TM-9-2350-311-10

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

TECHNICAL MANUAL; OPERATOR’S MANUAL

NOVEMBER 1994

TM-9-2350-311-10 - Page 131 of 775

TM 9--2350--311--10

2--45

Table 2--1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES

FOR M109 SELF-PROPELLED HOWITZER — CONTINUED

Location

Item

No.

Not Fully Mission

Capable If:

Crewmember

Procedure

Item to Check/

Service

Interval

26

Before

M117/M117A2

Panoramic

Telescope (Cont)

GUNNER

d. Check that variable resistor knob (4) moves

freely and light goes from dim to bright and

bright to dim.

e. Check counters (5) to make sure viewing win-

dows are not broken and numbers are legible

and do not skip.

Counters skip.

f. Make sure mounting is secure.

Mounting is inse-

cure.

5

5

4