Chevrolet 70 1969 Series, Shop Manual

Page: 591 / 913

REAR AXLE 4-36
Figure 14 — D isa sse m b ly or A sse m b ly o f O u tp u t S h a ft
remove cotter pin and loosen drive pinion heli­
cal gear nut (28).
Procedures for removal and disassembly of forward and
Figure I S — Pinion C a g » Bearing C u p Removal
rearw ard axle differential assem bly used on these axles is
described and illustrated in section for Eaton axle model
17121.
PINION CA G E REMOVAL (FWD. AXLE)
1. Use suitable gear puller to remove gear from pinion.
2. Rem ove cap screws and lock washers attaching pinion
cage (24) to differential carrier.
3. Use brass rod and ham m er to tap end of pinion so to
drive assembly from carrier. R otate assem bly during
removal operations so as not to dam age bearing.
4. Remove adjusting shims (25) from between case and
carrier. W ire shim pack together to facilitate adjust­
m ent at time of assembly.
PINION AND C A G E DISASSEMBLY (FWD. AXLE)
1. Place assembly in arbor press with cage on arbor
plates. Press pinion dow nw ard and out of cage.
2. Remove bearing adjusting spacer (26), used between
bearings, and tag for reassem bly reference.
3. Bearing cups can be removed from pinion cage with
rem over (J-3940) in m anner illustrated in Figure 15
when inspection indicates necessity.
4. If inspection indicates necessity, rem ove bearings
from pinion using puller (J-3493) in m anner illustrat­
ed in figure 16.
PINION AND C A G E REMOVAL AND
DISASSEMBLY (REARWARD AXLE)
Procedures for removal and disassembly of rearw ard
axle pinion and cage, used on these axles, is the sam e as
described and illustrated in section for E aton rear axle
model 17121.
REPAIR
DIFFERENTIAL PINION GEAR BUSHING
Replacement
Remove bushings, using suitable remover, or punch and
press to drive bushings from gear.
Press new bushings into gear until bushing is not less
than 3 /16 inch below edge of hole in gear. Burnish or
ream bushings to size given in “ Specifications.”
OUTPUT SHAFT BUSHING
Replacement
Rem ove bushing, using slide h a m m er and puller.
Press new bushing into shaft until bushing is 1/8 inch
below end of shaft. Burnish or ream bushing to size given
in “ Specifications.”
CHEVROLET SERIES 70-80 H EAVY DUTY TRUCK S H O P M A N U A L