TB 1-1520-238-30-19
9.6.1 Weigh annular ball bearing (25) on suitable, clean scale with an accuracy and resolution not greater
than +/-1 gram. Record weight as A on worksheet. If the bearing's weight is between 481 and 482 grams
then the bearing does not need regreasing.
9.6.2 Subtract A from 481 to obtain total grease requirement. Record weight as T on worksheet. T should
not exceed 9 grams. If T exceeds 9 grams replace annular ball bearing (25).
9.6.3 Divide T by 2 to obtain fill per row, F=T/2. Record as F on worksheet. This is the amount of grease
that will be added to each row of the bearing in order to attain a replenished bearing weight of 481 grams.
WARNING
Do not attempt to remove grease from the annular ball bearing (25).
If excess grease is accidently added to the bearing, do not attempt to
remove grease to bring the total weight below 482 grams. If total bear-
ing weight after regreasing is more than 482 grams, replace annular
ball bearing (25).
9.7 Add grease to the annular ball bearing (25) as follows:
9.7.1 Place bearing on one of its end faces on clean scale. Using the grease filled syringe, inject the grease
into the bearing ball row that is face up into the space between the balls, filling the ball row with F grams of
the grease. Access this space by injecting between the inner ring shoulder and the retainer (cage) inner
diameter. Monitor the scale reading to insure that the proper amount of grease is being added. Be sure to
distribute the grease approximately equally between all ball spaces. Continue to inject grease into the ball
row until the bearing weighs A + F. Pick up the bearing, hold the inner ring, and rotate the outer ring slowly
several turns to distribute the grease.
9.7.2 Place the bearing on its other end face with the non-regreased ball row face up on the scale. Using
a grease filled syringe, inject the grease into the bearing ball row that is face up into the space between the
balls, filling the ball row with F grams of the grease. Access this space by injecting between the inner ring
shoulder and the retainer (cage) inner diameter. Monitor the scale reading to insure that the proper amount
of grease is being added. Be sure to distribute the grease approximately equally between all ball spaces.
Continue to inject grease into the ball row until the bearing weighs 481 grams. Pick up the bearing, hold the
inner ring, and rotate the outer ring slowly several turns to distribute the grease.
9.8 Place bearing in a clean plastic bag, mark the clutch S/N on the bag, and store in a clean, dry area.
Reinstall into the clutch within 24 hours to minimize the possibility of contamination.
10. CLUTCH ASSEMBLY PROCEDURES
CAUTION
Remove plastic caps (P/N VC-1000-16, VC-437-16, and VC-812-16)
prior to assembly operations cover open bores with a clean, lint free
CAUTION
ances as specified. Exercise extreme care to prevent dirt, dust or for-
eign objects from entering the clutch, with special attention to bear-
ings and bearing cavities. If any foreign objects dropped into the
clutch during assembly, stop assembly and find the particle before
continuing even if considerable disassembly is involved. If the clutch
is to be left for even a short period of time in a partially assembled
state, cover all openings.
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