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RAR-254
Air Ride Single Point Suspension
Installation and Service Manual
Suspension Identification ..................................... 2
Suspension System/Axle Serial Tag
Installation ............................................................. 3
Suspension Mounting
Troubleshooting - HCV Installation
Maintenance .......................................................... 6
Recommended Service Intervals
Parts Illustration
RAR-254 (Narrow Bushing) Suspension
RAR-254 - (Narrow) Compensator/Trunnion Assembly
RAR-254 - (Wide Bushing) Suspension
RAR-254 - (Wide) Compensator/Trunnion Assembly
Bushing Replacement Kit
Appendix .............................................................. 14
Torque Specifications (Narrow Bushing)
Torque Specifications (Wide Bushing)
Warranty ............................................................... 16
254-Single Point-ISM-06-21-18
Part No.: 9710125
Page 1
Doc:
254-SinglePoint-ISM 06-21-18
ENG
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Summary of Contents for Ridewell Suspensions RAR-254
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Page 1: Table Of Contents
Troubleshooting - HCV Installation Maintenance ............6 Recommended Service Intervals Parts Illustration RAR-254 (Narrow Bushing) Suspension RAR-254 - (Narrow) Compensator/Trunnion Assembly RAR-254 - (Wide Bushing) Suspension RAR-254 - (Wide) Compensator/Trunnion Assembly Bushing Replacement Kit Bushing Replacement Procedure Trunnion Center Bushing – Replacement Procedure Appendix .............. -
Page 2: Suspension Identification
Introduction It’s important that the proper suspension model be chosen for the application in which it is to be used. The RAR-254 Single Point Suspension is available for PART NO: on-highway and vocational applications. The suspen- sion ships with an integrated 5” drum brake axle. -
Page 3: Installation
Consult the vehicle manufacturer or Federal is not permitted without the express written Motor Vehicle Safety Standards (FMVSS) 121 for permission of Ridewell Suspensions. more information. • The installer must verify there is sufficient clear- ance for proper functioning of the suspension, air springs, brake chambers, axle and tires. - Page 4 Mounting the suspension to the frame Refer to the engineering drawing for the range of 9. After trunnion and axle alignments have been available ride heights, torque values, spacing and completed, torque the four pivot bolts using a clearance requirements of the suspension. 1”...
- Page 5 (HCV) and vertical rod arm/ linkage (Figure 4). RAR-254 Single Point suspensions HCKs are configured by starting with kit 63xxBBAJ00 and replacing the two “X’s” with the height control and pressure protection valve configurations from the HCK assembly drawing.
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Page 6: Maintenance
MAINTENANCE A visual inspection of the suspension structure should be performed during each pre-trip/safety inspection. Ridewell Suspensions recommends the following minimum service intervals for standard duty, on-highway usage applications. More frequent intervals are recommended for heavier duty applications. Annually/100,000 miles of use Refer to the following Technology &... - Page 7 Pivot Bushing (Narrow) Bolt Wear Washers Lock Washer (Air Spring) Figure 6. RAR-254 Air Ride Single Point Suspension – Narrow Bushing Refer to the engineering drawing for the component part number. Mounting Point (Shock Absorber/Shock Strap) Compensator/Trunnion Assembly (RH/HCV Brackets)
- Page 8 Bolt Lock Washer Pivot Bushing (Wide) (Air Spring) Wear Washers Figure 8. RAR-254 Air Ride Single Point Suspension – Wide Bushing Refer to the engineering drawing for the component part number Compensator/Trunnion Assembly - RH (HCV/Shock Mounting Brackets) Mounting Point...
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Page 9: Bushing Replacement Procedure
RAR-254 Air Ride Single Point Suspension – Bushing Replacement Kit Bushing Bushing Pivot Torque Specification Suspension Type REPL Kit Install Tool Hardware foot-pound Newton-meter 2540001; 2540003 6040194 6100044 Shear-Type Narrow Bushing Do not lubricate bolt/nut threads. Use a 1” drive impact wrench to tighten... - Page 10 Narrow Bushing Replacement Procedure - continued Reassemble suspension 4. Assemble the bushing replacement tool and place on the eye of the beam (Figure 10). Rotate beam assembly into trunnion assembly. Install pivot connection hardware – alignment washers, ad- 4.1 Place the end cap on the hex nut-threaded juster plates, wear washers, shear-type pivot bolt, flat rod assembly.
- Page 11 Wide Bushing Replacement Procedure - continued 3. Assemble the bushing replacement tool and place 3. The cone is tapered inside to a smaller opening on the eye of the beam (Figure 11). NOTE: Cone is on one end. Insert the new bushing into the larger tapered inside to smaller opening on one end.
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Page 12: Trunnion Center Bushing - Replacement Procedure
RAR-254 Single Point Suspension – Trunnion Bushing Replacement Hardware Part No. Assembly Hardware Torque Values Narrow Bushing Suspension 500 ft-lb 678 N-m 1143773B105 Trunnion Shaft Bolt (HHCS) 1-1/8”-12NF (Grade 5) 1120049 Trunnion Center Bushing Do not lubricate bolt/nut threads. Use a... - Page 13 Figure 14. RAR-254 – Narrow Compensator/ Mounting Point (Shock Absorber/Shock Strap) Trunnion Assembly Components (see 6110039/610042 drawing) Compensator/Trunnion Assembly (RH/HCV Brackets) Bolt/Locknut (Trunnion Hanger) Compensator/Trunnion Assembly (LH) Trunnion Center Bushing Mounting Bracket (HCV) Trunnion Hanger/Shaft Assembly Thrust Washer Locking Plate...
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Page 14: Appendix
APPENDIX RAR-254 Air Ride Single Point Suspension (Narrow) - Torque Specifications Torque Values Fastener Type Size foot-pound Newton-meter Pivot Bolt (Shear-Type) 7/8”- 9NC Use a 1” drive impact wrench to tighten pivot bolt Pivot Nut (Lock-Nut) until Torx head is sheared off. -
Page 15: Axle Alignment
Axle Alignment Alignment should be performed on a level surface with the suspension at the desired Mounting Bracket ride height. Front axle alignment shall be in Shock Strap Height Control Kit Upper Bolt/Locknut accordance with SAE or TMC recommended Lower Bolt Mounting Point Shock Absorber (HCV/Shock Absorber/Shock Strap) -
Page 16: Warranty
Terms and coverage in this warranty apply only to the United States and Canada. Ridewell Suspensions warrants the suspension systems manufactured by it to be free of defects in mate- rial and workmanship. Warranty coverage applies only to suspensions that have been properly installed, maintained and operated within the rated capacity and recommended application of the suspension.
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