GENERAL PMCS PROCEDURES - CONTINUED

TM 9-2320-312-10

PREVENTIVE MAINTENANCE CHECKS

AND SERVICES (PMCS) INTRODUCTION - CONTINUED

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GENERAL PMCS PROCEDURES - CONTINUED

WARNING

Dry cleaning solvent MIL-PRF-680 Type III is an environmentally compliant and low toxic material.

However, it may be irritating to the eyes and skin. The use of protective gloves and goggles is sug-

gested. Use in well-ventilated areas. Keep away from open flames and other sources of ignition.

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 (Item 3, WP 0019 00) on all metal surfaces. Use detergent (Item 5, WP

0019 00) and water when you clean rubber, plastic, and painted surfaces.

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 (Item 12, WP 0019 00). Report it to your supervisor.

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

tion. 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.

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.

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

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

Hoses and Fluid 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, report it to your supervisor.

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

ing are definitions of the types/classes of leakage that determine the status of your vehicle. Learn and be familiar

with them, and remember - when in doubt, notify your supervisor.

CAUTION

Operation is allowable with Class I and Class II leakage. WHEN IN DOUBT, NOTIFY YOUR SUPER-

VISOR. When operating with Class I or Class II leaks, check fluid levels more frequently. Class III

leaks must be reported immediately to your supervisor. Failure to do this will result in damage to vehicle

and/or components.

Leakage Definitions for PMCS

Class I

Leakage indicated by wetness or discoloration, but not great enough to form

drops.

Class II

Leakage great enough to form drops, but not enough to cause drops to drip

from the item being checked/inspected.

Class III

Leakage great enough to form drops that fall from the item being checked/

inspected.

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