Chapter 1. PREVENTIVE MAINTENANCE - TM-9-2320-209-20-10012

TM 9-2320-209-20-1

CHAPTER 1

PREVENTIVE MAINTENANCE

1-1.

GENERAL. Preventive

maintenance checks and services (PMCS) are done to find and to fix problems before

they can cause major damage

to the vehicle. These checks and services are done by organizational maintenance

personnel every six months or

6,000 miles, whichever comes first. To save time and make sure that all items are

checked, do the PMCS in the

order given in the tables. Write down any problems on the proper forms. Refer to

TM 38-750.

1-2.

PROCE DURES FOR SERVICES AND INSPECTIONS. The following general procedures are for organizational

maintenance PMCS and for all inspections. They are just as important as the specific procedures. In addition to the

specific procedures, any of these general procedures that apply to PMCS items will be done automatically.

Check to see if items are in good condition, properly assembled or stowed, not leaking, loose, or

excessively worn, and properly lubricated.

(1)

Check that items are in good condition is usually a visual check to see if the items are safe and

usable. Good condition means not bent or twisted, not chafed or burred, not broken or cracked, not bare or frayed, not

dented or collapsed, not torn or cut, not rusted or rotted, and not leaking.

(2)

Check that items are properly assembled or stowed usually is a visual inspection also. See if the

items are in normal positions on the vehicle, and if all parts are present.

(3)

Excessively worn means worn beyond usable limits and likely to fail before the next scheduled

inspection. This includes too much play (lash or lost motion) in linkages and mating parts. This also includes unreadable

markings, data and caution plates, and other printed matter.

The specific PMCS procedures do not say "adjust if necessary" or "replace if necessary." It is understood

that whenever inspection shows the need for adjustments, repairs, or replacements that work will be done.

Any special cleaning instructions for certain items are in the maintenance sections for those items.

General cleaning instructions are as follows:

WARNING

Dry cleaning solvent is flammable. Do not use near an open flame. Keep a fire

extinguisher nearby when solvent is used. Use only in well-ventilated places.

Failure to do this may result in injury to personnel and damage to equipment.

(1)

Use dry cleaning solvent, Type II (SD-2), Fed. Spec P-D-680 to clean or wash grease or oil from

all metal parts.

(2)

A solution of one part grease cleaning compound to four parts of dry cleaning solvent may be

used for cleaning grease and oil from engine blocks, engine compartments, and other parts.

(3)

After cleaning, rinse and dry parts well. Coat all polished metal surfaces with a light grade of oil

to stop rust.

(4)

When puttin g in new parts, take off any rust-preventive compound or protective grease.

For

those parts needing lubrication, refer to LO 9-2320-209-12/1.

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