Align hubcap gasket with bolt holes on hubcap and install bolts Install all bolts and snug down until hubcap is seated against the hub When all bolts are snug use a torque
9. port stem and the nut at the same time using only your fingers Do not use any type of valve stem extensions See Figure 24 and 26 e f installing on Super Single wheel only one hose is required See Figure 25 HOSE ADAPTER FITTINGS 7 O SINGLE HOSE Wide base single tire hose to hubcap connection Figure 24 Figure 25 Dual tire hose to hubcap connection IMPORTANT Make sure the hose s are not touching the tire rim Contact between the hose and the rim could damage the rim IMPORTANT Make sure the tire hose s are not stretched so tightly that it puts a strain on the valve stem or the hubcap fittings Clock wheels if hoses are not aligned with the valve stems Page 30 of 42 MS AXCRIiIiSsS Aeris Installation and Service Manual OUTER VALVE STEM INNER VALVE STEM 180 FITTING INNER WHEEL OUTER woe SEE INSTRUCTIONS FOR PROPER TIGHTENING OF HOSE FITTINGS Figure 26 Light Kit and Wiring Installation e Once the control box is mounted and the airlines are connected to the controller the electrical wiring and light kit can be installed Improper wiring or operation of Aeris system can lead to the driver not being aware the tire inflation system is malfunctioning e This section gives the basic instructions on wiring the Aeris system and routing the electrical wiring from the power source to the control box and light Hardware kit is shown below with items needed to install wiring and light See Figure 27 P
10. x7 45 All holes will be drilled and tapped off center line of axle facing 45 degress forward Figure 8 Page 14 of 42 Ms SCRiIisS Ss TE M C O Aeris Installation and Service Manual Dill amp Tap for 1 4 18 NPT 4 Inlet hole must be 1 5 away from the Chamber Braket Weld location Figure 9 Component Installation Instructions e Wheels on each wheel end dual tires must have the valve stems clocked approximately 180 apart for installation of airlines to Aeris hubcap and valve stems on tires Clocking should be done prior to installing Aeris system See Figure 10 Clocking Wheels e Clocking dual wheels is important Proper clocking allows the inner and outer valve stems to align with the hose attachment fittings on the Aeris hubcap Wheels with 2 hand holes can be clocked so the valve stems are exactly 180 apart but the valve stems on 5 hand holes cannot be clocked exactly 180 apart It may be necessary to remove the outer tire and rotate it to clock wheels properly Page 15 of 42 Aeris Installation and Service Manual INSIDE WHEEL VALVE STEM OUTSIDE WHEEL VALVE STEM Figure 10 CLOCK INSIDE amp OUTSIDE VALVE STEMS APPROXIMATELY 180 APART MSA CRIS 5S TEMCO IMPORTANT Cut tubing with a tubing cutter approved for the use on DOT air tubing Knives pliers shears and other common tools can kink the tubing or not cut it squarely Poor executed tubing cuts can result in air leaks
11. 615715368 Ms CRIS Aeris Installation and Service Manual STEMCO Aeris Installation Manual Part Number 01 571 8300 Revision 09 23 2014 Rev D Aeris by STEMCO an advanced automatic tire inflation system based on patented rotary sealing technology and precision electronic airflow detection The system is designed to keep commercial trailer tires properly inflated using air pressure from the trailer s air system The rotary seal in an automatic tire inflation system is a critical component it prevents the higher pressures needed to inflate commercial tires typically 100 psi from leaking into the wheel end which can handle no more than 6 psi Excess pressure can cause the wheel end seal to fail prematurely causing lubricants to exit the hub thus leaving moving parts susceptible to wear and seizure a dangerous scenario The rotary seal employed in Aeris by STEMCO differs dramatically from currently available systems and is targeted to increase the reliability and durability of these components substantially In addition to the high reliability and durability of the patented sealing system Aeris by STEMCO also includes several one way pressure relief valves per axle to ensure that the wheel end is never pressurized Aeris by STEMCO also includes a high resolution electronic flow detection technology capable of informing the driver whether the system is making a minor adjustment to tire pressure or if a major leak is present
12. An additional safety feature is a pressure protection valve to protect the integrity of the air brake system in the case of a major and continuous air leak such as a blow out or other catastrophic tire failure Aeris by STEMCO represents a leap forward in automatic tire inflation technology STEMCO starts with an unwavering commitment to increase the safety of our roadways by protecting the wheel end from damaging air pressure and then added several additional safeguards and features Aeris augments our BatRF tire pressure monitoring systems to complete our suite of tire pressure management solutions Page 1 of 42 Ms ERIS Aeris Installation and Service Manual ev stemeco CONTROL BOX AND INDICATOR LIGHT General View of Aeris Components Installed Refer to this installation guide on how to install the Aeris system on trailers Page 2 of 42 Ms CRIS Aeris Installation and Service Manual Table of Contents General INTON IMATION aeeiiaii neea ED EA aati 4 POUT CANS ManUn sanna E E a 4 Explanation ol Sianal Ward sxsssicccavsoseesevanssasasscnsavstesossyacnaneessuessausensasuenss TEEN ao 4 important Safety NotiCESssssarireccsssnisaceua rendenin eA 4 General Service PON MIAL ION saccesacsasuacesssabectsncxassuevdeevevssuassassasiaconewivaetseevanvicntuscepsprateieusevtrerentenses 5 General Service Installation NOUC secccssconsncvascsvvsiswevespeuvevesacepveniensansesnsaveredeaestovsenssstanseiseswennenns 5 Syste M OV CCW oraniensis ndn
