NOTE
(18) Remove drain plug (l), pipe plug (41), and vent
Scribe feed motor and quill motor flange to en-
plug (42) from housing (18).
sure proper reassembly.
(3) Remove four screws (2) and lockwashers (3) se-
curing feed motor (4) to quill motor flange (5). Remove
feed motor and key (6). Discard lockwashers.
(4) Remove four screws (7) and flatwashers (8).
Remove fan cover (9).
(5) Hold quill shaft (10) in place and remove screw
(11) and lockwasher (12) securing fan (13) to quill shaft.
Remove fan. Discard lockwasher.
NOTE
Gaskets on gearbox covers are laminated. Record
b. Inspection.
thickness of gaskets after removing. Use the same
thickness when installing gearbox covers.
WARNING
(6) Remove six screws (14) and lockwashers (15).
Dry cleaning solvent P-D-680 is toxic and flam-
Remove cover (16) and gasket (17) from housing (18). Dis-
mable. Wear protective gloves and use in a well
card lockwashers and gasket.
ventilated area. Avoid contact with shin, eyes, and
clothes and do not breathe vapors. Do not use
(7) Remove shaft (19) from housing (18).
near open flame or excessive heat. The flash
NOTE
point is 100-138 degrees F (38-50 degrees C). If
Gaskets on gearbox covers are laminated. Record
you become dizzy while using cleaning solvent,
thickness of gaskets after removing. Use the same
get fresh air immediately and get medical aid. If
thickness when installing gearbox covers.
contact with eyes is made, wash your eyes with
water and get medical aid immediately.
(8) Remove four screws (20) and lockwashers
(21).
Remove fan brackets (22), cover (23), and gasket (24)
from
(1) Clean and inspect bearings (43) on shaft (19) in
gear housing (18). Discard lockwashers and gasket.
accordance with TM 9-214. If replacement is required,
press out shaft or remove bearings using bearing puller.
(9) Remove four screws (25) and lockwashers
(26).
Press new bearings onto shaft.
Remove quill motor flange (5) and gasket (27) from
gear
housing (18). Discard lockwashers and gasket.
(2) Inspect worm gear (44) for cracked, chipped, or
broken teeth. If replacement is required, press out shaft
(10) Block gear housing (18) with fan end facing up.
(19) and remove bearings (43), spacer (45), worm gear, and
(11) Remove retaining ring (28) from quill shaft
key (46). Install key, new worm gear, and spacer on shaft,
(10).
then press on two new bearings.
(12) Press out quill shaft (10), removing two bear-
(3) Inspect quill shaft (10) for stripped or damaged
ings (29 and 30) and two cups (31 and 32) when shaft is free.
threads. Replace if damaged.
(13) Remove and discard oil seal (33) from cover
(4) Clean and inspect bearing cups (47) in covers
(23).
(16 and 38) in accordance with TM 9-214. Remove and in-
(14) Remove and discard oil seal (34) from quill mo-
stall new bearing cups if required.
tor flange (5).
(5) Inspect all parts for cracks, breaks, and other
(15) Remove and discard oil seal (35) from cover
signs of damage. Replace all damaged parts.
(16).
c. Assembly.
(1) Install vent plug (42), pipe plug (41), and drain
NOTE
plug (1) in gearbox housing (18).
Gaskets on gearbox covers are laminated. Record
thickness of gaskets after removing. Use the same
(2) Install retaining ring (40) in gear housing (18).
thickness when installing gearbox covers.
(3) Install cover (38) and new gasket (39) on hous-
ing (18) using six screws (36) and new lockwashers (37).
(16) Remove six screws (36) and lockwashers (37).
Remove cover (38) and gasket (39) from housing (18). Dis-
(4) Insert quill shaft (10) from air motor side of
card lockwashers and gasket.
gear housing (18).
(17) Remove retaining ring (40) from housing (18).
(5) Turn gear housing (18) so that fan side is up.
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