U-Bolt Torque Values
Description Size
Torque
lbf·ft (N·m)
Spring Assembly U-Bolt High Nuts
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)
*
*
Tighten in a diagonal pattern as shown in Fig. 12.
Table 1, U-Bolt Torque Values
01/05/99
f320783
1
2 3
4
Fig. 12, Tightening Pattern for U-Bolt High Nuts
Suspension 32
Business Class Trucks Maintenance Manual, July 1999 32/9
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