Chevrolet 1991 Light Duty Truck Repair Manual page 214

4B7-10 LOCKING DIFFERENTIAL
Fastener
Differential Lockscrew
7 1/2, 7 5/8, and 8 1 /2-inch..............................................
9 1/2-inch............................................................................
Color Code
Purple..................................
White...................................
Brown..................................
Yellow..................................
Orange................................
Pink.....................................
Green..................................
Blue.....................................
Black...................................
7 1/2, 7 5/8, 8 1/2 and 9 1/2 Inch Axles
0.10-inch
0.15-inch
0.20-inch
0.25-inch
0.30-inch
0.35-inch
0.40-inch
0.45-inch
7 5/8-Inch
1/2,
0.022-inch
0.027-inch
0.032-inch
0.036-inch
0.040-inch
—
0.044-inch
0.048-inch
0.052-inch
Lubricant
SPECIFICATIONS
THRUST BLOCK SIZES
7 1/2, 7 5/8-Inch
1.260-inch
1.264-inch
1.268-inch
1.272-inch
1.276-inch
1.280-inch
1.284-inch
1.288-inch
—
REACTION BLOCK SIZE — 10 1/2-INCH
0.787-inch
RIGHT HAND SIDE GEAR THRUST WASHER
LEFT HAND SIDE GEAR THRUST WASHER
8 1/2-lnch
0.022-inch
0.027-inch
0.032-inch
0.036-inch
0.040-inch
—
0.044-inch
0.048-inch
0.052-inch
N-m
36
50
8 1/2-Inch
1.322-inch
1.326-inch
1.330-inch
1.334-inch
1.338-inch
1.342-inch
1.346-inch
1.350-inch
—
10 1/2 Inch A.
0.022-inch
0.027-inch
0.032-inch
0.036-inch
0.040-inch
0.042-inch
0.044-inch
0.048-inch
0.052-inch
9 1/2-lnch
0.022-inch
0.027-inch
0.032-inch
0.036-inch
0.040-inch
0.042-inch
0.044-inch
0.048-inch
0.052-inch
............................... 80W90 GL-5
(Do not use limited slip additive)
Ft. Lbs.
27
37
9 1/2-Inch
1.598-inch
1.602-inch
1.606-inch
1.610-inch
1.614-inch
1.618-inch
1.622-inch
1.626-inch
1.630-inch
10 1/2-lnch
0.10-inch
0.15-inch
0.20-inch
0.25-inch
0.30-inch
0.35-inch
0.40-inch
0.45-inch
T2514