Inspection.

(11) Remove retaining ring (28) from quill shaft

(3) Inspect quill shaft (10) for stripped or damaged

(10).

threads. Replace if damaged.

(12) Press out quill shaft (10), removing two bear-

(4) Clean and inspect bearing cups (47) in covers

ings (29 and 30) and two cups (31 and 32) when shaft is free.

(16 and 38) in accordance with TM 9-214. Remove and in-

stall new bearing cups if required.

(13) Remove and discard oil seal (33) from cover

(5) Inspect all parts for cracks, breaks, and other

(23).

signs of damage. Replace all damaged parts.

(14) Remove and discard oil seal (34) from quill mo-

c. Assembly.

tor flange (5).

(1) Install vent plug (42), pipe plug (41), and drain

(15) Remove and discard oil seal (35) from cover

plug (1) in gearbox housing (18).

(16).

(2) Install retaining ring (40) in gear housing (18).

Note: Gaskets on gearbox covers are Iaminated. Record thickness of

(3) Install cover (38) and new gasket (39) on hous-

gaskets after removing. Use the same thickness when installing gearbox

ing (18) using six screws (36) and new lockwashers (37).

covers.

(4) Insert quill shaft (10) from air motor side of

(16) Remove six screws (36) and lockwashers (37).

gear housing (18).

Remove cover (38) and gasket (39) from housing (18). Dis

(5) Turn gear housing (18) so that fan side is up.

card lockwashers and gasket.

(6) Install bearing cup (32), bearing (30). bearing

(17) Remove retaining ring (40) from housing (IX).

(29), and bearing cup (31) on quill shaft (10).

(18) Remove drain plug (1). pipe plug (41), and vent

(7) Install retaining ring (28).

plug (42) from housing (18).

(8) Install new oil seal (33) in cover (23).

(9) Install cover (23), new gasket (24), and fan

brackets (22) on gear housing (18) using four screws (20)

and new lockwashers (21).

(10) Install new oil seal (34) in quill motor flange

(5).

( 11) Install quill motor flange (5) and new gasket

(27) on gear motor housing (18) using four screws (25) and

new lockwashers (26).

(12) Install shaft (19) in gear housing (18).

(13) Install new oil seal (35) in cover (16).

(14) Install cover (16) and new gasket (17) on gear

b. Inspection.

housing (18) using six screws (14) and new lockwashers

(15). Snug two of the screws and then check end play on

Warning: Dry cleaning solvent P-D-680 is toxic and

shaft (19). Adjust thickness of shim (17) until there is no

flammable. Wear protective gloves and use in a well venti-

perceptible end play, then install and fully tighten screws

lated area. Avoid contact with skin, eyes, and clothes and

and lockwashers.

do not breathe vapors. Do not use near open flame or ex-

(15) Install fan (13) on quill shaft (10) using screw

cessive heat. The flash point is 100-138 degrees F (38-50

(11) and new lockwasher (12).

degrees C). If you become dizzy while using cleaning sol.

(16) Install fan cover (9) on fan brackets (22) using

vent, get fresh air immediately and get medical aid. If con-

four screws (7) and flatwashers (8).

tact with eyes is made, wash your eyes with water and get

medical aid immediately.

(17) Position gear housing (18) upright.

(18) Install key (6) in feed motor output shaft (49).

(1) Clean and inspect bearings (43) on shaft (10) in

accordance with TM 9-214. If replacement is required,

(19) Carefully position feed motor (4) for installa-

tion. Ensure (that key (6) on feed motor output shaft (49)

press out shaft or remove bearings using bearing puller.

properly engages keyway in quill shaft (10).

Press new bearings onto shaft.

(20) Secure feed motor (4) to quill motor flange (5)

(2) Inspect worm gear (44) for cracked, chipped, or

using four screws (2) and new lockwashers (3).

broken teeth. If replacement is required. press out shaft

(19) and remove bearings (43), spacer (45), worm gear. and

(21) Install feed motor and gearbox assembly (set

paragraph 7-16).

key (46). Install key, new worm gear. and spacer on shaft.

then press on two new bearings.

(12) Service gearbox (set LO 5-3820-239-12).