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 154 of 828

TM 9–2350–311–20–2

3–43

c.

CAB TRAVERSING SYSTEM — CONTINUED

(4)

CAB WILL NOT TRAVERSE FREELY IN MAN-

UAL OR POWER MODES.

INITIAL SETUP

Tools

Artillery and turret mechanic’s tool kit

(SC 5180–95–CL–A12)

Equipment Condition

Vehicle MASTER switch to OFF (TM 9–2350–311–10)

CAB POWER switch to OFF (TM 9–2350–311–10)

TRAVERSE CONTROL switch in MANUAL position

(TM 9–2350–311–10)

CONTINUED ON NEXT PAGE

Clear obstructions.

yes

no

1.

Check vehicle interior and exterior for

obstructions that may impede traversing.

2.

Check for dirt, rust, or other obstructions on main

drive gears or cab ring gear.

Are obstructions present?

Release and verify that

malfunction is corrected.

Check cannon travel lock and traverse lock.

Are cannon travel lock and traverse lock fully released?

A

yes

no

B

NOTE

All attempts to traverse should be

made manually only.