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MAINTENANCE
FN20/FN14 NITRO 02/10 Maintenance Section 5-16
© 2010 Alamo Group Inc.
MAINTENANCE
17. Use the cross trunnion as a pilot. Start the
new bearing cup on the cross and into the
opening in the center housing. Push the
cross into the bearing cup while driving the
trunnions of the cross parallel with the
openings for the bearing cups. Hit the
bearing cup lightly with a hammer. Using
the vise, drive the bearing cup into the yoke
until the bearing cup is flush with the yoke
ear. Figure MntP-R-0144
18. Keep the cross in the bearing cup and start
the other bearing cup into the center
housing. Use a hammer to drive the bearing
cup into the yoke just far enough to make
sure the bearing cup is straight.
19. Put the center housing into vise so the
bearing cups are square with the jaws of
the vise. make sure the trunnions are
aligned with the bearing cups. Tighten the
vise until both bearing cups are flush with
the ears. Make sure the needle rollers do
not fall out of the bearing cups. Figure
MntP-R-0145
20. Using the driver and hammer, drive one of
the bearing cups into the center housing
until the groove for the snap ring can be
seen on the bearing cup.
21. Install the snap ring. Make sure the snap
ring is seated in the groove all the way
around.
22. Repeat Steps 20-21 for the other snap ring.
23. Set the shaft yoke on the vise so the ears of
the shaft yoke are supported by the jaws of
the vise. Carefully hit the center housing
with the hammer to seat the bearing cup
against the snap ring. DO NOT hit the
center housing on the machined surface or
near the opening for the bearing cup.
Figure MntP-R-0146
24. Turn the shaft yoke over in the vise.
Carefully hit the center housing with the
hammer to seat the other bearing cup
against the snap ring.
25. Repeat Steps 14-24 for the end yoke.
Figure MntP-R-0147
26. Apply grease to the fittings in the crosses
until grease comes from the seals. Apply
ten pumps to the fitting on the shaft yoke
supplying the ball sockets. Apply ten pumps
to the fitting on the center housing,
supplying the center plates.
27. Clean the shaft and sleeve splines and
grease them.