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 74 of 590
TM 9-1240-401-34&P
3-15. WORMSHAFT ASSEMBLY MAINTENANCE INSTRUCTIONS
This task covers:
a. Removal b. Disassembly c. Repair
d. Assembly e. Installation
Tools
Drill bit No. 32 (0.116) (Item 14, appx F)
Drill, electric 1/2” (Item 12, appx F)
Tool Kit, Electronic System, Repair, Field Mainte-
nance (SC5180-95-CL-B29) 5180-01-168-0487
V-block (Item 25, appx F)
Preformed packing (Item 38, appx E)
Preformed packings (2) (Item 27, appx E)
Sealing compound (Item 13, appx B)
Shim (Item 54, appx E)
Shim (Item 55, appx E)
Shim (Item 56, appx E)
TM 9-254
Adhesive (Item 2, appx B)
Grease (Item 6, appx B)
Grease (Item 7, appx B)
Lockwashers (3) (Item 77, appx E)
Preformed packing (Item 28, appx E)
ment Condition
M118A2/M118A3 elbow telescope removed from
howitzer (TM 9-2350-311-10)
a.
Removal
1 Remove three cap screws (1) three Iockwashers
(2), wormshaft assembly (3), and shims (4,5 and
6). Discard lockwashers and shims.
2 Remove two headless straight pins (7), only if dam-
ged .
b. Disassembly
1 Scribe a reference mark on knob (8) and worm
shaft (9).
2 Support knob (8) with a V-block and drive out ta-
pered pin (10). Remove knob (8) from end of worm
shaft (9).
3-16
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