GENERAL PMCS PROCEDURES - TM-9-2320-303-24-10360

TM 9-2320-303-24-1

UNIT PREVENTIVE MAINTENANCE CHECKS AND

SERVICES (PMCS) INTRODUCTION - CONTINUED

0023 00

Oil filters will be changed when:

(1)

they are known to be contaminated or clogged,

(2)

at prescribed hardtime intervals.

Engine oil, and transmission fluid, must be sampled initially at 90 days of operation as prescribed by DA Pam 738-

750.

For equipment under manufacturer's warranty, hardtime oil service intervals shall be followed. Intervals shall be

shortened if lubricants are known to be contaminated or if operation is under adverse conditions (i.e., longer than

usual operating hours, extended idling periods, or extreme dust).

Dashed leader lines on illustrations related to lubrication indicate that lubrication is required on both sides of the

equipment.

GENERAL PMCS PROCEDURES

Always perform PMCS in the same order so it gets to be a habit. Once you've had some practice, you'll spot any-

thing wrong in a hurry. If any deficiency is discovered, perform the appropriate troubleshooting task in Chapter 2

of this manual. If any component or system is not serviceable, or if the given service does not correct the defi-

ciency, notify your supervisor.

Before performing preventive maintenance, read all the checks required for the applicable interval and prepare all

tools needed to make all checks. Have several clean rags handy. Perform ALL inspections at the applicable inter-

val.

(1)

Keep It Clean. Dirt, grease, oil, and debris get in the way and may cover up a serious problem. Clean as

you work and as needed. Use dry cleaning solvent on all metal surfaces. Use detergent and water when you

clean rubber, plastic, and painted surfaces.

(2)

Rust and Corrosion. Check metal parts for rust and corrosion. If any bare metal or corrosion exists, clean

and apply a light coat of lubricating oil. Report it to your supervisor.

(3)

Bolts, Nuts, and Screws. Check bolts, nuts, and screws for obvious looseness, missing, bent, or broken

condition. You can't try them all with a tool, but look for chipped paint, bare metal, or rust around bolt

heads. If you find one you think is loose, tighten it.

(4)

Welds. Look for loose or chipped paint, rust, or gaps where parts are welded together. If you find a bad

weld, report it to your supervisor.

(5)

Electric Wires and Connectors. Look for cracked or broken insulation, bare wires, and loose or broken

connectors. Tighten loose connectors and ensure that the wires are in good condition.

(6)

Hydraulic Hoses and Lines. Look for wear, damage, and signs of leaks. Ensure that clamps and fittings

are tight. Wet spots indicate leaks, but a stain around a fitting or connector can also mean a leak. If a leak

comes from a loose fitting or connector, tighten it. If something is broken or worn out, correct it if autho-

rized by the Maintenance Allocation Chart (WP 0316 00). If not authorized, notify your supervisor.

(7)

Fluid Leakage. It is necessary for you to know how fluid leakage affects the status of your truck. The fol-

lowing are definitions of the types/classes of leakage you need to know to be able to determine the status

of your truck. Learn and be familiar with them, and remember - when in doubt, notify your supervisor.

Leakage Definitions For PMCS

Class I

Seepage of fluid (as indicated by wetness or discoloration) not great enough to form drops.

Class II

Leakage of fluid great enough to form drops, but not enough to cause drops to drip from

item being checked/inspected.

Class III

Leakage of fluid great enough to form drops that fall from item being checked/inspected.

0023 00-2