Owner`s Manual - Link Manufacturing
Contents
1. OWNERS MANUAL 55 DANA MODEL S135 REAR AXLE MODELS LINK MFG PART NO 9 000060 Link Mfg Ltd PROUDLY INSTALLED 223 15th St N E Sioux Center A USA 51250 2120 COMPANY 712 722 4874 Fax 712 722 4876 INSTALLER SIGNATURE QUESTIONS CALL CUSTOMER SERVICE DATE 1 800 222 6283 INSTALLATION INSTRUCTIONS INDEX LO INTRODUCTION 2 0 DRIVER SIDE DISASSEMBLY 3 0 PASSENGER SIDE DISASSEMBLY 4 0 LATERAL CONTROL RODASSEMBLY 5 0 DRIVER SIDE ASSEMBLY 6 0 PASSENGER SIDE ASSEMBLY 7 0 CONTROL SYSTEM 8 0 ELECTRICAL 9 0 FINAL INSPECTION amp OPERATION 10 0 SERVICE amp MAINTENANCE 1 INTRODUCTION IMPORTANT It is important that the entire installation instructions be read thoroughly before proceeding with suspension installation WARNING A correct installation must result in the suspension and axle being loaded within the range specified by axle and suspension manufacturers Please check vehicle specifications and intended usage to insure axle will be within Gross Axle Weight Rating GAWR No alteration of any suspension component is permitted PRODUCT INSTALLER RESPONSIBILITIES Installer is responsible for installing the product in accordance with Link Mfg specifications and installation instructions Installer is responsible for providing proper vehicle components and attachments as well as r2. on for the compressors to operate During difficult starting circum stances i e extremely cold weather it is recommended to turn the compressor switch off until the vehi cle is running so it will not draw current from the battery The compressors are controlled by the pressure switch located in the Air Control Box This switch automatically turns the compressors on when the tank pressure falls below 100 psi and turns them off at 120 psi The Low Pressure Warning Light indicates a severe drop in tank pressure below 60 psi Immediate cor rective action should be taken to determine the cause of air loss Compressor switch should be turned off if Low Pressure Warning Light is on and remains on even after the compressors have run for a normal period of time NOTE The Low Pressure Warning Light could come on briefly when the Dump feature is being used Itis important to release any moisture contained within the air tank daily basis This is done by pull ing on the attached release cable for approximately 5 seconds See Air Control Kit Owners Manual for location of this cable Not releasing the moisture on a regular basis will cause the drain valve to not oper ate properly CHECK AT EVERY VEHICLE SERVICE INTERVAL Check Design Height Check for air leaks around fittings CHECK AFTER THE FIRST 1000 MILES Recheck amp tighten any loose fasteners Check for any loose or worn components CHECK AFTER
3. 3 4 UNC HEX JAM NUT O amp P 15 1475 2402 3 4 UNF HEX JAM NUT O amp P 16 1478 1000 16 UNC HEX NYLOCK NUT GR 26 4 1 4 LOCK WASHER 2 U BOLT 3 4 16 UNF 3 90 X 7 00 LINKAGE VALVE HEIGHT CONTROL 6 50 800 0097 LCR UPPER 800 0098 LCR LOWER BRACKET MOUNT AIRSPRING UPPER HANGER 37 18 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 Ultrakide GMc 4500 5500 4x4 UltraRide TROUBLE SHOOTING GUIDE COMPONENT POSSIBLE PROBLEM CORRECTIVE ACTION Air leaks Remove fitting and apply fresh joint compound Reinstall fitting but Do Not Over tighten Do not use Teflon tape A Improper height A Adjust valve linkage to maintain proper air spring height B Air leakage B Replace air spring Height Control Valve i Inspect valves to insure drive bearing notch 15 i located correctly The driver side valve notch on SUPPLY port side of valve passenger OR side on SUSP port side If not loosen lever Air spring s will not deflate when weight is removed screw but do not remove completely and pull rom the chassis lever loose from drive bearing rotate drive bearing until the drive bearing notch is in the correct position and re secure lever by tighten ing lever screw See Fig 11 3 amp 11 4 for orientation details B Replace valve Shock Absorber Insufficient damping effect Replace
