GMC 1989 Light Duty Truck Repair Manual page 308

4C4-20 K TRUCK FRONT AXLE
MEASURING DIMENSION " A "
(K15-25 SHOWN)
Figure 39— Measuring Axle Shaft End Play
Figure 38— Measuring to Calculate Shim Size
J 8001
F-5879
MEASURING DIMENSION " B"
Tighten
6
Bolts ( ) to 40 N m (30 ft. lbs.).
Inspect (Figure 40)
• Shift mechanism operation. Insert a drift into
the actuator hole in the axle tube. Rotate the
axle flange while moving the shift fork with the
d rift. T he s h ift m e c h a n is m sh o u ld w ork
smoothly, without bind.
5. Solenoid (10). Apply sealer (GM part no. 1052942
[Loctite 518] or equivalent) to the threads. Tighten to
22 N m (16 ft. lbs.).
6 . Switch (13). Apply sealer (GM part no. 1052942
[Loctite 518] or equivalent) to the threads. Tighten to
5.0 N m (45 in. lbs.).
7. Axle lubricant, as specified in the proper Truck
Service Manual.
8
. Drain and fill plugs (25) with sealing washers (26).
Tighten to 33 N-m (24 ft. lbs.).
F-5878