SL20K Self-Steering Axle and Suspension System Installation Manual
12
FIG – 11 U-Bolt Torque Pattern
Table 3
Table 4
Table 5
U-bolt Torque Instructions
To re-torque U-bolts: See Table 3
1. Partially tighten bolts #1 and #2 according to figure 11.
2. Partially tighten bolts #3 and #4.
Using the same sequence, torque to the proper torque as specified below.
U-Bolt (Non-Plated Clean Lubricated Thread) Torque Requirements
.
Airspring Torque Requirements.
Airspring Air Fitting Torque Requirements.
UNF Grade 8 Size
3/8”
1/2”
5/8”
3/4”
7/8”
1”
1 1/8”
U Bolt minimum ft./lbs.
15
40
120
200
400
650
800
U Bolt maximum ft./lbs.
20
60
150
250
450
750
900
Size
Description
Max Torque Requirement (ft. /lbs.)
3/8”
UNC Blind Nuts
50
1/2”
UNC Bolt or Stud
25
3/4”
UNC Stud
55
3/4”
UNF Combo Stud
50
Size
Max Torque Requirement (ft. /lbs.)
1/4” NPTF
50
1/2” NPTF
25
3/4” NPTF
55
