K 20 P/U 4WD V8-454 7.4L (1985)
2.
Place a belt tension gauge, J-23600-B, or equivalent, midway in the drive belt No. 4 (Figure 2).
3.
Adjust No. 4 drive belt so that the tension on the belt is 250 Newtons (56 pounds).
4.
Finger tighten the two A.I.R. pump bolts, while maintaining belt tension.
5.
Torque the A.I.R. pump pivot and adjustment bolts to 33 N-m (24 ft.lbs.).
6.
Inspect the belt tension and remove belt tension gauge.
7.
Clean and dry the A.I.R. pump support bracket area shown in Figure 3.
8.
Apply the information label, P/N 10055411, to the A.I.R. pump support bracket (Figure 3).
NOTE:
Information labels are available from GMWWD.
