TM-9-2350-274-BD

M109/M110/M578 VEHICLES HOWITZER, MEDIUM, SELF-PROPELLED FULL-TRACKED

TECHNICAL MANUAL; OPERATORS, ORGANIZATIONAL DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

JANUARY 1984

TM-9-2350-274-BD - Page 136 of 219

TM

9-2350-274-BD

ARMAMENT AND FIRE CONTROL SYSTEM

10-9. MANUAL PUMP FLUID LOSS (M109 Only).

General Information:

A damaged reservoir will cause the hydraulic oil to escape. However, because of the check valves in the

system, once pressure is made, the system is independent of the reservoir. Oil contamination probability is

high. There are two manual pumps in the M 109 system, manual elevation hand pump, and the

equilibrator system hand pump.

Limitations:

None

Personnel/Time Required:

●

1-2 soldiers

●

15 minutes

Materials/Tools:

●

Hydraulic hose (optional).

●

Hydraulic line (optional).

●

Adjustable wrench.

●

Vicegrips.

●

Water pump pliers.

Procedural Steps:

1. Find and repair/correct the cause of the fluid loss.

2. Disconnect or cut the input line to the manual (hand) pump.

3. Put the input line into a can/container of hydraulic fluid as a substitute reservoir.

4. Record the BDAR action taken. When the mission is completed, as soon as practicable, repair the

vehicle using standard maintenance procedures.

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