GENERAL PMCS PROCEDURES

TM 10-3930-660-24-1

PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)

INTRODUCTION - CONTINUED

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GENERAL LUBRICATION PROCEDURES - CONTINUED

at prescribed hardtime intervals.

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

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

ating hours, extended idling periods or extreme dust).

GENERAL PMCS PROCEDURES

Always perform PMCS in the same order so it gets to be a habit. Once you have had some practice, you will 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 deficiency, 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 (Item 40, WP 0324 00) handy. Perform ALL inspections at the appli-

cable interval.

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 detergent (Item 17, WP 0324 00) and water when you clean.

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 31, WP 0324 00). Report it to your supervisor.

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

You can not 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.

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 authorized by the Maintenance Allo-

cation Chart (WP 0323 00). If not authorized, notify your supervisor.

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

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

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

Leakage Definitions for PMCS

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

(b) Class II. Leakage of fluid great enough to form drops, but not enough to cause drops to drip from item

being checked/inspected.

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