TM 9-2320-260-34-2
16-25. HOIST BEVEL GEARCASE REPAIR (M816) (Contd)
15.
Remove two plugs (11), three plugs (10), and plugs (16) and (20) from gearcase housing (12) and
input drive housing (15).
16.
Remove four screws (7), lockwashers (6), cover (5), shims (8), and gasket (9) from gearcase
housing (12). Discard lockwashers (6) and gasket (9).
17.
Using micrometer, measure and record thickness of shims (8). Discard shims (8).
18.
Remove four screws (13), lockwashers (14), input drive housing (1), gasket (17), and shims (18)
from gearcase housing (12). Discard lockwashers (14) and gasket (17).
19.
Using arbor press, press input shaft (1) and bearing (4) until bearing (4) clears gearcase
housing (12).
20.
Using micrometer, measure and record thickness of shims (18). Discard shims (18).
21.
Using mechanical puller, remove bearing (19) from input shaft (1).
22.
Remove bearing (4), bevel gear (3), and input shaft (1) from top of gearcase housing (12).
23.
Using mechanical puller, remove bearing (4) from input shaft (1).
NOTE
Tag gear and shaft for installation.
24.
Using arbor press, remove bevel gear (3) and woodruff key (2) from input shaft (1). Discard
woodruff key (2).
c. Cleaning and Inspection
1. For general cleaning instructions, refer to para. 2-8.
2. For general inspection instructions, refer to para. 2-9.
3. Inspect housing (21), gearcase housing (12), input shaft (1), and driveshaft (23) for cracks, bends,
breaks, and wear. Refer to table 16-14, Hoist Bevel Gearcase Wear Limits, for measurements.
Replace housing (21), gearcase housing (12), input shaft (1), and driveshaft (23), if damaged
or worn.
4. Inspect front and rear bearings (4) and (19), upper bearing (24), and lower bearing (22) for wear.
Refer to table 16-14, Hoist Gearcase Wear Limits, for measurements. Replace front and rear
bearings (4) and (19), upper bearing (24), and lower bearing (22), if worn.
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