GMC 1989 Light Duty Truck Repair Manual page 239

5. Left side gear (46)
6
. Latching bracket assembly (43).
7. Governor assembly (48).
• The straight end of the latching bracket spring
m ust be over and o u tsid e the g o ve rn o r
assembly shaft.
FASTENER
Differential Lockscrew
71 2 5 81 2
/ , 7 /s, and / -inch
91 2
/ -in c h ........................
Color Code
P u r p le ...............................
W h ite .................................
Brown.................................
Yellow.................................
O range...............................
P in k ...................................
G re e n .................................
B lu e ...................................
B la c k .................................
7 1/2, 7 5 /b, 81 /2
0
0.15-inch
0
0.25-inch
0.30-inch
0.35-inch
0.40-inch
0.45-inch
5
71/2-, 7 /s-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
Lubricant
SPECIFICATIONS
THRUST BLOCK SIZES
7 2 5
V -, 7 /s-lnch
............... 1.260- nch
............... 1.264- nch
............... 1.268- nch
............... 1.272- nch
1.276- nch
...............
............... 1.280- nch
............... 1.284- nch
............... 1.288- nch
REACTION BLOCK SIZES — lOVa-INCH
RIGHT HAND SIDE GEAR THRUST WASHER
and 9 1 A > Inch Axles
10
. -inch
20
. -inch
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
LOCKING DIFFERENTIALS 4B7-9
8
. Case halves (31) together.
• Hold the side gear in the left side case half.
9. Case screws (32).
10. The ring gear and differential side bearings. Refer to
"Assem bly of the Rear A xle" under the "
Ring G ear" heading.
81 2
/ -lnch
1.322- nch
1.326- nch
1.330- nch
1.334- nch
1.338- nch
1.342- nch
1.346- nch
1.350- nch
0.675-inch
0.672-inch
0.669-inch
0 . 666 -inch
91 / 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
N m
36
50
91 2
/ -lnch
1.598- inch
1.602- nch
1.606- inch
inch
1.610-
1.614- inch
1.618- inch
1.622- nch
1.626- nch
1.630- nch
IO V 2 Inch Axles
0.027-inch
0.032-inch
0.037-inch
0.040-inch
0.042-inch
0.044-inch
0.048-inch
101 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.)
10 2
f/ -lnch
FT. LBS.
27
37