TM 9-1240-401-34&P
Adjust cell (18) until bubble of pitch level(19) is
6
centered. Hold cell (18) and tighten threaded ring
(17).
7
With M145/M145A1 telescope mount setup as di-
rected, place 1/2- by 3/4- by 6-inch parallel baron
bearing plate in telescope socket (35) so that it is
parallel to main shaft (36).
Place zeroed M1A1 gunner's quadrant (37) on par-
8
allel bar.
9
Adjust cross-level mechanism knob (39) until M1A1
gunner's quadrant (37) level (38) bubble is cen-
tered.
Apply sealing compound (item 15, appx B) to
10
threaded ring (4) and install into bracket (7).
11
Adjust cell (5) until bubble of cross-level (6) is cen-
tered. Hold cell (5) and tighten threaded ring (4).
I
4-16. QUADRANT SUPPORT ASSEMBLY MAINTENANCE INSTRUCTIONS
I
c. Assembly d. Adjustment
a. Disassembly b. Repair
This task covers:
ITIAL SET-UP
.
Tools and Special Tools
C-clamp (Item 10, appx F)
Lockwasher (Item 63, appx E)
Lockwashers (4) (Item 64, appx E)
Eccentric tool, fabricated (fig C-3, appx C)
Lockwashers (2) (Item 66, appx E)
Sealing compound (Item 13, appx B)
Tool Kit, Electronic System, Repair, Field Main-
tenance (SC5180-95-CL-B29)
dition
M145/M145A1 telescope mount installed on
Tubular spanner wrench 11/1 6 and 45/64 inch
howitzer
(Item 26, appx F)
4-25
