GMC 1982 Light Duty Truck Service Manual page 409

ROLLER BEARINGS
BEARING RETAINER
BEA RIN G CUP
ROUND PLASTIC WASHER
Fig. 4A-13-R epair Kit
Complete the removal of the bearing cup, by pressing it
out of the yoke.
3. R o ta te the drive shaft, shear the opposite plastic
retainer, and press the opposite bearing cup out of the
yoke as before, using Spacer J-9522.
4. Disengage cross from yoke and remove. Production
universal joints cannot be reassembled. There are no
bearing retainer grooves in production bearing cups.
Discard all universal joint parts removed.
5. Remove the remains of the sheared plastic bearing
retainer from the ears of the yoke. This will aid in
reassembly of the service joint 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 joint is being serviced, remove the
pair of bearing cups from the slip yoke in the same
manner.
Fig. 4A-1 -4— Installing Trunnion into Yoke
Reassembly
A universal joint service kit is used when reassembling
this joint. See figure 4A-13. This kit includes one pregreased
cross assembly, four service bearing cup assemblies with
seals, needle rollers, washers, grease and four bearing
retainers.
Make sure that the seals are in place on the service
CROSS
bearing cups to hold the needle rollers in place for handling.
1. Remove all of the remains of the sheared plastic
bearing retainers from the grooves in the yokes. The
sheared plastic may prevent the bearing cups from
being pressed into place, and this prevent the bearing
retainers from being properly seated.
2. Install one bearing cup part way into one side of the
yoke, and turn this yoke ear to the bottom.
3. Insert cross into yoke so that the trunnion seats freely
into bearing cup as shown in figure 4 A - 14.
4. Install opposite bearing cup part way. Make sure that
both trunnions are started straight and true into both
bearing cups.
5. Press against opposite bearing cups, working the cross
all of the time to check for free movement of the
trunnions in the bearings. If there seems to be a hang­
up, stop pressing and recheck needle rollers, to
determine if one or more of them has been tipped under
the end of the trunnion.
6. As soon as one bearing retainer groove clears the inside
of the yoke, stop pressing and snap the bearing retainer
into place as shown in figure 4A - 15.
7. Continue to press until the opposite bearing retainer
can be snapped into place. If difficulty is encountered,
strike the yoke firmly with a hamm er to aid in seating
bearing retainers. This springs the yoke ears slightly.
See figure 4 A - 16.
8. Assemble the other half of the universal joint in the
same manner.
9. Check the freedom of rotation of both sets of trunnions
of the cross. If too tight, again rap the yoke ears as
described above. This will loosen the bearings and help
seat the bearing retainers.
Fig. 4 A -1 5— Installing Snap Ring to Retain Trunnion
PROPELLER SHAFT 4 A -7