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 TM 55-1905-220-14-5
3-68. BLOWER - MAINTENANCE INSTRUCTIONS (Cont).
LOCATION
ITEM
ACTION
REMARKS
INSPECTION (Cont)
c.
Blower
A worn blower drive, re-
To correct any
drive
suiting in a rattling
of the above
noise inside the blower,
conditions, re-
may be detected by gras-
move the blower
ping the top rotor firmly
from the engine
and attempting to rotate
and replace it.
it. Rotors may move from
3/8" to 5/8", measured at
the lobe crown, with a
springing action. When
released, the rotors
should move back at least
1/4". If the rotors can-
not be moved as directed
above, or if the rotors
move too freely, inspect
the flexible blower drive
coupling and replace it if
necessary.
3-1221
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