Specifications - GMC 1989 Light Duty Truck Repair Manual

; Important
Make sure that the seal (10), housing (
and swage ring (9) all remain in alignm ent
(figure 47).
— Continue to tighten each bolt 180° at a time,
alternating until both sides are bottomed.
• Remove the axle assembly from the tool.
FASTENER
Ring Gear B o lt s ...............................................................................................................
Carrier Case B o lt s ..........................................................................................................
Axle Tube B olts.................................................................................................................
A c tu a to r ............................................................................................................................
Front Axle S w itc h ......................................................................................................
Drain and Fill Plugs..........................................................................................................
Seal Retaining C lam p ......................................................................................................
Pinion Shaft Shims
(K15-25 M odels)...................................................................................................................................................... 0.020-0.024-inch
(K35 M o d e ls )........................................................................................................................................................ 0.508-0.5842 mm
Output Shaft Shims
K15-25 M o d e ls ..................................................................................................................... 1.27, 1.78, 2.29, 2.70, 3.30, 3.81 mm
K35 M o d e ls ................................................................................................................ 1.80, 2.30, 2.80, 3.30, 3.80, 4.30, 4.80 mm
Pinion Preload
Backlash . . . .
(Preferred) .
1
)

SPECIFICATIONS

TORQUE SPECIFICATIONS
AVAILABLE SHIM SIZES
PINION PRELOAD AND BACKLASH
K TRUCK FRONT AXLE 4C4-27
N-m Ft. Lbs.
120
47
40
22
5.0
33
136
. . .1.7-2.8 N-m (15-25 in. lbs.)
0.08-0.25 mm (0.003-0.010-in.)
.0.13-0.18 mm (0.005-0.007-in.)
In. Lbs.
88 —
35 —
30 —
16 —
— 45
24 —
100 —
0.025-0.029-inch
0.030-0.034-inch
0.035-0.039-inch
0.6096-0.7112 mm
0.7366-0.8382 mm
0.8386-0.9398 mm