3-12. BLOWER - MAINTENANCE INSTRUCTIONS (Cont).
Excessive backlash between the blower timing gears usually results in the rotor lobes rubbing
throughout their entire length. This usually is on the trailing (close clearance) side. Replace the
Inspect the blower inlet screen periodically, for an accumulation of dirt which, after pr longed operation,
may affect the air flow. Servicing of the screen consists of thoroughly washing it in fuel oil and
cleaning with a stiff brush until the screen is free of all dirt deposits. If broken wires are found in the
blower screen, replace the screen.
Check the lubricating oil connection between the blower and the blower drive support for excessive oil
leakage. If oil leakage exists, retighten or replace the fittings.
To correct any of the conditions cited in Items 1 through 6,the blower must be removed from the
engine and returned to Direct Support Maintenance.
Refer to para-
The fuel pump
does not have
to be removed.