4. EVERY 30 000 MILES Check arm pivot bushings and lateral control rod bushings for wear replace if worn 21 Guideline Driveline Angles After vehicle build is complete the driveline angles must meet the following rules both at unloaded and fully loaded vehicle attitudes Rule 1 The NET OPERATING ANGLE at any individual joint must be at least 1 2 degree and not to exceed 3 degrees The net operating angle at any individual joint on an F Super Duty F250 F350 F450 or F550 must not exceed 4 degrees The preferred maximum angle is 2 degrees The NET OPERATING ANGLE e at any one joint is the combination of the joint angles in both the side view and the plan top view This NET OPERATING ANGLE e equals 2 2 Plan View side View Angle Angle By example using Figure 1 The NET OPERATING ANGLE at JOINT A ea gt 0 5 lt 3 0 or lt 4 0 The NET OPERATING ANGLE at JOINT B eb 2 gt 0 5 angle x angle b lt 3 0 or lt 4 0 The NET OPERATING ANGLE 2 2 gt 05 at JOINT C ec angle x angle c lt 3 0 lt 4 0 Fig 1 BEARING angle x TRANSMISSION pie ras ee eo e PLAN VIEW COUPLING H SHAFT TOP VIEW NTE JOINT C DRIVESHAFT SIDE VIEW angle c 22 Guideline Driveline Angles Continued Rule 2 The combination of NET OPERATING ANGLES throughout
5. frame __ using 6 1 2 x 1 3 4 UNC FLANGE BOLTS 6 1 2 UNC LOCK FLANGE NUTS 4 supplied with kit See Fig 5 1 5 2 See Table 10 1 for appropriate Torque Position the DRIVER SIDE TRAILING ARM on top of the LOWER LATERAL CONTROL BRACKET as shown in Fig 5 3 5 4 Be sure 2 PLASTIC SPACER TUBES As Shown in Fig 5 4 Slide 2 3 4 X 7 UNC FLANGE BOLTS into the 2 rear holes to hold the TRAILING ARM in place See Fig 5 3 5 4 for details Secure The TRAILING ARM loosely to the FRONT HANGER with 2 3 4 X 3 UNC FLANGE BOLTS AND 2 3 4 UNC FLANGE NUTS See Fig 5 2 5 4 for bolt orientation Secure the TRAILING ARM to the LOWER LATERAL CONTROL BRACKET using 2 3 4 X 7 UNF BOLTS AND 2 3 4 UNF TOP LOCK NUTS Tighten these 3 4 UNF fasteners at this time See Table 10 1 for appropriate Torque MOUUNT PARKING BRAKE CABLE RELOCATION BRACKET AS SHOWN Fasten the UPPER AIR SPRING BRACKET and AIR SPRING to the frame using 6 1 2 X 1 3 4 UNC FLANGE BOLTS and 6 1 2 UNC TOP LOCK FLANGE NUTS Bracket will have 2 possible mounting locations depending on cross member fuel tank location Use the location shown by the 7 78 dimension shown in Fig 5 5 Tighten the 3 4 UNC JAM NUT on the lower AIR SPRING STUD that goes through the TRAILING ARM See Table 10 1 for appropriate Torque Torque the 4 3 4 X 3 UNC FRONT TRAILING ARM front pivot bolts See Table 10 1 for appropriate Torque oriented pointin
6. lift to raise the vehicle If using a lift chassis body removal may not be necessary but removal of rear wheels will aid in installation Refer to GM Document 812944 and 827666 If not using lift block the front wheels and apply the emergency brake so the vehicle cannot roll Jack up the rear frame of the truck in order to unload the rear leaf springs or use an overhead hoist may also be advantageous to place jack stands under the rear axle itself This will take some of the weight off the axle and help to keep it from moving during disassembly The stands should not raise the tires off the ground Install the suspension in the listed sequence Install one side of the suspension at a time First install the driver side completely then install the passenger side Removal of the rear wheels if using a lift may aid in installation but it is not necessary Measure amp record the wheelbase and centering dims before beginning installation WHEELBASE DIM 1 g CENTERING DIM CENTERING DIM 2 WHEELBASE DIM 2 2 DRIVER SIDE DISASSEMBLY 1 With weight taken off the rear springs as noted in pre installation checklist remove the rear bolts from the rear leaf spring hanger bracket Remove the front spring hanger bracket DO NOT re use the fasteners that mount the hanger bracket or the leaf spring itself New fasteners are provided and must be used to a
