Chevrolet 70 1969 Series, Shop Manual

Page: 560 / 913

REAR AXLE 4-5
ing at reassembly.
2. C ut lock wire, then remove cap screws (3) and sepa­
rate case halves (fig. 7).
3. Rem ove four pinions (9) and thrust washers (8) from
Figure 9 — R e m o v in g C u p * from C a g e w ith Re m ov e r
spider. Rem ove differential side gears (7) and thrust
washers (6) from case.
4. If differential side bearings require replacem ent, in
Figure 8 to remove bearings.
PINION AND C A G E DISASSEMBLY
Key num bers in text refer to Figure 13.
REMOVING INNER REMOVING INNER
BEARING CONE ROLLER BEARING
TPM -6551
Figure 1 0 — R e m o v in g B e a r in g s from Pinion w ith Puller
1. Hold propeller shaft yoke (16) with holding bar (J-
3453) in m anner illustrated and described in the Ser­
vice portion of this M anual, then remove nut.
2. Place assembly in arbo r press with cage on bed of a r­
bor. Press drive pinion (2) dow nw ard and out of
cage (8).
3. Remove pinion bearing adjusting spacer (4), from pin­
ion. Carefully tag adjusting spacer for reassem bly ref­
erence. Som e axles also use a spacing washer (5) in
addition to the adjusting spacer.
4. Pry oil seal and retainer assem bly (15) from cage.
NOTE: Some axles use a flat washer (12)
under oil seal retainer.
5. Lift outer bearing cone (10) from cage.
6. W hen inspection indicates necessity, cups (6 and 9)
can be rem oved from cage (fig. 9) with rem over (J-
3940).
7. If necessary, pinion bearing inner cone (3) can be re­
moved with universal puller (J-3493) (fig. 10).
8. Rem ove stake points holding straight roller bearing
(1) to pinion, then remove bearing (fig. 10).
C LE A N IN G , IN SPECTIO N , A N D REPAIR
C L E A N IN G
All com ponent parts of an axle should be thoroughly
cleaned in a cleaning fluid, using a stiff brush if necessary,
to remove dirt, old lubricant, or gasket m aterial.
CLEANING BEARINGS
Proper bearing cleaning is im portant. Bearings should
always be cleaned separately from other rear axle parts.
1. Soak all bearings in clean kerosene, Diesel fuel, gaso­
line, or cleaning solvent. Bearings should not be
cleaned in a hot solution tank.
2. Slush bearings in cleaning solution until all old lubri­
cant is loosened. H old bearing races so th a t bearings
will not rotate; then brush bearings with soft bristled
brush until A L L dirt has been rem oved. Remove
loose particles of dirt by striking flat against a wood
block.
3. Rinse bearings in clean fluid. W hile holding races to
prevent rotation, blow dry with com pressed air. Do
CHEVROLET SERIES 70-80 H EAVY DUTY TRUCK S H O P M A N U A L