Chevrolet LIGHT DUTY TRUCK (SERIES 10-35) Service Manual page 358

LUBE FITTING
Fig. 4A -22--Lubrication F itting Dana Style
wear or are broken, replace the entire set with a service kit.
Whenever the seal is removed to inspect ball seat parts,
it should be discarded and replaced with a new seal.
3. Remove all plastic from groove of coupling yoke.
4. Inspect the centering ball surface. If it shows signs
of wear beyond smooth polish, replace it.
Centering Ball Replacement
1. Place fingers of inner part of Tool J-23996 under ball
as shown in figure 4A-27.
2. Place outer cylinder of Tool J-23996 over outside of
ball as shown in figure 4A-28.
3. Thread nut on Tool J-23996 and draw ball off stud,
using wrench as shown in figure 4A-29.
4. Place the replacement ball on stud.
5. Using Tool J-23996, drive ball onto stud as in figure
4A-30, until the ball can be seen to seat firmly against the
shoulder at the base of the stud. This is important as the
center of the double Cardan joint is determined by the ball
seating tightly in the proper location.
Fig. 4 A - 2 3 - - B e a r i n g C a p R em o va l S e q u e n c e
PROPELLER SHAFT
FLANGE YOKE
COUPLING YOKE
ALIGNMENT PUNCH MARKS
Fig. 4A -24-R easse m bling Coupling Yoke
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-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.
Fig. 4 A - 2 5 ~ C r o s s S e c t io n a l V i e w of C V J o in t
4 A -1 1
BALL SUPPORT
TUBE YOKE
FLANGE YOKE
LIGHT T R U CK S ER V IC E MANUAL