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 146 of 775

TM 9-2350-311-10

Item

No.

34.2

Interval

During

Table 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES

FOR M109 SELF-PROPELLED HOWITZER - CONTINUED

Location

Item to Check/

Service

Driver’s Fixed

And Portable

Instrument

Panels

(LHR Engine

Model 7083-7391)

(Cont)

Crewmember

Procedure

DRIVER

f.

TRANSMISSION OIL TEMP gage (8) reads 220

to 240

o

F minimum, 300

o

F maximum.

g. TRANSMISSION OIL PRESSURE gage (9)

reads 10 psi to 45 psi (69 to 310 kPa) at fast

idle.

h. Tachometer (10) operates without unusual fluc-

tuation or noise.

i.

BATTERY gage (11) is in green (charging)

range.

j.

Press to test COOLANT indicator light (12) for

proper operation.

Never run completely out of fuel. Injectors re-

quire full return flow for cooling.

k. FUEL gage (13) indicates fuel quantity

available in each fuel tank. Use FUEL GAGE

control switch (14) to select fuel tank.

I.

NBC indicator light (15) lights when NBC power

switch (16) (M109A4/M109A5) is turned to ON

position.

NOTE

M109A4/M109A5 configuration shown.

Not Fully Mission

Capable If:

TRANSMISSION

OIL TEMP gage

(8) does not read

within limits.

TRANSMISSION

OIL PRESSURE

gage (9) does not

read within limits.

BATTERY gage

(11) is inoperative

or does not read

within limits.

2-54.4

Change 2