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 115 of 775

TM 9–2350–311–10

2–29

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

16

Before

Hydraulic

Filter

Assemblies

(M109A4/M109A5)

CHIEF OF SECTION

Before firing, check bypass indicator (1) on hydrau-

lic filter assembly (2). Filters are clean and

functioning if red button is flush with bypass

indicator. If red button is protruding from bypass

indicator, hydraulic filter assemblies are dirty and

hydraulic fluid is bypassing them.

Hydraulic fluid is

bypassing the

hydraulic filter

assemblies (2).

1

2