Suspension Fastener Torque Check
Warning: Inspect the suspension fasteners. Failure to perform inspections could result in separation of worn suspension components and loss of vehicle control, possibly causing personal injury or death, or property damage.
- Chock the front or the rear tires. Working at the front of the vehicle or at the rear of the vehicle, raise the vehicle so that the tires just clear the ground and the suspension is fully extended. Place safety stands under the vehicle frame.
- Check the suspension fasteners. See Table. for correct fastener torques.
- Check the torque of the rear axle U-bolts.In a diagonal pattern, tighten all 5/8–18 U-bolt nuts 205 lbf·ft (278 N·m); tighten all 3/4–16 U-bolt nuts 300 lbf·ft (407 N·m); and tighten all 7/8–14 U-bolt nuts 460 lbf·ft (624 N·m).
- Remove the safety stands and lower the vehicle to the ground.
Table 1, Suspension Torque Specifications (lubricated threads)
Description
Size
Torque: lbf·ft (N·m)
Shock Absorber Mount Locknut
3/4–16
110 to 150 (149 to 203)
Air Spring Upper Mounting Plate Locknut
3/4–16
31 to 42 (42 to 57)
Air Spring Upper Mounting Plate Capscrew
1/2–13
31 to 42 (42 to 57)
Air Spring Lower Mounting Plate Capscrew
1/2–13
31 to 42 (42 to 57)
Transverse Beam Bushing Locknuts
1-1/4–12
600 to 700 (814 to 949)
Equalizing Beam Center Bushing Locknut
3/4–16
150 to 200 (203 to 271)
Equalizing Beam Front Bushing Locknut
1-1/8–12
600 to 700 (814 to 949)
1-1/4–12
Control Rod Ball Stud Locknut
1-1/8–12
550 to 650 (746 to 881)
Control and Torque Rod Mounting Locknuts
5/8–18
110 to 150 (149 to 203)
Table 1, Suspension Torque Specifications (lubricated threads)
Notice: Failure to retorque the U-bolt nuts could result in spring breakage and abnormal tire wear.