13. PRESSURE PROTECTION WIRECABLE ALEE GLAND AIR TANK PETCOCK VALVE Figure 22 Standard system install See Figure 23 for SmartSense Installation Air Lines to Compressed Air Tank IMPORTANT Open petcock valve on compressed air tank to release air pressure from tank Once compressed air is drained from the tank close the petcock valve e Remove large 3 8 Plug from side of compressed air tank e Install the 3 8 NPT M x 1 4 NPT F bushing e Install the 1 4 nipple e Install Inlet side of the Pressure Protection Valve on nipple e Install the 90 swivel elbow 1 4 NPT M X 1 4 tube DOT fitting to outlet side of PPV e Runa piece of 1 4 tubing from the 90 swivel elbow to the Inlet side of the control box fitting e Make sure the mini ball valve on the inlet side of the control box is in the open position See Figure 22a item 9 Page 27 of 42 CO a MNS oo Ms CRIs Aeris Installation and Service Manual FRONT OF TRAILER Figure 22a Standard System Air Line Connections ltem Description Air tank Trailer Air Tank Outlet Air Supply of Control Box Attach air lines from Aeris hubcap to Outlet side of control box Inlet Air Supply of Control Box Attach air lines from PPV to Inlet side of control box Pressure Protection Valve Required 70 psi minimum closing pressure Air Supply From Tractor Air supply hooked to air tank coming from the tractor compressor Aeris
14. age 31 of 42 MAERIS Aeris Installation and Service Manual i ee IN Aa A GEU TN N Aeris Standard Kit Aeris SmartSense Kit Item Qty 1 Wire Extension for light 1 1 Wire Extension for light 2 10 X 1 1 4 Self Tap screw 2 7 10X 11 4 Self Tap screw 3 P Clamps 3 5 P Clamps 4 Wire Ring Terminal 4 3 Wire Ring Terminal 5 Wire Butt Splice 5 1 Wire Butt Splice 6 Light Pigtail 6 7 Driver Warning Light 7 1 SmartSense Driver Warning Light 8 Spacer 8 9 25 6 Tie wraps 9 25 6 Tie wraps Figure 27 Description of Parts Available in Light Kits Item Description 1 Wire Extension for light Used to connect light to light and 7 pin power box 2 10 X 11 4 Self Tap screw Used to attach light and P clamps to trailer 3 P Clamps Used to clamp down wire from light to trailer and to 7 pin power box 4 Wire Ring Terminal Connectors for end of wires to 7 pin power box 5 Wire Butt Splice Used to connect light black wire to yellow wire from controller box 6 Light Pigtail Used to connect light to wire extension to 7 pin power box 7 Light Aeris signal indicator lamp and or SmartSense signal indicator lamp 8 Spacer Used for mounting lamp1 1 9 6 Tie wraps Used to secure wiring and airlines to trailer components Page 32 of 42 MA CRIS Aeris Installation and Service Manual oe eee e Run the 3 wire cable down through the front of the trailer in conduit or space provided by the trailer manufacturer Make sure
15. ank pressure above the target tire pressure prevents proper operation of the inflation system System Features Tire pressure is continuously monitored and adjusted automatically to the target tire pressure Adjustable air pressure regulator is used for setting desired tire pressure target An indicator light will illuminate when air is flowing to the tires Does not pressurize axle tube prevent contamination of seals Rotary seal air leakage will not enter the wheel end preventing oil contamination on the hubcap Each wheel end has dual venting paths to prevent wheel end pressurization Checks tire pressure constantly Integrated check valves in the hoses isolate tires from system if a tire is damaged or leaking Tire pressure check ports are integrated into each hose eliminating the need to remove the hose to check the tire pressure An air filter is provided on the inlet airline to prevent particulates from clogging the system Aeris Specifications Tire pressure setting range 70 120 psi Pressure check interval Continuously supplies air to tires System power requirements at 12VDC lt 12W Minimum power voltage requirement to operate 9 VDC Indicator light current range 50 mA to 600 mA Tire inflation capacity per tire 10 psi in 2 3 minutes The indicator light provides the following system information e No light System is good e Power up Light blinks three times e No pressure Long flash followed by 2 blinks repeating
16. chet and Sockets 1 2 9 16 and 11 16 2 Phillips Screwdriver Bit for Drill Cutting and Tapping Fluid 10 Adjustable Wrench Crescent Aeris Installation Trailer Preparation WARNING Before starting any work on trailer park trailer on a level surface Chock all wheels in front and back of each wheel to prevent the trailer from moving Support the trailer with safety jack stands Do not work under vehicle supported by jack stands only Jacks can slip and fall over Serious personal injury or damage to components can result See Figure 1 WARNING To prevent serious eye injury always wear approved safety glasses when performing trailer maintenance and service Page 8 of 42 Ms ACRISsS Ss TEMCO Aeris Installation and Service Manual Figure 1 e Park trailer on level surface e Set trailer parking brake e Chock each trailer wheel e Place jack stands under trailer e Bleed braking system of compressed air Axle Preparation Drain Oil e Place drain pan under hubcap for oil e Remove bolts from all hubcaps and allow oil to drain from each wheel end Drain Pan ow i Part 102 5001 Drain oil into pan from each wheel Page 9 of 42 Ms CRIS Aeris Installation and Service Manual Welch Plug Removal e Remove welch plugs Drill a small hole off center in welch plug Hole should be smaller than plug removal spear on the end of slide hammer Using a slide hammer fitted with a welch plug removal spear to remo
