6-41. POWER TAKE OFF COUPLING AND VIBRATION DAMPER (Continued).
Dry cleaning solvent, P-D-680, used to clean parts, is potentially dangerous to personnel and
property. Avoid r epeated or prolonged skin contact. Do not use near open flame or excessive
heat. Flash point of solvent is 100138 (3859 ).
Wear protective eye goggles when using compressed air.
Do not allow the rubber bonded vibration dampers and coupling and flange
assembly to remain in the dry cleaning solution or the rubber may be loosened.
They should be cleaned in dry cleaning solution and dried with compressed air
immediately after being cleaned.
Wash all parts with dry cleaning
solution P-D-680. Then dry with
a. Examine the clutch pilot ball
bearing (5) for corrosion or
pitting. Lubricate the bearing
with light engine oil. Then
while holding the bearing inner
race from turning, revolve the
outer race slowly by hand. Any
rough spot in the bearing is
cause for rejection.