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 677 of 828

TM 9–2350–311–20–2

Change 2

18–9

3

From inside cab, reach between M145/M145A1 telescope mount (6) and roof of cab, and disconnect electri-

cal connector (7) located on upper left side of M145/M145A1 telescope mount.

NOTE

For ease of assembly, do not allow lower assembly of linkage assembly to rotate.

4

Remove linkage assembly (5) from M145/M145A1 telescope mount (6).

NOTE

Webbing strap must be used to help hold M145/M145A1 telescope mount in keyway until all cap

screws are removed.

5

Support M145/M145A1 telescope mount (6) with webbing strap (8) around M145/M145A1 telescope mount

and mounting plate (not shown). Loosen two cap screws (9) and two cap screws (9.1), but leave enough of

the threads holding to support M145/M145A1 telescope mount.

WARNING

M145/M145A1 telescope mount weighs 96 pounds (43.5 kg). The following steps require two per-

sonnel to prevent bodily injury or equipment damage.

6

Hold M145/M145A1 telescope mount (6) in mounting plate keyway (hidden) and remove two cap screws (9),

two cap screws (9.1), and four lockwashers (10). Discard lockwashers.

7

While securely holding M145/M145A1 telescope mount (6) in keyway of mounting plate (hidden), remove

webbing strap (8).

8

Carefully lower M145/M145A1 telescope mount (6) to floor of cab.

1

2

3

5

4

7

6

9

10

9.1

10

8