7. shocks Lateral Control Rod A Loose nuts on lateral control rod bolts A Tighten securely B Worn bushings B Replace lateral control rod 20 C4500 CS500 ULTRARIDE OWNERS GUIDELINES The UltraRide suspension needs no lubrication and little maintenance However immediate cor rective action should be taken if a serious malfunction occurs CAUTION maintenance or service 15 to be done on the air system be sure to drain all air from the system Serious injury could occur if components are removed while system is full of air PRODUCT OWNER RESPONSIBILITIES Owner is solely responsible for pre operation inspection periodic inspections maintenance and use of the product as specified in the particular LINK MFG instructions available by product model except as provided in this warranty and for maintenance of other vehicle components Of particular importance is the re torque of fasteners including axle u bolts torque rod bolts and track rod bolts This re torque must be performed within 90 days of the suspension being put in service Owner is responsible for down time expenses cargo damage and all business costs and losses result ing from a warrantable failure The UltraRide Chassis Air Suspension is fully automatic in controlling the height of the chassis No man ual intervention to control air pressure or ride height is needed during the course of operation Compressor Switch must
8. the whole driveline must cancel It is preferred that the NET OPERATING ANGLES at either end of a shaft be within 1 degree of each other However at a minimum the following formulas must be satisfied for sufficient cancellation to occur For a 1 shaft driveline 2 joint lt 3 0 lt 4 0 For a 2 shaft driveline 3 joint as exampled in Figure 1 lt 3 0 lt 4 0 For a 3 shaft driveline 4 joint lt 3 0 lt 4 0 Rule 3 The center bearing mounting bracket surrounding the rubber insulator must be 90 3 degrees to the center bearing In other words no more than 3 degrees of mis alignment can be absorbed by the rubber surrounding the center bearing See Figure 2 Fig 2 No more than 3 degrees of mis alignment allowed A Ensure that u joints are in line to within 2 degrees B Ensure matching alignment arrows between slip yoke and tube shaft NS Observe alignment arrows stamped parts If there are no alignments marks then add them before disassembly to ensure proper phasing alignment of shaft and yoke GUIDELINE DRIVELINE COMPONENT PHASING 23 MINIMUM UNIVERSAL JOINT OPERATING ANGLE A slight angle is required to prevent universal joints from brinelling Therefore a minimum operating angle of degree is required MAXIMUM UNIVERSAL JOINT OPERATING ANGLE Universal joint operating angles can be quite high sometimes as high as 1
9. 2 degrees But to get a vehicle to operate successfully above 3 degrees often requires larger universal joints double cardan or constant velocity joints or restrictions on operating speed A reduction in universal joint life becomes noticeable when they are operated at more than 3 degrees if precautions are not taken That having been stated the F Super Duty series of trucks F250 F350 F450 and F550 can tolerate angles up to 4 degrees However maximum angles of 2 degrees are preferable for all vehicles Two shafts connected with a single cardan joint and turning at a constant speed with no joint angle have no angular acceleration that could cause a vibration When there is an angle between them and the input shaft is turning at a constant speed the driven shaft is forced to continuously accelerate and decelerate twice per revolution creating a vibration If the speed changes are small the vibration is not objectionable The guidelines in this appendix limit driveline angular acceleration to a maximum of 400 radians per second per second This is the requirement for all Ford light trucks SAE specifies 500 Some modified drivelines have been measured at over 11 000 radians per second per second causing driveline failures at very low mileage DRIVELINE ANGLE MEASUREMENT Driveline angle measurements should be made with the vehicle supported by the tires and resting level surface Avoid hoisting a vehicle by the frame since this will d
