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 77 of 590
TM 9-1240-401-34&P
e. Installation
1 If two headless straight pins (7) were removed,
redrill using No. 32 (0.116) drill. Drill into housing
7/8 inch (22.23 mm) deep; ream for drive fit in
outer sleeve (22) and slip fit in worm shaft assem-
bly (3).
2 Install three new shims (4,5, and 6) as required to
obtain minimum backlash. Apply grease (item 6,
appx B) to teeth of worm shaft assembly (3) and
position over two headless straight pins (7). Secure
with three new Iockwashers (2) and three cap
screws (1).
3-16. COVER ASSEMBLY MAINTENANCE INSTRUCTIONS (M118A3)
This task covers:
a. Removal b. Disassembly c. Repair
d. Assembly e. Installation
INITIAL SET-UP
Tools
Sealing Compound (Item
1
3, appx B)
Shim (Item 49, appx E)
Tool Kit, Electronic System, Repair, Field Mainte-
nance (SC5180-95-CL-B29)
References
TM 9-254
TM 750-116
Equipment Conditio
n
I
Adhesive (Item 1, appx B)
Lockwashers (4) (Item 68, appx E)
M118A3 elbow telescope removal from howitzer
Preformed packing (Item 42, appx E)
(TM 9-2350-311-10)
a.
Removal
Remove cover assembly (1) from housing (2) by remov-
ing four machine screws (3) and four Iockwashers (4).
Discard lockwashers.
3-19
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