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TM 5-4210-220-12
4-26 DRIVE LINES, POWER TRAIN - Continued
(2)
Visually inspect exposed universal joint
cross journals and needle bearings in
bearing plates. Look for defects caused
by lack of lubrication and physical
damage. If corrosion, pitting, unusual
wear or missing bearing needles is
evident, the universal joint must be
replaced See para. 4-26.4.
(3)
Check the remaining two universal joint
bearings. Grasp the universal joint cross
as shown, and oscillate the cross. Binding
or
looseness
indicates
a
defective
bearing. If damage is evident, the
universal joint must be replaced. See
para. 4-26.4.
(4)
Apply a small amount of grease (item 16,
Appendix E) to needle bearings of
removed bearing plates.
(5)
Install the bearing plates (3) to the
universal joint cross (5).
(6)
Turn and test each bearing plate on the
cross journals as shown. The movement
must be smooth and resistance free.
(7)
Install universal joint in a vise so the loose
bearing plates are clamped to the cross.
Using
a
grease
gun,
lubricate
the
universal joint until grease (item 16,
Appendix E) is expelled from all four
bearing plates. If grease nipple is
blocked, remove and replace.
(8)
Remove universal joint from vise and
temporarily tape or wire bearing plates to
cross.
b.
Shaft inspection (1). Visually inspect drive
shafts for dents, excessive corrosion, cracked
welds, or missing balance weights.
(2)
Inspect yokes, see para. 4-26.1.
(3)
If a drive shaft is damaged it should be
replaced along with the universal joints.
4-505
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