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TM 55-1905-223-24-18-2
3-18. Replace Horizontal Gear Assembly.
This task covers:
a. Removal
b. Replacement
Equipment Condition
Tool kit, general mechanic's,
Remove motor as specified in
para. 2-18 .
Pressure piece
Remove double gear pump assembly as
P/N 2125-9806-000 (8071)
specified in para. 2-21 .
Bearing puller P/N 3375016
Arbor press, 4920-00-373-9376
Gear Assembly P/N 2125-4003-010
Warning Tags, Item 1, Appendix C
a. Release brake by turning handle (3, Figure 3-12) fully clockwise.
b. Remove oil drain screw (4) and drain oil.
c. Remove three screws (1) and remove revolution indicator housing (2).
Refer to Figure 3-13 for remaining removal procedures.
d. Loosen three machine screws (23) on worm wheel assembly (24). Hold clutch (6) down to prevent
worm wheel shaft (13) from turning.
e. Slide worm wheel (15) right to disengage from worm spindle (not shown).
f. Loosen threaded pin (1) and slide clutch driver (2) and clutch shoes (3) out of clutch drum (6) and off
worm wheel shaft.
g. Remove socket head screw (4) and flatwasher (5) from worm wheel shaft.
h. Install pressure piece on end of clutch drum (6) at motor end and screw in to force clutch drum off
worm wheel shaft.
i. Separate clutch drum from worm wheel shaft (13). Remove pressure piece.


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