Chevrolet 1977 light duty truck, Service Manual

Page: 343 / 861

and bearing cup being removed, as shown in figure 4A-
13.
Complete the removal o f the bearing cup, by
pressing it out o f the yoke.
3. Rotate the drive shaft, shear the opposite plastic
retainer, and press the opposite bearing cup out o f the
yoke as before, using Spacer J-9522.
4. D isengage cross from yoke and remove.
N O T E : Production universal joints cannot be
reassem bled. There are no bearing retain er grooves
in production bearing cups. Discard all universal
jo in t parts removed.
5. Remove the rem ains o f the sheared plastic
b earin g retain er from the ears o f the yoke. This will aid
in reassembly o f the service j o in t bearing cups. It usually
is easier to remove plastic if a small pin or punch is first
driven through the injection holes.
6. If the front universal jo in t is being serviced,
remove the pair o f b earin g cups from the slip yoke in
the same m anner.
Reassembly
A u n iv ersal j o i n t service kit is used w hen
reassem bling this jo int. See figure 4A-14. This kit
includes one pregreased cross assembly, four service
b earin g cup assemblies with seals, needle rollers,
washers, grease and four bearing retainers.
M ake sure that the seals are in place on the service
b earin g cups to hold the needle rollers in place for
handling.
1. Remove all o f the rem ains o f the sheared plastic
b earin g retainers from the grooves in the yokes. The
sheared plastic may prevent the b earin g cups from being
pressed into place, and this prevent the bearing retainers
from being properly seated.
2. Install one bearing cup p a r t way into one side o f
the yoke, and tu rn this yoke e a r to the bottom.
3. Insert cross into yoke so th at the trunnion seats
freely into b earin g cup as shown in figure 4A-15.
ROLLER B E A R IN G S
B E A R IN G RETAINER
Fig. 4A-14 Repair Kit
4. Install opposite bearing cup part way. M ake sure
th at both trunnions are started straight and true into
both bearing cups.
5. Press against opposite bearing cups, working the
cross all o f the time to check for free movem ent o f the
trunnions in the bearings. If there seems to be a h a n g ­
up, stop pressing and recheck needle rollers, to determ ine
if one or more o f them has been tipped u n d e r the end o f
the trunnion.
6. As soon as one bearing retainer groove clears
the inside o f the yoke, stop pressing and snap the
bearing retainer into place as shown in figure 4A-16.
7. C ontinue to press until the opposite bearing
retain er can be sn a p p e d into place. If difficulty is
encountered, strike the yoke firmly with a h a m m e r to aid
in seating bearing retainers. This springs the yoke ears
slightly. See figure 4A-17.
8. Assemble the other half o f the universal jo in t in
the same manner.