Chevrolet 70 1969 Series, Shop Manual

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REAR SUSPENSION 4C-42
EATON 17121, 17221, 30DSC, A N D 34DSC AXLES
ROCKWELL SLHD,
AXLE
EATON 18121, 18221, A N D 19201 AXLES
1 Axle Shaft 14 Wheel Rim Spacer
2 Shaft-to-Hub Dowel 15 Brake Drum
3 Lock Nut
16 Bolt
4 Lock Nut 17 Oil Shield
5 Nut Lock 18 Inner Bearing Cup
6 Bearing Adjusting Nut 19 Inner Bearing Cone
7 Outer Bearing Cone and Rollers
and Rollers 20 Inner Oil Seal
8 Outer Bearing Cup 21 Oil Seal Sleeve
9 Hub
22 Lock Ring
10 Wheel Rim Clamp 23 Outer Oil Seal
11 Stud
Wiper
12 Nut 24 Outer Oil Seal
13 Wheel Rims
25 Dowel
ROCKWELL SQ H D AXLE
T -30 19
Figure 3 — Rear Hubs and Bearings (with Cast-Type Wheels)
7. Remove inner oil seal from wheel (hub) and
drum assembly; then remove inner bearing cone
and roller assembly from hub. Discard oil seal.
8. Clean, inspect, and repair parts as describ­
ed later in this section.
IN S T A L L A T IO N (Figs. 2 and 3)
After completing "Cleaning, Inspection, and
Repair” operations described later in this section,
lubricate bearings, axle housing tube, and inside
of hub as described in LU B R IC A T IO N (SEC. 0) of
this manual. Coat lip of inner oil seal and surface
contacted by lip with wheel bearing grease or equiv­
alent.
1. Position inner bearing cone and roller as­
sembly in hub or wheel (hub) and drum assembly.
Coat oil seal bore in hub with a thin layer of non­
hardening sealing compound.
2. Using suitable tools, install oil seals as
follows:
a. Press seal into hub until shoulder is against
outer edge of hub. Lip of oil seal goes into hub first
(see figs. 2 and 3).
b. Wipe excess sealing compound out of hub.
Make sure no sealing compound gets on lip of oil
seal.
3. Make sure oil seal sleeve (if used), is in
place on axle housing tube.
4. Install wheel hub and drum assembly or hub
assembly on axle housing tube. Use care not to
damage the inner oil seal.
5. Place outer bearing cone and roller assem­
bly on axle housing tube and press firmly into
place with fingers. Install bearing adjusting nut.
6. Install brake drum (if removed). Install
tire and rim assembly or tire and wheel assembly.
CHEVROLET SERIES 70 -80 H EAVY DUTY TRUCK S H O P M A N U A L