PREVENTIVE MAINTENANCE CHECKS AND SERVICES - CONTINUED

TM9-2320-270-20-1

PREVENTIVE MAINTENANCE CHECKS AND SERVICES - CONTINUED

A ANNUALLY

S SEMIANNUALLY

ITEM

INTERVAL

TO BE

ITEM

PROCEDURE

INSPECTED

NO.

a. Inspect fifth wheel for damage and security.

Fifth Wheel

Torque loose fifth wheel mounting bolts as follows:

Torque 5/8-1 1 grade 8, fifth wheel mounting bolt to

210 ft-lb (285 Nm) and 3/4-10 grade 8, fifth

wheel mounting to 375 ft-lb (509 Nm). If fifth

wheel is damaged, notify Direct Support

Maintenance.

b. Check for full oscillation of fifth wheel and

engagement of locking jaws. Adjust oscillator lock

outs if required (page 4-1064). If locking jaws

require adjustment, notify Direct Support Main-

tenance.

c. Lubricate fifth wheel (LO 9-2320-270-12).

a. Inspect towing pintle for damage. Replace

Towing Pintle

damaged towing pintle (page 4-1045).

b. Lubricate towing pintle (LO 9-2320-270-12).

Inspect front and rear glad hand seals and con-

Towing Glad

nectors for damage. Replace damaged glad hand

Hands Front

or seals (page 4-838).

and Rear

a. Inspect battery box, latches, and cover.

Battery Box

Replace damaged parts (page 4-466).

and Cables

b. Open battery box, check specific gravity of

fluid in batteries using hydromotor. Normal reading

should be between 1.225 and 1.280 with less than

25 point spread between highest and lowest read-

ings. Replace unserviceable battery (page 4-462).

c. Inspect battery cables for damage and

security. Tighten loose battery clamps. Replace

damaged cables (page 4-446), close battery box,

and secure latches.

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