Chevrolet 1977 light duty truck Service Manual page 348

Fig. 4A-26--Cross Sectional View of CV Joint
Fig. 4A-27--Exploded View of Centering Ball
M echanism
4. Inspect the centering ball surface. If it shows
signs of w ear beyond smooth polish, replace it.
Centering Ball Replacement
1. Place fingers o f inner part o f Tool J-23996
u nd e r ball as shown in figure 4A-28.
2. Place outer cylinder
outside o f ball as shown in figure 4A-29.
3. T h read nut on Tool j-23996 and draw ball off
stud, using wrench as shown in figure 4A-30.
4. Place the replacem ent ball on stud.
5. Using Tool J-23996, drive ball onto stud as in
figure 4A-31, until the ball can be seen to seat firmly
against the shoulder at the base o f the stud. This is
im p o rta n t as the center o f the double C a rd a n joint is
o f Tool J-23996 over
Fig. 4A -28--lnstalling Tool J-23996 Over Ball
Fig. 4 A 29 -Installing Outer Cylinder of Tool J-23996
Over Ball
determ ined by the ball seating tightly in the proper
location.
6. Using grease provided in the ball seat kit,
lubricate all parts and insert them into the clean ball seat
cavity in the following order: spring, washer (smallest
OD), three ball seats (with largest opening outward to
receive ball), washer (largest OD) and seal.
7. Lubricate seal lip and press seal flush with Tool
J-23694, as shown in figure 4A-32. 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-33, making sure alignm ent marks are correctly
positioned. Install tru n n io n
previously outlined.
a n d b e a rin g caps as