TM-9-2350-311-20-2

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS

DECEMBER 1993

TM-9-2350-311-20-2 - Page 548 of 828

TM 9–2350–311–20–2

12–6.2

Change 2

12–3 CUPOLA COVER, BODY, AND HANDLE — CONTINUED

NOTE

Perform step 5 for commander’s cupola with hook latch assembly or steps 5.1 through 5.3 for com-

mander’s cupola with knob latch assembly.

5

To disassemble cupola body, remove two cotter pins (16), two flat washers (17), two sleeve spacers (18),

straight pin (19), spring (20), and manual control lever (21) from latch bracket (22). Discard cotter pins.

5.1

Remove four cap screws (22.1), two cap screws (22.2), six lockwashers (22.3), latch assembly (22.4), and

adapter plate (22.5).

5.2

Remove four inserts (22.6) if necessary for replacement.

5.3

See para 14–3 for disassembly of knob latch assembly (22.4).

21

19

18

17

20

18

17

16

22

22.1

22.3

22.2

22.3

22.6

22.5

22.4