10. AIR KIT TO AIR SPRINGS AIRLINE 3 amp 4 ADJUSTABLE HEIGHT CONTROL VALVE LINK AGE FROM AIR SUPPLY PORT ON AIR KIT AIRLINE 1 LEVER ARM AIR CONTROL KIT AIR CONTROL SCHEMATIC PILOT SUPPLY PORT SOLENOID VALVE y gt 59 75 A A is 0 N gt 7 4 lt sm 2 Pw 4 95 M N 4 TO AIR CONTROL KIT AIR TANK AIRLINE 2 HEIGHT CONTROL VALVE AIRLINE AIRLINE 2 AIRLINE 5 i ___ 7 AIR SUPPLY TEE AIRLINE 3 amp 4 TO AIR SPRINGS visual issues Under hood and under body wire routings should be clear of sharp edges 3 4 inches minimum and direct sources of heat 4 inches minimum Wiring located in the passenger compartment should be routed away from high temperature areas over the muffler Wiring should not be routed through wheel well areas where it may be dam aged by tire or road debris and it should not be routed over the exhaust system Wiring should not contact the brake lines or fuel lines Disconnect the battery cables before servic ing any electrical components See GM Documents 173237 and 173165 Refer to the GMT560 Best Practices Manual for more information on tying into electrical components CAUTION All wiring should be routed and secured neatly to avoid any functional or 1 Refer to AIR
11. CONTROL KIT OWNERS MANUAL for further details on electrical system installation and parts list 13 9 FINAL INSPECTION amp OPERATION Recheck all fasteners for specified torque Double check all electrical connections and wire routings Remove all jacks and air system up by either using the fill valve on the air tank or by starting the vehicle and switching the compressor switch to ON Note the maximum allowable pressure in the air tank is 120 psi It is recommended to fill the air tank using the supplied schraeder valve so that the compressors are not taxed too much by running for a long period of time Check for proper operation of the height control valves With one end of the valve linkage discon nected rotate the valve arm down 45 air should exhaust from the air springs Rotating the valve arm up 45 should cause the valve to fill the air springs Measure the Design Height of the air springs The height should be as shown in Figure 9 1 measured at the middle of the air spring adjust the design height see Figures 9 2 9 3 dis connect one end of the valve linkage and adjust accordingly Turn the plastic ball end joint to change the length of the linkage increasing the length will increase the Design Height and vise versa Tighten the lock nuts on the valve linkage when complete See Figure 10 3 Set the de sign height by the following sequence 1 deflate the passenger side air bag by disconnecting
12. chieve proper clamp load on the hanger See Figure 2 1 Refer to GM Documents 800862 and 1202795 2 Remove existing U bolts that attach the axle to the leaf spring After this is done axle spring and hanger will be loose Remove only the leaf spring from the axle DO NOT re use existing fasteners such as the U bolts or nuts New fasteners are provided Rear leaf spring hanger bracket can now be removed completely Remove OE Cast Iron Spring Perch from axle this will not be used in the assembly See Figure 2 2 2 3 for details 3 Grind remove 4 rivets that connect the aft of axle cross member to the frame This cross member will be WARNING If truck has C5V042 option the fuel tank will not be in this location but will be mounted further back on the truck Use corresponding holes in upper air spring brackets to accommodate this located 9 72 inches aft of the axle centerline See Figure 2 2 for location of these rivets 4 Remove the OEM shock absorbers and retain the mounting fasteners for later use 5 Remove the OE jounce bumper bracket from the frame on Driver side only These Frame holes will be shared with Lateral Control Bracket mounted to the inside of the frame 6 Remove the OEM Stabilizer bar as it will not be used with the new suspension PASSENGER SIDE DISASSEMBLY 1 Repeat Section 2 for the passenger s side of the truck After disassembly of both sides axle will be loose Place stands under axle as noted in p