17. control box looks like the one shown in Figure 32 the above instructions may be disregarded since these steps are now done at the time of manufacture sv 9S TEMCO High Performance Automatic Tire Inflation System JIA S Factory installed wiring harness eliminates field wiring steps 1 Simply plug in the factory installed wiring harness 1 into the pre molded cable end furnished with the kit 2 Figure 1 Figure 32 e Take the light and using the pigtail provided place the ring terminals of the pigtail onto the 2 posts on the back of the light White pigtails on terminal Black pigtail on terminal Tighten two nuts onto ring terminals e Now on the other end of the pigtail remove the 2 plugs in the ends of the connectors and plug in the wire extension Make sure connectors snap in place fully White wire to White pigtail Black wire to Black pigtail e Mount light in front corner of or side of trailer Mount light in location where driver can see it in driver s side view mirror e Mount indicator light to trailer using the self tapping screw provided Make sure to tuck wires inside back of light and where wires come out of slots provided to keep from pinching wire when mounted e Secure wire to trailer using p clamps Make sure wiring is not hanging down to catch on anything IMPORTANT Make sure that as you are installing the p clamps you run the wire with a drip loop in the bot
18. d is maintained in air lines and tires at the targeted pressure If a tire is leaking or there is a leak in the lines the indicator light may illuminate and stay on If the indicator light stays on for more than 10 minutes the system is attempting to inflate the tire or trying to correct for the airline loss to the targeted air pressure If this happens the operator should stop and check the tires manually to determine if it s safe to continue to operate the vehicle Operator should seek service at the next available opportunity Remaining tires are protected from pressure loss by check valves integrated into each tire hose System Components List e Hubcaps e Spindle plug driver and plugs e Airlines and fittings e Light indicator and electrical wiring e Control box with regulator and filter e Control box mounting bracket e Flexible wiring conduit Hardware kit Page 7 of 42 Ms CRIs Aeris Installation and Service Manual Recommended Tool List 1 2 Drill Drill Soeed Recommendations Drill Speed 7 16 drill 262 rom to 786 rom Drill Speed 5 16 drill 367 rom to 1100 rpm Drill Bushings Type SF 5 16 7 16 and 9 16 Drill Bits 5 16 and 7 16 A variable speed drive electric drill is recommended 1 4 18 NPT Tap L1 NPT Plug Gauge Medium to Heavy Duty Extension Cord Wire Strippers Wire Crimper Combination Wrenches 1 2 9 16 and 11 16 Hammer Drill Fixture See page 12 Rat
19. drill for tapping The use of a drill to tap holes can lead to threads being too deep or breaking the tap WARNING When drilling the 7 16 hole be careful as the drill bit breaks through the inside of the axle The drill bit can hang up causing the drill to twist in your hands When breaking through the inside of the axle apply less pressure and drill at a slower speed Page 12 of 42 Aeris Installation and Service Manual DRILL amp TAP AIRLINE HOLES BASED ON CHART BELOW HOLES ARE BASED ON MANUFACTURERS RECOMENDATIONS CENTER OF AXLE ect 3 HOLES IN AXLE FOR AIR FITINGS 1 DRILL PILOT HOLE 5 16 2 DRILL 7 16 v TOP WALL ONLY 3 TAP HOLES USING 1 4 18 NPT Note Before drilling any holes in axle make sure they will not interfere with any suspension components or brake components Contact STEMCO for technical assistance at 903 758 9981 in U S A Figure 5 Torpedo Level C Clamp Drilling Fixture Axle Manufacturer INTRAAX TRIAXLE See Figure 7 See Figure 7 SAFHolland See Figure See Figure8 AXN See Figure7 See Figure7 Meritor See Figure7 See Figure7 Page 13 of 42 Aeris Installation and Service Manual _ 3 Holes Drilled in Windows Axle Wrap Approved drilling area 1 2 minimum from window edge Vent Hole Do Not Drill in This Area Figure 6 Locate Holes in Top of Axle 11 5 7 e 7 11 5 Figure 6a 11 5 11 5
20. e Low volume flow Constantly on e High volume flow Blinking constantly Page 6 of 42 Ms CRIS Ss TE M C O Aeris Installation and Service Manual System Operation How System Works The Aeris tire inflation system is designed to continuously supply filtered regulated compressed air to each tire on the trailer There is no operation required of the driver for the system to function normally The only requirement of the driver is to verify the indicator lamp is functioning and to monitor the system periodically The Aeris system is preset to maintain a specific tire pressure in each tire The pressure in the trailer s air tank must be maintained above the targeted pressure to allow the controller to continuously supply and maintain the preset tire pressure to all tires IMPORTANT For Aeris controller to operate properly the air tank pressure must be greater than the tire pressure target The controller cannot supply tire pressure above the air tank pressure When the system is operating properly the air tank will supply pressurized air to the Aeris controller The controller will supply regulated compressed air to the airlines going to each tire If a tire is low air from the trailer air tank will inflate the tire until the targeted tire pressure is achieved Regulated air flowing from the controller to the airlines and tires may cause the indicator light to remain on until the target pressure is reached Constant pressure remains an
