physically. Steps for the removal and disassembly of
a U-joint are as follows:
1. Raise the vehicle and place it on jack stands.
2. Scribe the alignment marks on the differential
yoke and universal joint, so drive shaft balance
is ensured upon reassembly.
3. Unbolt the rear joint from the differential. If
used, also unbolt the center support bearing. Pry
the shaft forward and lower the shaft slightly.
Do NOT allow the full weight of the drive
shaft to hang from the slip yoke. Support the
drive shaft to prevent damage to the extension
housing, rear bushing, and front U-joint.
4. Wrap the tape around the caps to prevent them
from falling off and spilling the roller bearings.
5. Slide the drive shaft out of the transmission. If
the transmission lubricant begins to leak, install
a plastic plug into the extension housing.
6. Before disassembling the universal joint,
especially constant velocity joints, scribe mark
each component. The marks will show you how
to reassemble the joint.
7. Clamp the drive shaft yoke in a vise. Do NOT
clamp the weaker center section of the drive
shaft or it will bend. If used, remove the snap
rings, using a screwdriver, snap-ring pliers, or
needle nose pliers.
Wear safety glasses to protect your eyes in
case the snap rings fly out of the universal joint
8. Use two socketsone LARGER than the
bearing cap and one SMALLER than the
bearing cap. Place the SMALLER socket on the
bearing cap of the universal joint (fig. 5-11). The
LARGER socket is to be placed over the outside
diameter of the bearing cap on the opposite side
of the joint (fig. 5-11).
9. With both sockets and the universal inside the
vise, slowly tighten the vise to force the bearing
caps out of the yoke. Use the same procedure on
the remaining bearing caps, as required.
Figure 5-11.Universal joint removal.
Normally, a universal joint is replaced anytime it is
disassembled. However, if the joint is relatively new,
you can inspect, lubricate, and reassemble it.
During the inspection, clean the roller bearings
and other parts in solvent. Then check the cross and
rollers for signs of wear. If the slightest sign of
roughness or wear is found on any part, REPLACE the
UNIVERSAL JOINT REASSEMBLY.Once
the U-joint has be cleaned and inspected and found to
be in a serviceable condition, it must be reassembled.
Steps for reassembling a U-joint are as follows:
Pack the roller bearings in high-temperature
grease. A good method of keeping the bearing in
place is to fill the bearing cap with grease.
Position the cross inside the yoke. Align your
marks. Then fit the bearing caps into each end of
Center the cross partially into each cap to keep
the roller bearing from falling.
Place the assembly in a vise. Tighten the vise so
that the bearing caps are forced into the yoke.
If the bearing cap fails to press into place
with normal pressure, disassemble the joint
and check the roller bearings. It is easy for a
roller bearing to fall and block cap installation.
If you try to force the cap with excess pressure,
the universal and drive shaft could be