TB 1-1520-238-30-19
WARNING
Do not attempt to clean annular ball bearing (25) internal compo-
nents.
CAUTION
Do not use cleaning solvents during this cleaning process as they
may contaminate bearing grease, causing the grease to lose its lubri-
cating properties.
CAUTION
Extreme care must be taken when handling and cleaning the annular
ball bearing (25). Follow the cleaning requirements of Section 8 when
cleaning the bearing.
7.19 Perform preliminary inspection of annular ball bearing (25) to look for dried, caked grease on bearing
faces; between the bearing cage and inner ring; or between bearing balls. If any dried or caked grease is
found, reject the bearing. If the inspection determines that the bearing must be replaced, tag the bearing with
an unserviceable tag, place bearing in a plastic bag, and mark the bearing P/N, clutch S/N, and clutch TSO
on it. Provide the bearing to a Boeing CFSR, AMCOM LAR, or put the bearing in a shipping container for
any clutch being returned.
7.20 If no dried, caked grease is found, clean annular ball bearing (25) by carefully wiping off excess grease
from outer portions of raceway. Hold bearing face-down to insure debris does not fall into bearing races. Do
not attempt to remove grease from lubrication ports along the bearing's outer diameter. Remove any moist
grease found between the bearing cage and inner ring with a clean, dry lint-free cloth, taking care not to push
old grease into the bearing.
7.21 Perform detailed inspection of annular ball bearing IAW paragraph 8.12. Seal bearings in a plastic bag
while awaiting detailed inspection to minimize contamination. Mark clutch serial number on bag.
NOTE
Good shop practices include the compilation of complete and accurate in-
spection records. It is suggested that a record of inspections and actions
accomplished be maintained in the event that such maintenance results are
required at a later date.
NOTE
Clutches being dispositioned as unserviceable shall be tagged and a thor-
ough notation of the reason for rejection shall be entered on the applicable
documentation.
NOTE
All micrometers, gages, indicators, scales other measuring and test equip-
ment shall be calibrated in accordance with the applicable Military Standard
or manufacturer's recommendations.
8.1 Visual Inspection Guidelines: A visual inspection involves viewing the part for general appearance in
an effort to locate conditions that cause or indicate abnormal wear.
8.2 Threaded parts: Inspect splined output adapter (19) shaft for stripped, galled or crossed threads - If any
of these conditions exist, reject clutch assembly, reassemble as needed to return clutch to supply for
disposition.
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