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 183 of 775

TM 9-2350-311-10

Item

No.

75

Interval

Quar-

terly

Table 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES

FOR M109 SELF-PROPELLED HOWITZER

Location

Item to Check/

Service

Variable

Recoil

Assembly

(Cont)

Crewmember

Procedure

CHIEF OF SECTION

c.

Elevate cannon tube and check operation of

variable recoil assembly components.

d. Index arrows (9) should begin to separate be-

tween 600 mils and 800 mils. If arrows do not

separate, notify unit maintenance.

NOTE

M109A2/M109A3/M109A4 M185 cannon as-

sembly has one torque key groove. M109A5

M284 cannon assembly has two torque key

grooves.

e. Check for dirt/water accumulation and rust on

sector gears (10) and torque key groove (11).

f.

Lubricate sector gears (10) and torque key

groove (11) with grease (item 19, Appx D) or

grease (item 18, Appx D) and replace dust

shield (8) and variable recoil access cover (4).

Not Fully Mission

Capable If:

Arrows do not

separate.

Change 2 2-87