TM-9-2320-285-24-1

TRUCK TRACTOR, YARD TYPE, 43,500 LB GVW, DED, 4X2, ARMY MODEL M878A1

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

OCTOBER 1985

TM-9-2320-285-24-1 - Page 406 of 987

TM 9-2320-285-24-1

2-34.

BATTERY SYSTEM MAINTENANCE

a.

Battery Cables and Batteries (cont).

STEP

LOCATION

ITEM

ACTION

REMARKS

BATTERY CHARGING (cont)

15

NOTE

(cont)

Make certain battery cell covers are installed before proceeding.

b.

Battery charger

Turn on

c.

Battery cell

a. Remove

Remove cell covers periodic-

covers

ally and check specific

gravity (step 9b) and

electrolyte level.

Add

distilled water to maintain

level 3/8 inch above plates

b. Install

16

Batteries

a.

Specific

Check

Check after two hours of

(15)

gravity

battery charging.

Use

hydrometer.

Battery is

considered fully charged

when the specific gravity

does not change.

If one or

more cells of the battery

has a specific gravity less

than 1.230 after prolonged

charging,

the battery is

defective and must be

replaced

b.

Battery charger

Turn off

Disconnect leads

c.

Battery box lid

Close and

Para 2-34b

secure

2-383