Suspension U-Bolt Torque Check
- Park the vehicle on a flat surface, apply the parking brakes, and 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.
Table 1, Spring Assembly U-Bolt High Nut Torque Values
Spring Assembly U-Bolt High Nut Torque Values1
Size
Torque: lbf·ft (N·m)
5/8–18
Stage 1: Hand Tighten
Stage 2: 60 (81)
Stage 3: 200 (271)
Stage 4: 180 to 230 (245 to 313)
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, Spring Assembly U-Bolt High Nut Torque Values
Fig. 1, Tightening Pattern for U-Bolt High Nuts
Notice: Failure to retorque the U-bolt nuts could result in spring breakage and abnormal tire wear.