Specifications - GMC 1990 Light Truck Repair Manual

; Important
Make sure that the seal (10), housing (1)
and swage ring (9) all remain in alignment
(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 lts ......................................................... ..........................................
Carrier Case B o lts .................................................... ..........................................
Axle Tube Bolts........................................................... ..........................................
A c tu a to r..................................................................... ..........................................
Front Axle S w itch....................................................... ..........................................
Drain and Fill Plugs..................................................... ..........................................
Seal Retaining Clamp................................................. ..........................................
Pinion Shaft Shims
(K15-25 Models).........................................................................................................................................0.020-0.024-inch
(K35 M odels)........................................................................................................................................... 0.508-0.5842 mm
Output Shaft Shims
K15-25 M odels...........................................................................................................1.27, 1.78, 2.29, 2.70, 3.30, 3.81 mm
K35 M odels...................................................................................................... 1.80, 2.30, 2.80, 3.30, 3.80, 4.30, 4.80 mm
Pinion Preload
Backlash . . . .
(Preferred) .

SPECIFICATIONS

TORQUE SPECIFICATIONS
AVAILABLE SHIM SIZES
PINION PRELOAD AND BACKLASH
K TRUCK FRONT AXLE 4C4-27
N-m
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.)
Ft. In.
Lbs. 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