Chevrolet 70 1969 Series, Shop Manual

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A — PINION AN D CAGE ASSEMBLY
B— LOOSENING BEVEL GEAR C-BEVEL GEAR REMOVAL
OR INSTALLATION T
-4 3 8 6
Figure 7 — O v e rh a u l O p e ratio n s
moved before pinion and cage assem bly can be removed.
1. Rem ove pinion bearing cage cap screws (63) and lock
washers.
2. Invert carrier and tap inner end of drive pinion with
brass drift and ham m er until pinion and cage assem ­
bly is free from carrier (View C, fig. 6). Use caution
so as not to let assem bly be dam aged by dropping.
3. Rem ove adjusting shims (60) from between carrier
and cage, noting quantity and thickness for use at as­
sembly. T ag shims for identification at tim e of instal­
lation at reassembly.
D ISA SSEM B LY OF SUBASSEM BLIES
PINION AND C A G E DISASSEMBLY
Key num bers in text refer to Figure 14.
C heck pinion end play and bearing adjustm ent before
disassembling, then proceed as follows:
1. Hold propeller shaft yoke (16) in vise in m anner illus­
trated in View A, Figure 7.
2. Rem ove nut (19) and flat washer (18).
N O T E : Som e axles use a cork seal (17) under flat w ash­
er.
3. Place assem bly in arbcr press with cage on bed of
arbor. Press pinion (2) dow nw ard and out of cage.
Remove propeller shaft yoke (16).
4. Rem ove bearing adjusting spacer (4) from pinion and
tag for reassem bly reference.
N O T E : Som e axles also use a w asher (5) in addition to
spacer.
5. Pry oil seal and retainer assem bly (15) from cage.
N O T E : Som e axles use a flat washer (12) under oil seal
retainer.
6. Rem ove pinion outer bearing cone (10) from cage as­
sembly.
7. If necessary, pinion bearing cone (3) can be removed,
using puller (J-3493) as shown in Figure 8. Straight
pilot bearing (1) can be rem oved from pinion using
sam e puller tool.
8. W hen inspection indicates necessity, cups (6 and 9)
can be rem oved from cage with rem over tool (J-3940)
in m anner illustrated in Figure 9.
PLANETARY UNIT DISASSEMBLY
Key num bers in text refer to Figure 17.
1. Rem ove nuts (13) from drive gear bolts (3), then re­
move bolts.
2. T ap drive gear (11) with raw hide m allet until free of
support case flange (View B, fig. 7).
3. Lift left support case (12), thrust w asher (10), and
drive gear (11) off right support case (View C, fig. 7).
4. Pry high speed clutch plate (9) off idler pinion (8) and
Figure 8 — R e m o v in g B e a r in g s From P in io n W ith Puller
REM O V IN G INNER
ROLLER BEARING
T PM -6551
CHEVROLET SERIES 70-80 H EAVY DUTY TRUCK SH O P M A N U A L