ARMY
TM 5-6115-612-34
NAVY AG-320B0-MME-00
8-5. OVERHAUL OF GEARBOX ASSEMBLY.
b. Disassembly.
(13) Remove bolt (13, Figure 8-20), washer (14)
and washers (15) securing loop clamp (16) and tube
assembly (17) to gearbox housing.
(14) Remove bolts (18) and washers (19) that
secure tube fitting (19.1) to gearbox Remove and discard
preformed packing (20, 20 1, 20.2)
(15) Remove bolt (21), washer (22), sleeve
spacer (23), and washer (23 1) securing loop clamp (24)
and tube assembly (25)
(16) Remove capscrews (26) and washers (27)
securing tube assembly stackup (28). The tube
assembly stackup consists of tube assembly (25),
preformed packing (29), tube assembly (30), preformed
packing (31), tube assembly (31 1), preformed packing
(32), plate spacer (33), preformed packing (34), and tube
assembly (35). Remove and discard all preformed
packings
(17) Remove bolts (36) and washers (37).
(18) Insert bolts (36) In jackscrew holes in seal
retainer (38)Turn jackscrews to remove seal retainer.
(19) Using arbor press, remove seal (39).
Remove preformed packing (40), shim (41), and spring
washer (42). Discard packing and seal.
CAUTION
Shoulder shaft nut (45) has left-handed threads. Loosen
in a clockwise direction to avoid damage to equipment
(20) Secure generator shoulder shaft (43) in
holding fixture, fabricated tool (FT-21322, Figure 8-21)
Bend down tabs on key washer (44). Using fabricated
tool (FT-21369), remove nut (45) from shaft Remove
from holding fixture. Discard key washer.
(21) Place
gearbox
assembly
on
gearbox
support base, fabricated tool FT-21589 Place gearbox
assembly plus fixture on arbor press. Using bearing
removal tool, fabricated tool FT-21325, press generator
shouldered shaft (43) through bearing (46) and output
spur gear (47) Remove assembly from arbor press See
Figure 8-22.
(22) Remove
bearing
(48)
from
generator
shouldered shaft (43) using bearing puller Dis-card
bearing/
(23) Remove retaining ring (49) from generator
shouldered shaft.
(24) Remove output spur gear (47) and bearing
(46) from gearbox housing Discard bearing.
(25) Remove bolts (50) and washers (51)
securing bearing retainer (52) to gearbox housing (59).
Remove bearing retainer (52), pinion spur gear assembly
(53), spring washer (54), and shim (55)
(26) Using puller set, remove bearings (56) and
(57) from pinion spur gear (58) Discard bearings
.
Change 4 8-47
