3-19. LEVEL ASSEMBLY MAINTENANCE INSTRUCTIONS (M118A2) - continued
b. Disassembly
1
Remove incandescent lamp (8) from mount (9).
Remove holder (10) from mount (9).
2
3
Remove telescope subassembly (11) and sleeve
spacer (12).
Remove threaded ring (13) from mount (9).
4
5
Remove holder (14), cam (15), and level (16).
Remove two cap screws (17), two Iockwashers
6
(18), and mirror (19). Discard Iockwashers.
7
Remove two headless straight pins (20 and 21),
only if damaged.
Remove two cap screws (22) and light conductor
8
(23).
9
Using 1-25/32 and 1-51/64 inch tubular spanner
wrench, remove retainer (24), shim (25), and win-
dow (26). Discard shim.
10
Remove preformed packing (27) from level mount
(9) and discard.
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.
d. Assembly
1 Apply sealing compound (item 13, appx B) to the
surface of mount (9) where window (26) is seated.
Install window (26) and apply additional sealing
compound around the window. Install new shim
(25) and using 1-25/32 and 1-51/64 inch tubular
spanner wrench, install retainer (24).