21. e control box from rocks debris etc as much as possible If trailer has a slider frame make sure bracket is mounted on cross member inside the slider frame box e Once mounting bracket is in place install the control box to the bracket using hardware provided e Mount the control box with the door facing the backend of the trailer if possible This will help protect it from road debris If this is not possible mount the control box in a location that allows access to the door but is as free from as many hazards as possible Do not mount control box near tires Control box should be mounted as high under the trailer as possible to keep debris from the road from hitting it and water from getting inside box if trailer is backed into loading dock that may be holding water See Figure 18 19 TOP MOUNTING HOLES 5 Q 1 CLEARANCE HOLES FOR CONTROL BOX POST 2 MOUNTING HOLES FOR CONTROL BOX TO BRACKET 3 MOUNTING HOLES FOR BRACKET TO TRAILER CROSS BEAM TOP OR BACK HOLES MAKE SURE TO LEAVE ROOM FOR CLEARANCE OF HARDWARE WHEREVER BRACKET IS MOUNTED IF MOUNTING FLUSH AGAINST USING THE BACK HOLES OF BRACKET IT WILL BE NECESSARY TO DRILL HOLES THROUGH CROSS MEMBER FOR STUD WASHER AND NUT ON BACK OF MOUNTING BRACKET WHEN CONTROL BOX IS MOUNTED TO MOUNTING BRACKET Figure 18 Page 23 of 42 Ms CRIS e TEMCO Aeris Installation and Service Manual e The control box has several mounting options In all mounting options the 5 16 sealing
22. e to snag on anything as trailer is moving Repeat this step on all axles where Aeris is being installed Page 18 of 42 Ms CRIs Aeris Installation and Service Manual TIE WRAP AIR LINE T FITTING FROM HUBCAPS TO CENTER VENT LINE AFTER INSTALLED LEAVE ABOUT 6 8 OF HOSE STICKING OUTFOR EASIER INSTALLATION AIR LINE TUBING TO CENTER NUT SPLIT LOOM TUBING GROMMET s FITTING BODY AIR LINE FROM HUBCAP TO CENTER OF AXLE IS CUT AFTER THE HUBCAP IS INSTALLED AND THE FITTING ON AXLE HAS BEEN TIGHTENED CUT HOSE LONG ENOUGH TO GO TO CENTER OF AXLE TIE WRAP CENTER VENT LINE AND AIR LINE FROM HUBCAP TO FITTING OF CENTER VENT LINE Figure 13 Axle Plug Installation e Apply wheel end lubricant Oil or Grease to inner diameter hexagonal surface and outer diameter of axle plug e Install the axle plug using the axle plug installation tool The tubing passes through the center of the axle plug which is then inserted into the hole on the installation tool Align the axle plug with the axle spindle and push leading edge of axle plug into spindle bore e Now place the face of the installation tool against the axle plug and using a hammer gently hit the handle of the installation tool and seat the axle plug flush with the end of the spindle end Be careful to drive the axle plug in as straight and even as possible to keep plug from being cocked in bore Repeat this step on remaining axle wheel ends Small amount of wheel end
23. ector terminal and place both the white wires from the 3 wire cable and the light on the post Replace nut and tighten down Remove the nut from Pin 7 on the 7 pin connector and connect the brown wire from the 3 wire cable to the post This will be the center pin and will carry the power on systems that support ABS a Figure 33 Page 36 of 42 MSA CRIS Aeris Installation and Service Manual Next tuck all the wires inside the 7 pin terminal box and install the cover back on the box Make sure you don t trap any wires between the cover and the box that could cause the wire to short Use tie wraps to attach 3 wire cable and wire cable from the light indicator to the airlines leading out of the 7 pin connector box See Figure 34 IMPORTANT Make sure you leave enough slack in the wires in the connector box to be able to remove the cover and work on the wiring without pulling any of the wiring lose from connectors when removing the cover of the box Esch Sl Es r 2 xen in N nOD UN ER ONE OR MORE He fg E FOLI WING PATE a Fo 18 58 y 40 H 8 qf 6 652 or UTI TR ILER MFG COJ y Lon 6 gt 5 w R G Figure 34 Decal Location Place decals on front of trailer by the indicator light and on the inside and outside of the control box cover See Figure 34 Page 37 of 42 Ms CRIS Aeris Installation and Service Manual DECAL LOCATIONS FOR AERIS SYSTEM CONTROL BOX DIAGRAM PART NUBMER
24. g dust from brakes when cleaning around any brake components Dust from brake pads and or parts are a possible cancer and lung disease hazard General Service Information Before starting any work or installation read understand and comply with the following Read all instructions and procedures Company s service maintenance installation and troubleshooting procedures Manufacturer s vehicle safety instructions when working on the vehicle Manufacturer s vehicle instructions not detailed in this service manual Follow all local safety regulations and best safety practices when installing General Service Installation Notes Work must be performed by trained personnel Use all recommended tools required to help avoid personal injury and damage to components Be aware of potential power release of tensioned springs on brake chamber or the brake return springs The release of tension can cause injury After installation perform operational checks and test the trailer to make sure the brakes are functioning properly before releasing back into service Page 5 of 42 Ms CRIS Aeris Installation and Service Manual System Overview The Aeris tire inflation system is designed to automatically inflate tires that are below the target pressure setting The system uses air from the trailer s compressed air tank The compressed air tank pressure setting must be higher than the targeted tire pressure setting Failure to have the air t
