GENERAL PMCS PROCEDURES - TM-5-2410-237-230216

TM 5-2410-237-23

UNIT MAINTENANCE PREVENTIVE MAINTENANCE CHECKS

AND SERVICES (PMCS) INTRODUCTION - CONTINUED

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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 anything

wrong in a hurry. If any deficiency is discovered, perform the appropriate troubleshooting task in Chapter 2 of this man-

ual. 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 29, WP 0249 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 11, WP 0249 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 24, WP 0249 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'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.

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 0248 00). If not authorized, notify your supervisor.

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

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

machine. 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.

CAUTION

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

SOR. 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 compo-

nents.

END OF WORK PACKAGE

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