TM-9-1240-401-34-P
TELESCOPE MOUNT M146: M118A2 AND M118A3; TELESCOPE MOUNT M145: M145A1; PANORAMIC TELESCOPE: M117 AND M117A2; FIRE CONTROL QUADRANT: M15; PERISCOPE: M42
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
JULY 1993
TM-9-1240-401-34-P - Page 75 of 590
TM 9-1240-401-34&P
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4
5
6
7
8
9
10
11
Remove spring washer (11) and
two
ratchets (12)
from worm shaft (9).
Scribe a reference mark on knob (13) and worm
shaft (9).
Support knob (13) with a V-block and drive out ta-
pered pin (14). Remove knob (13) from end of
worm shaft (9).
Remove setscrew (15) from worm shaft housing
(16).
Remove bushing (17) from worm shaft housing
(16).
Remove preformed packing (18) from bushing (17).
Discard preformed packing.
Remove worm shaft (9) from worm shaft housing
(16).
Remove two preformed packings (19 and 20) from
worm shaft (9). Discard preformed packing.
Remove preformed packing (21) from worm shaft
housing (16). Discard preformed packing.
c. Repair
1 Remove corrosion, grease, and dirt from all parts.
Refer to TM 9-254 for cleaning instructions.
2 Visually inspect for missing or damaged parts.
3 Repair or replace parts in accordance with author-
ized parts listed in appendix D.
3-17
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