13. e a slight pull to seat properly and to be sure airline will not pull out Note If your vehicle has a frame body that does not allow the air control system box to be located as shown you will need to determine another location for mounting and drill the necessary holes If installing on the frame underneath the cab make sure it is mounted as high on the frame as possible to allow for ground clearance below the tank FLANGE BOLTS and 4 5 16 UNF TOPLOCK FLANGE NUTS to fasten the Air Control Box to the frame placing the rubber isolators between the box and frame Do not tighten the fasteners so tight that back of 1 Mount the Air Control Box to the side of the frame in the specified location Use 4 5 16 X 1 3 4 UNF the Air Control Box contacts any bolts protruding from the frame See Table 10 1 for appropriate Torque 2 Route the airlines as shown in Figures 7 1 7 2 amp 7 3 2 1 Route AIRLINE 1 from the supply port of the Height Control Value to the lower outlet port of the Air Reservoir Solenoid 2 2 Route AIRLINE 2 from the top Elbow in the Height Control Valve to the elbow in the Air Reservoir Solenoid 2 3 Route AIRLINE 3 amp 4 from the Run Tee on del port of the Height Control Valve to the Air Springs 3 Place supplied corrugated loom onto all airlines Use supplied cable ties and airline clips to secure airline and to keep it away from all hazardous objects See Figure 7 4 for details FROM DUMP PORT ON
14. e sure that axle itself is centered between the frame rails by measuring from the outside of the driver and passenger side frame rails to the inside of the wheel hub or tire 5 Tighten 8 3 4 UNF HIGH NUTS that were assembled loosely in step 1 See Table 10 1 for appropriate Torque 6 Once both LATERAL CONTROL ROD BRACKETS are installed loosely mount the LATERAL CONTROL ROD between the two sides using 4 5 8 X UNF BOLTS and 4 5 8 UNF TOP LOCK NUTS See Figure 4 1 and 4 2 for details 7 Tighten 4 5 8 UNF TOP LOCK NUTS assembled loosely in step 4 See Table 10 1 for appropriate Torque NOTE Inspect Lateral Control Rod for any interference with other components paying close attention to clearance with any flexible components such as brake and fuel lines UPPER LATERAL CONTROL ROD MOUNT BRACKET LATERAL CONTROL 2 0 0 UPPER LATERAL OE CONTROL ROD JOUNCE MOUNT BRACKET BUMPER RE MOUNT PARKING BRAKE CABLE HERE AXLE MOUNTED LATERAL CONTROL ROD BRACKET A IMPORTANT All frame mounted fasteners must be 5 DRIVER SIDE ASSEMBLY Unbolt Parking brake cable from driver s side of frame and remount using the supplied PARKING BRAKE RELOCATION BRACKET _ This will offset the cable under the frame to allow for clearance from the FRONT HANGER Fig 5 1 5 2 5 5 5 4 See Table 10 1 for appropriate Torque Lond Fasten the FRONT HANGER to the
15. equired or necessary clearance for Suspension components axles wheels tires and other vehicle components to ensure a safe and sound installation and operation Installer is responsible for advising the owner of proper use service and maintenance required by the product and for supplying maintenance and other instruction as readily available from Link Mig INSTALLATION NOTES operation Need for proper Torque value is indicated by wrench symbol and values will be found in Table 10 1 in Maintenance section of the instructions Failure to maintain proper torque can cause component failure resulting in accident with consequent injury Proper tightening of U Bolt Nuts and Mounting Fasteners are required for proper No drilling of new frame holes is required for installation of the suspension Mounting of the air control system will require some holes being drilled into the frame at the location of your choice NOTE When completing the installation of the UltraRide on the GM chassis please reference the appropriate sections GM Service Manual for additional requirements PRE INS TALLATION CHECKLIST Check the vehicle wheel alignment prior to installation to insure no precondition already exists record the information for verification Remove the attached body if applicable Remember to disconnect all electrical connections to the body and fuel filler tube before removing the body The installation can also be completed using a
