Checking the Suspension U-Bolt Torque
Check the U-bolt torque of both the front and rear axles where applicable.
Notice: Failure to retorque the U-bolt nuts could result in spring breakage and abnormal tire wear.
- Park the vehicle on a flat surface and apply the parking brake. Chock the tires.
- Check the U-bolt torque in a diagonal pattern. Set a click-type torque wrench to the highest torque value for the fastener being checked. See Table. for U-bolt torque specifications. Turn the wrench in a clockwise motion (looking up) until the torque wrench clicks.
- Remove the chocks.
Table 1, U-Bolt Torque Values
Description
Size
Torque: lbf·ft (N·m) 1
Spring Assembly U-Bolt High Nuts
5/8–18
Stage 1: Hand tighten
Stage 2: 60 (81)
Stage 3: 180 (244)
Stage 4: 200 to 230 (271 to 312)
3/4–16
Stage 1: Hand tighten
Stage 2: 60 (81)
Stage 3: 200 (271)
Stage 4: 270 to 330 (367 to 449)
7/8–14
Stage 1: Hand tighten
Stage 2: 60 (81)
Stage 3: 200 (271)
Stage 4: 420 to 500 (571 to 680)
1–14
Stage 1: Hand tighten
Stage 2: 60 (81)
Stage 3: 200 (271)
Stage 4: 520 to 600 (707 to 816)
Table 1, U-Bolt Torque Values
Fig. 1, Tightening Sequence for U-Bolt High Nuts