25. hen the brake system has not received enough air to open the PPV valve yet Wait for the airbrake tank to fill or check glad hands are connected to the tractor e If the light stays on solid or blinks consistently in timing then the system is taking air If no hissing is heard coming out of the air connections then the tires are low and simply taking air If hissing is coming from an air connection fix the leak e ifthe light goes out after the first 3 blinks then all is ok and tires are aired up WARRANTY INFORMATION All warranty returns may be sent to STEMCO 300 Industrial Blvd Longview TX 75691 Attn Warranty Dept C STEMCO A Higher Standard of Performance Stemco USA Stemco Canada TS 16949 P O Box 1989 5650 Timberlea Blvd Unit B STEMCO BAT RF and AirBAT are all registered Longview TX 75606 1989 Mississauga ON L4W 4M6 trademarks of STEMCO LP 2012 P N 015718300 903 758 9981 1800 527 8492 905 206 9922 877 232 9111 FAX 1 800 874 4297 FAX 877 244 4555 www stemco com Page 42 of 42
26. ina a EEEN EEE E 6 PGT IS OV EG N ee E E 6 EEA E T CS E A D A ANE A E A A T N 6 Aere DECC ON oeoc ENE AEEA AN 6 WEM Cl O a A A N 7 How votem VOLK oniani a aN E E S 7 Vte COM OG 1G INES asiaansa aii a 7 Recommended TOOL Li trnrinonininan a a aaa a ET aain AaS 8 Aeris Installaatio goteciccamnynecvasancesencaheseunanisseestessnsseaunuis sy cases ss banenrscunnenesica a aain 8 AMEE PRED Al e a A E AAE A E ENEA E N sarees sacssesseane aeons A 8 Ae Pron cl asn A 9 Dror Ooae O E cavaa ocasuseuaconsesonerssenronscsaces 9 Remove VVClCIicP ING cans cavcinasnsh exacenedounvanaesvocsdventeasnssseveies a naanakan aS 9 Drill Fixture HOW to Make and USe u cccccscescssssssssscscsssescsscessescsessesesencceescecesesssessees 10 Drill amp Tap Holes in Ct enc aucavaasoacesaeeyowensesasoamsessusess sanausdawseceassuessasaanausscsansvancaneensateancoeess 11 CVG CIS WIEC ararasan E E O 15 Axle Hose InstallatiONn sssssssessesseseeseeoseoseseeseusesoseoseseeseeosesseseeseseeseeeseeseesessessusseeseeseseeeseeseeseeeessee 17 Split Loom Tubing Protection InstallatiON es eseesessessesseesessuseeseuseussuseusessessesosuseseeeseseeuseseeeesseeao 18 Center Vent Line InstallatiOn e sesessesssssesssssesossoussusossossoesessossossossosoossossoscossesosssossesossssssossessesessss 18 Axle Plug Installatio Vawosssncasaesuavansseadsaeenseasessahsangsuuetsasenssadsaseausasos vie a aa 19 Aeris Hubcap Assembly InstallatiOn ssssssessossoeoseoseosecssoseoseoseseeseeo
27. ith tee fittings Instead each section of tubing runs in a continuous length from each wheel end to the corresponding outlet port on the bottom of the Control Box The manifold inside the Control Box is labeled with the wheel end designation above the outlet port See Figure 23 SmartSense for a detailed diagram Page 24 of 42 Ms CRIS e TEMCO Aeris Installation and Service Manual After the hubcap is tightened down push the rubber grommet on the air line down against the body of the fitting and tighten the nut Take the tubing from each spindle end and insert it into the air line tee fitting over the center of the axle It may be necessary to trim off excess tubing going to the center of the axle Repeat this step on all axles Insert end of tubing into tee fitting on rear axle and run tubing to the front axle tee fitting and insert into front axle tee fitting Make sure to leave enough airline tubing from rear axle to the front axle for axles that move Independent of each other to distribute load weight Use tie wraps to attach tubing to stationary areas to keep tubing from dragging or getting hooked on anything while truck is moving On the front axle you will need to insert another tee fitting into the airline to connect the air supply to outlet side on the control box All airlines connected to the hubcap from each axle will be hooked up to the outlet side of the control box mounted under the trailer See Figure 20 21 and 22 See Figure 23
28. nal injury vehicle damage property damage unsafe operating conditions or void the manufacturer s warranty e Carefully read understand and follow all safety related information in this manual WARNING DO NOT modify or rework parts Use only STEMCO Aeris authorized replacement parts Use of substitute modified or replacement parts not authorized by STEMCO may not meet STEMCO s specifications This may cause the part to fail which could result in loss of vehicle control and possible personal injury or property damage Do not modify parts without STEMCO s authorized written permission Page 4 of 42 Ms CRIS Ss TE M C O Aeris Installation and Service Manual WARNING Always wear proper PPE when installing and performing maintenance repair servicing equipment or cleaning tractor or trailer components WARNING Solvent cleaners can be flammable poisonous and can burns or serious injury To help avoid serious personal injury carefully follow the manufacturer s product instructions and guidelines Please follow the procedures below Wear proper eye protection Wear proper protective clothing to protect your skin Always work in well ventilated area Do NOT use gasoline or solvents that contain gasoline Gasoline can explode and cause serious personal injury or death Hot tank solutions or alkaline solutions must be used correctly Follow the manufacturer s product instructions and guidelines WARNING Avoid creatin
