Chevrolet 1980 Light Duty Truck Service Manual page 324

4A -12 PROPELLER SHAFT
Fig. 4A-27~lnstalling Tool J-23996 Over Ball
7. Lubricate seal lip and press seal flush with Tool J-
23694, as shown in figure 4A-31. Sealing lip should tip
inward.
8. Fill cavity with grease provided in kit.
9. Install flange yoke to centering ball as shown in
figure 4A-32, making sure alignment marks are correctly
positioned. Install trunnion and bearing caps as previously
outlined.
LUBRICATION
The front axle propshaft found on all four-wheel drive
trucks requires special lubrication procedures at two
locations: The C/V joint, and the slip yoke.
Constant Velocity Joints (C/V)
The constant velocity (C/V) joint, located at the
transfer case end of the front propshaft, must be lubricated
Fig. 4A-28--lnstalling Outer Cylinder of Tool J-23996 Over
Ball
Fig. 4A-29~Removing Centering Ball
periodically (see Section 0) with special lubricant,
# 1050679, or equivalent. If the fitting cannot be seen from
beneath the vehicle Figure 4A-22 shows how the fitting may
be lubricated from above the C/V joint, with a special
adapter J-25512-2 on the end of a flex hose.
Slip Spline
Apply chassis lubricant at the fitting until grease begins
to leave through the vent hole.
If the slip spline is dry or corroded, it may be necessary
to disconnect the propshaft from the truck, remove the slip
yoke, and wire brush the affected areas. Wipe clean before
reinstallation. When installing the propshaft to transfer case
front output flange attaching bolts, torque to specification
95-110 N-m (70-80 ft. lbs.).
Fig. 4A-30~lnstalling Centering Ball
LIG H T T R U C K S E R V IC E M ANUAL