16. following the installation instructions describe the proper method for checking driveline angles Note improper driveline angles may have a detrimental effect on ride u joints and transmission If any driveline vibration or out of spec angle measurement oc curs use factory axle seat shims to modify driveline angle Kneeling Operation Moving the switch ON to Dump will exhaust all air from the air springs and lower the rear of the vehicle approximately 3 4 inches Air springs will inflate when the switch is returned to the OFF position WARNING Do not drive the vehicle while the Dump Switch is on and the air springs are deflated 14 PARKING BRAKE CABLE 7 70 INCHES RELOCATION BRACKET 4 DESIGN HEIGHT ADJUSTABLE VALVE LINKAGE VALVE ALIGNMENT INDICATOR ROTATED INLINE WITH EXHAUST PORT DRIVER SIDE 10 SERVICE amp MAINTENANCE The UltraRide suspension needs no lubrication and little maintenance The following components should be checked at the time the truck is being serviced However immediate corrective action should be taken if a serious malfunction occurs See Exploded Assembly on following page for details Note It is important to release any moisture contained within the air reservoir on a daily basis This can be done by pulling on the cable attached to the drain valve See Figure 7 4 Not releasing the moisture on a regular basis will cause the drain valve to not operate properly and may ca
17. g out as shown PARKING BRAKE CABLE RELOCATION BRACKET HEIGHT CONTROL VALVE E Ry rer cen UPPER AIR SPRING BRACKET LOWER LATERAL CONTROL AIR SPRING MOUNT BRACKET LATERAL CONTROL ROD 7 78 FROM BUMPER CL TO FRONT MOUNT BOLT co IR H PASSENGER SIDE ASSEMBLY 1 Repeat Section for the passenger s side of the truck 2 Check all clearance points and all alignments See Figure 5 1 for details UPPER AIR OE JOUNCE HEIGHT CONTROL SPRING BRACKET BUMPER VALVE FRONT HANGER AIR SPRING TRAILING ARM IMPORTANT Double check all fasteners for proper torque 8 AFTER BOTH SIDES HAVE BEEN INSTALLED SECTIONS 3 4 5 6 FINISH THE FOLLOWING STEPS 9 Install the new SHOCK ABSORBERS using the same orientation as factory using hardware provided 10 IMPORTANT Route the all brake cables away from the air spring and other moving components A PARKING BRAKE CABLE RELOCATION BRACKET has been supplied with kit This will allow it to clear the DRIVER S SIDE FRONT HANGER BRACKET Double check clearance with it and all other components after complete assembly 10 7 CONTROL SYSTEMASSEMBLY CAUTION Route all airline away from exhaust moving parts and sharp objects careful not to crimp the edges of the tubing When installing the airline fully insert into fitting and giv
18. gles in each of the following conditions for later comparison a The chassis as first received from Ford note that the drive angles may not conform exactly to this bulletin in this incomplete condition b The completed vehicle unloaded The completed vehicle loaded to GVWR with maximum front GAWR d The completed vehicle loaded to GVWR with maximum rear GAWR 24
19. istort the chassis enough to make any measurements inaccurate MATCH MOUNTING DRIVESHAFTS TO THE REAR AXLE Runout is measured on OEM rear axle input shafts and the maximum measurement is marked with a yellow dot on the yoke or pilot bearing flange The OEM driveshafts are also marked with a yellow dot on the light side When the parts are assembled the marks are aligned to aid the overall system balance Vehicle modifiers should look for these dots and maintain this match when the drivetrain is reassembled after modification Remanufactured or modified driveshafts should also have their light sides matched to the yellow dot DRIVELINE VIBRATION DAMPERS Driveline vibration dampers are sometimes added to driveshafts or axles to reduce noise vibration and harshness NVH If the chassis has these devices when it is received they should be retained on the modified chassis USE OF DOUBLE CARDAN UNIVERSAL JOINTS FOR GREATER DRIVE ANGLES In general the use of these joints can allow increased drive angles up to as much as 8 degrees However when used at the rear of a coupling shaft a double cardan universal joint will prevent cancellation from occurring at the forward end of the shaft Therefore the single cardan joint must still be maintained at less than 3 degrees or 4 degees for the F Super Duty series GENERAL COMMENTS It is good practice for any chassis that will have a driveline modification to measure and record the driveline an