29. ng and the LCD will read 0 if low flow exists the light on that channel will stay on constantly and if high flow exists the light will blink constantly e f the indicator light remains on and the system continues attempting to inflate one or more tires to the proper pressure but can t due to the inability to maintain adequate pressure the system has a leak and must be repaired e Verify the oil level in each wheel end is at the correct level Maintenance Check Tire Pressure e Although the Aeris tire inflation system is designed to detect and fill a tire that s leaking during vehicle operation STEMCO recommends you inspect the tires for normal wear and damage at regular intervals and check the tire pressure as follows e Remove the metal cap from the check port that is provided on each hose See Figure 36 Page 39 of 42 Ms CRIS e TEMCO Aeris Installation and Service Manual Check Port Figure 36 Check pressure going to each tire using a pressure gauge e Ifthe tire pressure is lower than expected Replace fill cap and hand tighten e If the tire pressure is lower than expected e Verify that the shut off valve is in open position e Check all air connections with soapy water solution If bubbles can be seen tighten fittings and check again with soapy water solution e f pressure is too high release some pressure from the tire dropping the tire pressure below the desired target pressure e The Aeris
30. seoseseeseeseeoseseeseeseeosesseseeseesese 20 Control Box Wis Call AIO Morsin ruasasaircene nnise inari 23 Connecting Airlines to Control BOX e sesssssssesseseessssossossossossoscosooscososssoscesssosososceoeoeosososssososoess 24 Air Lines to Compressed Air TanK ssssesssssssossossosoososssossosssssoseossosoesoessossessesossoessesessssese 27 WIS FIO eM O a T E ET 29 Leht Kitand Wiring nstallati srcani inana ENRE a aaa aaa 31 Decal EOC Oa A E E E E E 38 System Installation Check esseeseesossossescesosesoscosoososesosoosoosossoseoseooscssossoseoseoescseoseosesososeoseosesseseeoseosesseses 38 AVA CON ANN CC nean O E EE A 39 checke Pre SUN E E canearsessessancanene 39 Roe Or eN a AAE O E 40 Troubleshooting CONT OLB OK errea ET EE E EAEE 41 Page 3 of 42 Ms CRIS Aeris Installation and Service Manual General Information About This Manual This manual is provided to support the STEMCO Aeris tire inflation system The manual provides the following information needed to install service and troubleshoot the Aeris system Explanation of Signal Words Please pay attention to special symbols used through this manual to convey important information Hazard signal words such as DANGER WARNING CAUTION or NOTICE are used throughout this manual Information accented by these words indicates a point of emphasis and importance The following definitions comply with ANSI 2535 4 and indicate the use of signal words as they appear within
31. system will automatically inflate the tire to correct setting e Each tire should be checked for correct air pressure a minimum of once every 3 months Regulator Setting It s recommended that you check the regulator pressure once every 3 months to verify the regulator is still set at the desired pressure setting To set the regulator pressure follow the steps below e Open the cover to the control box e Remove the metal cap on the check port fitting on the regulator e Check the pressure with an accurate gauge such as a master gauge Page 40 of 42 MSA CRIS Aeris Installation and Service Manual e Ifthe pressure is correct replace metal cap and close the lid e Ifthe pressure is above or below the desired setting adjust the pressure using the adjustment knob See Figure 36 e Ifthe pressure is low pull up on the regulator s knob to unlock Turn the knob clockwise to increase the pressure Allow the pressure to stabilize then check the pressure 2 3 times to verify correct pressure If the pressure is correct push the knob back down to lock in place and replace the metal cap e Ifthe pressure is high turn the knob counter clockwise to decrease the pressure Allow the system to stabilize and check the pressure 2 3 times to verify correct pressure Continue to decrease or increase the regulator until the desired pressure is achieved Pressure Adjustment Knob fara Pressure Check Port Drip Loop Pai
32. t insert the 9 16 bushing in fixture and using a 1 4 18 NPT tap the hole Repeat procedure on all 3 holes in each trailer axle IMPORTANT For some axle configurations you may be required to remove the slack adjuster and or the air brake chamber in order to access the drill locations specified by the axle manufacturer Tap 14 18 NPT Proper tap depth determination for a tapered pipe thread NPT requires an L1 Plug Gauge which Stemco highly recommends If an L1 gauge is not available an approximation of tap depth can be made by using the actual fitting that will be inserted into the hole Using only hand applied torque the fitting should screw into the hole so that 2 to 3 threads are inside the hole before it becomes too tight to turn This is a trial and error process to get the right depth so use caution to prevent over tapping Once the tap depth is verified mark that depth on the tap wrap tape around it or mark with permanent ink so the tap can be driven to that depth on future holes When finished drilling holes use a cleaning wand connected to high pressure air to blow out shavings from inside of the axle Use safety glasses WARNING The use of a drill fixture is recommended Drilling free hand can create oblong holes Drilling should be done at a drill soeed 7 16 drill 262 rom to 786 rpm or drill soeed 5 16 drill 367 rom to 1100 rpm Keep drill straight when boring holes Tapping should be done by hand only Do not use a
