Chevrolet 1988 Light Duty Truck Repair Manual page 230

4B6-8 12-INCH RING GEAR (ROCKWELL)
Figure 20— Differential Components
3. Cage bolts (56).
Tig h ten
• Bolts to 48 N m (35 ft. lbs.).
DIFFERENTIAL CASE ASSEMBLY
-► 4-
Install or C on n ect
• Lubricate all parts with rear axle lubricant.
1. Differential pinion gears (41) and thrust washers (42)
to the spider (40) (figure 21).
2. Differential side gears (43) and thrust washers (38)
to the d iffe re n tia l case halves in th e ir o rigin al
locations.
3. Differential spider (40) to the differential.
4. The case halves (figure 22).
• Align the scribe marks on the case halves.
5. Case bolts (44).
Figure 22— Installing the Case Halves
Figure 23 — Checking the Bearing Cup Fit
Tig h ten
• Bolts (44) to 61 N m (45 ft. lbs).
Check that the m ating surfaces of the differential
case and the ring gear are clean and burr free.
The ring gear must be heated before assembly to
the differential case. Heat the ring gear in water to
160° — 180° F for 10 minutes before assembly.
Ring gear (37) to the differential.
• T h re a d tw o s tu d s in to th e rin g g e a r on
opposite sides.
• Place the ring gear onto the case, and align
the holes in the c ase with the studs.
New ring gear bolts (44).
• T ig h te n the ring gear bolts a lte rn a te ly in
stages gradually pulling the ring gear onto the
differential case.
&
T ig h te n
• The ring gear bolts in sequence to 136 N m
(100 ft. lbs.).
8. Differential side bearings (33).
Figure 24— Installing the Bearing Cup
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