Table 1. Unit Preventive Maintenance Checks and Services (PMCS) for the M878A2 Yard Tractor cont'd

TM 9-2320-312-24-1

Table 1. Unit Preventive Maintenance Checks and Services (PMCS)

for the M878A2 Yard Tractor - Continued.

LOCATION

EQUIPMENT NOT

ITEM TO

ITEM

READY/AVAILABLE

CHECK/

NO.

INTERVAL

PROCEDURES

IF:

SERVICE

Semiannual

Batteries and

Capacitor(s)

WARNING

To avoid injury, eye protection and acid-resistant gloves must be worn

when working around batteries. Do not smoke, use open flame, make

sparks or create other ignition sources around batteries. If a battery is giv-

ing off gases, it can explode and cause injury to personnel. Remove all jew-

elry such as rings, ID tags, watches, and bracelets. If jewelry or a tool

contacts a battery terminal, a direct short will result in instant heating, dam-

age to equipment, and injury to personnel.

To avoid injury, eye protection, protective clothing, and gloves must be

worn when working around capacitors. Capacitors contain an electrolyte

that is a potassium hydroxide solution. Potassium hydroxide is highly cor-

rosive and can cause serious burns. If capacitor case becomes cracked,

leaking electrolyte can result in fumes that are hazardous to inhale. If elec-

trolyte makes contact with skin, eyes or clothing, take immediate action to

stop the corrosive burning effects. Failure to follow these procedures may

result in death or serious injury to personnel.

Remove all jewelry such as rings, ID tags, watches, and bracelets, when

working around capacitors. If jewelry or a tool contacts a capacitor termi-

nal, a direct short may result, causing instant heating and electric shock at

the point of short circuit. Damage to equipment and injury to personnel

could result.

CAUTION

To reduce battery damage, do not remove batteries from battery box unless

battery box is corroded (greenish/white powder) or during battery replace-

ment. Do not jerk or pull on battery cables during inspection.

a. Inspect battery box for evidence of corro-

sion. If box is corroded, remove batteries

and capacitor(s) (WP 0114 00 and WP

0119 00). Clean battery box to remove all

corrosion.

b. Check batteries for damaged or missing b. Battery is damaged or leaking.

filler caps.

c. Check for damaged terminal posts.

d. Check electrolyte level in batteries (TM 9-

6140-200-14).

e. Check and record specific gravity of each

cell in all batteries (TM 9-6140-200-14).

f. Inspect capacitor(s) for damaged terminal f. Case is cracked or leaking.

posts, corrosion, and cracked or leaking

case.

g. Check battery cables for looseness, frays,

splits, and breaks. Replace any damaged

cable (WP 0115 00).

0009 00-15