33. the cable stays inside the conduit or track between the tractor and the trailer Failure to do so may cause the wire to be damaged See Figure 30 e Make sure to route the 3 wire cable under the trailer through the same holes that the brake airlines and other electrical lines are running through Make sure to secure the cable every 15 20 inches using the tie wraps provided Any excess cable that is not being used needs to be cut or bundled and tie wrapped to existing cable routings under the trailer See Figure 28 IMPORTANT Make sure to run the 3 wire cable along the same path the airline from the brakes is routed This will insure that you have enough slack in the electrical line to keep it from be damaged by any moving parts on trailer See Figure 29 Figure28 Figure 29 IMPORTANT Do not allow 3 wire cable to rub against a sharp edge of a hole or straight edge of a structural cross member as cable is being routed through the trailer Use tie wraps to secure to existing airlines or electrical lines Page 33 of 42 Ms CRIS BS TEMCO Aeris Installation and Service Manual could be behind plate oS for wire Figure 30 FLOW METER LIGHT CONTROL YELLOW POWER BROWN DRIVER WARNING LAMP BUTT SPLICE LIGHT CONTROL BLACK 7 PIN CONNECTOR ON FRONT OF TRAILER Figure 31 Page 34 of 42 Ms CRIs Ss TEMCO Aeris Installation and Service Manual INSTEAD When your
34. this manual DANGER Indicates immediate hazards which will result in severe personal injury or death WARNING Indicates hazards or unsafe practices which could results in severe personal injury or death CAUTION Indicates a hazardous situation which if not avoided could result in minor or moderate injury NOTICE Indicates hazards or unsafe practices which could result in damage to machine or equipment IMPORTANT An operating procedure practice or condition that is essential to emphasize Safety alert symbol used to indicate a condition exists that may result in personal injury or harm to individuals It must be applied to DANGER WARNING and CAUTION statements which emphasize severity IMPORTANT Please pay special attention to the information supplied in the Explanation of Signal Words section These words are used to help prevent immediate hazards unsafe practices severe personal injury or death and damage to machines or equipment Important Safety Notices e Proper maintenance service and repair are important to the operation and reliability of the trailer suspension system and its components The procedures recommended by STEMCO as described in this manual are methods of performing maintenance inspection repair and service All warnings and cautions should be read carefully to help prevent personal injury and to help assure proper installation methods are used e Improper maintenance service and repair can result in perso
35. tires to the proper pressure but can t due to the inability to maintain adequate pressure the system has a leak and must be repaired e Verify the oil level in each wheel end is at the correct level Page 38 of 42 Ms CRIS Aeris Installation and Service Manual System Installation Check Aeris SmartSense System e After the Aeris system is completely installed but before the trailer is put back into service all air system connections need to be checked for leaks Apply a soapy water solution to all air connections If bubbles appear at any fitting or air connection repair the connection Follow Instructions Below e Make sure the petcock valve on the trailer air tank is closed e Fill the trailer air system and set all tire pressures just below the target pressures e Ensure the mini ball valve on the controller box is in the open position e Verify the trailer is connected to 12 volt power source e Verify the Green light on the circuit board in the control box is blinking If after applying 12 volts you don t see a light blinking disconnect the 12 volt power source and check all wire terminal connections and connections to the 7 pin connector box correct Light will be blinking Red if no pressure exists or flow is passing through the meter e Indicator light on trailer should come on and blink 3 times If insufficient pressure exists in the system LCD will read 2 if all is well the lights will stop blinki
36. tom of cable below the 7 pin connector box This keeps water from running down the cable from the indicator light into the electrical box See Figure 34 e Remove the cover to the trailer 7 pin connector box See Figure 33 Page 35 of 42 l Ms CRIS Aeris Installation and Service Manual i at mee ote Route the wire from the light into the 7 pin connector box Route enough wire into the box to have about 8 of wire sticking out and cut off excess wire Strip about 5 of the wire jacket from the wire using a jacket stripping tool Make sure not to cut jacket so deep you cut into the insulation on the wires Strip off 1 4 of insulation from the black and white wire Route end of the 3 conductor wire into the 7 pin connector box Strip the wire jacket from around the wires back about 6 using a jacket stripping tool Make sure not to cut jacket so deep you cut into the insulation on the wires Next strip 1 4 of insulation from the white brown and yellow wires Crimp a ring terminal on the end of the white wire from the light and crimp a ring terminal on the white wire going to the control box Both white wires coming to the 7 pin connector box should have a ring terminal crimped to them Use a terminal crimping tool Crimp ring terminal to the brown wire Crimp butt splice to the black wire from the light and the yellow wire from the 3 wire cable going to the control box Remove the nut from Pin 1 biggest pin on the 7 pin conn
