TM-9-2350-311-20-1

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS

AUGUST 1994

TM-9-2350-311-20-1 - Page 721 of 1275

TM 9-2350-311 -20-1

8-28 BATTERIES

This task covers:

a. Battery Specific Gravity Check

b. Removal

c. Installation

Tools

Lockwashers (2) (item 87, Appx G)

General mechanic’s tool kit (item 64, Appx H)

Lockwashers (8) (item 96, Appx G)

Duo-tester (item 18, Appx H)

References

Matenals/Parts

TM 9-6140-200-14

Distilled water (item 66, Appx D)

Lockwashers (4) (item 77, Appx G)

Battery compartment access doors open (para 11-6)

Equipment Conditions

a. Battery Specific Gravity Checks

WARNING

• Battery gases can explode. Do not smoke or allow sparks or open flames near

batteries. Wear safety glasses or goggles when checking batteries. Failure to

follow this procedure could cause serious injury or death.

• When working on batteries, wear eye protection and remove all jewelry, dog tags,

and metal items to avoid electrical shock and burns.

●

Sulfuric acid contained in batteries can cause serious burns. If battery corrosion or

electrolyte makes contact, take immediate action to stop the burning effects.

When removing batteries, always disconnect ground cables first to prevent damage to

batteries.

1 Remove battery caps (1) from all cells.

NOTE

• Repeat steps 2 thru 5 for each cell.

●

Periodically calibrate the duo-tester with distilled water.

2 Swing plastic cover (2) back on duo-check coolant and battery tester. Clean measuring surface (3) and bottom

cover (4) with clean, soft cloth. Close cover.

8-76

CAUTION