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 211 of 590
TM 9-1240-401-34&P
5-22. COUNTER ASSEMBLY 7660610 MAINTENANCE INSTRUCTIONS
This task covers:
a. Removal b. Repair
c. Installation
INITIAL SET-UP
Tool Kit, Electronic System, Repair, Field Mainte-
nance (SC5180-95-CL-B29)
M117/M117A2 panoramic telescope removed
from howitzer (TM 9-2350-311-10/
Parts
TM 9-2350-314-10)
Adhesive (Item 2, appx B)
Gasket (Item 5, appx E)
Grease (Item 7, appx B)
Azimuth knob removed (ref. para 5-13)
Lockwashers (4) (Item 65, appx E)
Preformed packing (Item 34, appx E)
Plate for azimuth knob removed (ref. para 5-13)
Shims (4) (Item 48, appx E)
Gunner's aid knob removed (ref. para 5-13)
References
Correction counter cover removed (ref. para
TM 9-254
5-13)
a. Removal
1
2
3
4
5
Remove machine screw (1) and reset counter knob
(2).
Remove two machine screws (3), access cover (4),
and gasket (5) from lower housing (6). Remove
preformed packing (7) from access cover (4). Dis-
card preformed packing and gasket.
Remove two machine screws (8), two machine
screws (9), four lockwashers (10), and counter as-
sembly (11) from lower housing (6). Discard lock-
washers.
Remove four shims (12) from lower housing (6) or
the mating surface of counter assembty (11). Dis-
card shims.
Remove two headless straight pins (13) from lower
housing (6), only if damaged.
5-37
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