20. re installation checklist to keep in place _ REMOVE OEM FRONT 77 HANGER BRACKETS 4 4 7 PIG ie E ie 7 REMOVE OEM 22 STABILIZER REMOVE OEM REAR HANGER BRACKETS _ 4 85 REMOVE TH 4 RIVETS IF PRESENT UPPER AIR SPRING BRACKET WILL BE MOUNTED HERE PASSENGER SIDE VIEW SHOWING COMPLETION OF PREP WORK PRIOR TO INSTALLATION 4 LATERAL CONTROL ROD 1 Review Figure 5 3 amp Parts List Drawing Section 10 to acquaint yourself with the various parts of the UltraRide suspension 2 Position AXLE MOUNTED LATERAL CONTROL ROD BRACKET onto axle as shown Fig 4 1 Mount Loosely to axle using 4 3 4 UNF SQUARE BOLTS 8 3 4 SAE HARDENED WASHERS and 8 3 4 UNF HIGH NUTS Parking brake cable will need to be remounted in the position shown in Fig 4 1 and 5 3 3 Place the frame mounted UPPER LATERAL CONTROL ROD BRACKET to the inside of the frame Fasten this bracket to the frame using 4 1 2 UNC TOP LOCK FLANGE NUTS with bolts protruding through from the inside out Place The OE Jounce Bumper back in place on the outside of the frame as it was See Table 10 1 for appropriate Torque 4 Check to mak
21. the linkage from the arm 2 with the driver side linkage connected measure the design height and adjust accordingly by the methods mentioned above 3 once the design height is set for the driver side repeat the same steps for the passenger side including deflating the driver side air bag Once the design height is set reconnect the linkages Jostle the suspension up and down and then allow it to come back to design height Recheck the initial measurement and adjust if needed Note this procedure to set design height can be done when empty or under light load Move the suspension throughout its entire range of motion by inflating and deflating the air springs to achieve full travel Check for any interferences with the lateral control rod axle shocks exhaust frame brake lines especially on the driver side fuel lines etc Reconnect the valve linkage to the lever Note if contacting the brake lines hand caulk the line to make clearance at least 1 4 between the brake line and the axle brackets IMPORTANT Check all fittings and airlines for air leaks Reinstall the chassis body if applicable IMPORTANT During servicing check tightness of all fasteners and for any air system leaks See Table 10 1 for torque specifications Immediate corrective action should be taken if malfunctions occur 10 After all final checks are complete it is recommended to complete a full four wheel alignment and 11 drive line angle check The pages
22. use the valve to malfunction Excess moisture in the system can also cause premature failure of other components including the tank itself CAUTION maintenance or service 15 to be done on the air system be sure to drain all air from system Serious injury could occur if components are removed while system is full of air INSTALLATION amp MAINTENANCE CHECK LIST Check and document OE rear axle alignment Set Design Height to 7 7 inches Verify Suspension function via dump and re inflation Check for air leaks and system integrity Check clearances throughout suspension motion range Check driveline angle 4 wheel alignment After installation measure and record wheelbase and centering dimensions See Fig 10 2 on following page 16 TORQUE TABLE Table 10 1 LOCATION FASTENER TORQUE FRAME MOUNTED FRONT HANGER 1 2 UNC NUTS 90 120 FT LBS FRAME MOUNTED UPPER AIR SPRING 1 2 UNC NUTS 90 120 FT LBS FRAME MOUNTED LATERAL CON 2 0 1 2 UNC NUTS 90 120 FT LBS AXLE MOUNTED LATERAL CONTROL HIGH NUTS FOR 3 4 ROD BRACKET UNE U BOLTS 170 200 FT LBS AIR SPRING STUD WHEELBASE DIM 1 CENTERING DIM CENTERING DIM 2 WHEELBASE DIM 2 Ultrakide GMc 4500 5500 4x4 PARTS LIST ITEM PART NUMBER DESCRIPTION QTY SHOCK ABSORBER 7 22 10 1435 1008 16 1 UNC RND HD SQ NK BOLT GRADE 5 12 1 4 UNC HEX NUT GR B 13 14 1474 2404
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