37. uding approximately 8 out of the spindle If airline hangs up inside the axle you may need to use something to help fish it through the spindle end Make sure the airline doesn t have any kinks in it Split Loom Tubing Protection Installation e Place one of the supplied split loom tubing protection sleeves over the airline tubing of each spindle end to help protect against sharp edges inside the axle Repeat steps 1 4 on remaining axle wheel ends e The air line from the spindle end going to the fitting on the axle fitting can now be cut Make sure to cut the tubing long enough to reach just past the center of the axle The airline will be attached to a tee fitting and then tie wrapped to the center axle vent line See Figure 13 Center Vent Line Installation e Install the push lock fitting 1 4 NPT x 3 8 tubing into the center tapped hole and tighten Insert the supplied 37 X 3 8 nylon tubing with the duck bill into the fitting The vent line should be oriented so the duck bill is pointing up and tie wrap it to frame or hoses of trailer where it s not going to be part of any moving component If this option is not possible the vent line can be routed around the axle Make sure the tubing goes around the axle 1 2 times e Tie wrap and secure the end of the air line with the duck bill to the airline coming out of the axle Make sure the duck bill vent is facing up and there aren t any big loops of airline hanging below the axl
38. ve the welch plug Be careful not to score the inside diameter of the spindle bore e If you do not have a slide hammer you may be able to remove the welch plug by using a chisel and hitting the welch plug off center This should cause the plug to start turning inside the spindle unless there is a shoulder behind the welch plug Once the plug has turned enough to grab it with a pair of pliers and pull until plug comes out e f plug cannot be removed drill a 1 2 hole in the welch plug Make sure as you are drilling the hole you don t score the inside diameter of the spindle bore e Insert a long steel rod into the 1 2 hole until it hits the back side of the welch plug in the opposite spindle Steel rod must be longer than the length of the axle Use a hammer to hit the rod and knock the welch plug out Pull rod out and repeat procedure on the plug with hole with the 1 2 hole in it Repeat procedure for second axle See Figure 2 DRILL HOLE FOR REMOVING WELCH PLUG OFF CENTER THIS WILL HELP IN PULLING WELCH PLUG DRILL HOLE FOR SLIDE HAMMER Drill hole off center for slide hammer or rod Rod running through axle to other welch plug Figure 2 e Inspect the spindle bore for burrs Remove any burrs using straight die grinder with light grade flapper sanding wheel Clean the bore of any grinding debris e Check inside spindle to verify that the axle is hollow which is required for airline passage e Cover bearings and axle nut with
39. washer lock nuts and flat washers must be used The sealing washer is always on the inside of the box 1 Attach the box without the bracket directly to a cross member or frame section using the three 5 16 mounting holes in the bottom of the box Be sure to leave room at the top for the door to open up 2 Use the mounting bracket provided with the Aeris system The bracket can be mounted using the holes on the side of the bracket or the holes in the top flange The control box can then be bolted to either side of the bracket holes are symmetrical 3 The mounting bracket can be welded to the trailer if desired but the frame must have clearance holes of the 5 16 mounting hardware nut and flat washer on the outside of the box The box must be removed from the bracket before welding and the welded area must have some anti corrosion treatment such as cold zinc paint ADDITIONAL MOUNTING OPTION N CROSS MEMBER BEAM METAL BONDED SEALING WASHER aA 4 h USED INSIDE 5 CONTROL BOX ig f f i A fl j EEH gt Lh A J EAR AZ yd e 5 16 18 NYLON 5 16 FLAT WASHER LOCKING NUT BOLTING CONTROL BOX TO CROSS MEMBER 9 16 18 X 1 00 BOLTS MOUNT CONTROL BOX TO CROSS MEMBER BEAM USING TOP OR BACK PLATE HOLES Figure 19 Connecting air lines to control box see Fig 23 for SmartSense installation e SmartSense If you are installing an Aeris SmartSense system the airline tubing sections are not connected together w
40. wrench to finish tightening bolts to correct specification Tighten bolts using a star pattern as shown in figure 16 Torque bolts to 12 16 ft Ibs See Figure 15 and 17 Page 20 of 42 Ms AXCRIS Aeris Installation and Service Manual PUSH LOCK TUBING FITTING HUBCAP BOLTS pu re pi pa AERIS HUBCAP ASSEMBLY PUSH EXCESS TUBING BACK INTO AXLE WHEN BOLTING HUBCAP DOWN CUT AIR LINE GOING TO FITTING WITH TUBING CUTTER LEAVE 5 6 STICKING OUT PAST THE END OF THE SPINDLE PUT GASKET OVER TUBING THEN INSERT TUBING FIRMLY INTO FITTING ON HUBCAP MAKE SURE TUBING IS SEATED FULLY INTO FITTING PUSH EXCESS TUBING BACK INTO AXLE AND OUT OF THE AXLE TUBING FITTING BOLT DOWN HUBCAP TORQUE BOLTS 12 16 FT LBS Figure 15 Pull gently on the air line coming out of the axle until you feel it get tight Now push the pass through fitting body down the air line and tighten it into the axle Next push the rubber O ring and the pass through cap down on the tubing to the fitting Before you tighten the pass through cap push 4 5 of airline back into the axle making sure not to kink the air line This will allow enough slack in the air line should you need to remove the Aeris hubcap later Tighten the pass through cap on the fitting Do not over tighten Using a tubing cutter cut airline coming out of the closed pass through fitting on the axle 5 past the center of the axle vent hole You want to make sure you have enough
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