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 119 of 775

TM 9-2350-311-10

Item

No.

17

Interval

Before

Table 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES

FOR M109 SELF-PROPELLED HOWITZER - CONTINUED

Location

Item to Check/

Service

Replenisher

Accumulator

Assembly

Pressure (Cont)

Crewmember

Procedure

CHIEF OF SECTION

d. Depress cannon assembly to maximum depres-

sion. Loosen right-hand bleeder plug (9) to

bleed trapped air from rear of buffer assembly

(10). When air-free fluid flows, tighten right-hand

bleeder plug.

e. Elevate cannon assembly to +50 mils. Loosen

left-hand bleeder plug (11) to bleed trapped air

from front of buffer assembly (10). When air-free

fluid flows, tighten left-hand bleeder plug.

f.

Elevate cannon assembly to 180 mils; install

hose and open bleeder valve (12). When air-

free fluid flows from hose, tighten bleeder valve.

Remove hose and stow in oddment tray.

g. Check replenisher accumulator assembly (1)

pressure gage (2) for 17 to 24 psi (117 to 165

kPa).

h. If low, add hydraulic fluid (item 20, Appx D) to

correct operating range. If overfilled, drain.

i.

Rebleed system until all air is bled from replen-

isher accumulator assembly (1) and mount.

Check for fluid leaks.

Not Fully Mission

Capable If:

Class III leak

found.

2-33