GMC 1990 Light Truck Repair Manual page 306

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"
I5I
Tighten
Bolts (6) to 40 N-m (30 ft. lbs.).
Inspect (Figure 40)
L *
• 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
drift. The shift mechanism should work
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