Suspension U-Bolt Torque Check
em2 mm 32.02.001
Notice: Failure to retorque the U-bolt nuts could result in spring breakage and abnormal tire wear.
Check the U-bolt torque of both the front and rear axles where applicable.
- Park the vehicle on a level surface and apply the parking brakes. Chock the tires.
- Check the U-bolt torque. See Table. for U-bolt torque
specifications. Tighten in a diagonal pattern as shown in Fig.. Set a click-type
torque wrench to the mid-point torque value for the fastener being
checked. Turn the wrench in a clockwise motion (looking up) until
the torque wrench clicks, then release pressure on the torque wrench,
and turn the wrench again until it clicks. If the nut turns on the
second application, the bolt is stretching and must be replaced. See Group 32 of the eM2™ Workshop Manual for
bolt replacement procedures.
Fig. 1, Tightening Pattern for U-Bolt High Nuts
Table 1, Spring U-Bolt High Nut Torque Values
Spring U-Bolt High Nut Torque Values
Size
Torque: lbf·ft (N·m)
5/8–18
180–230 (245–313)
3/4–16
270–330 (367–449)
7/8–14
420–500 (571–680)
1–14
520–600 (707–816)
M20
216–274 (292–372)
M20 (Airtek)
330–370 (447–502)
Table 1, Spring U-Bolt High Nut Torque Values
Note: