LEAKAGE DEFINITIONS FOR OPERATOR/CREW PMCS

TM 10-3990-203-13&P

b. Bolts, nuts and screws: Check that they are not loose, missing, bent

or broken. You can't try them all with a tool, of course, but look for chipped

paint, bare metal or rust around bolt heads. Tighten bolts, nuts and screws

you find loose. Report it to organizational maintenance if you can't tighten

it.

c. Welds: Look for loose or chipped paint, rust or gaps where parts are

welded together. If you find a bad weld, report it to organizational maint-

enance.

d. Hoses and fluid lines: Look for wear, damage and leaks. Make sure

clamps and fittings are tight. Wet spots show leaks, of course, but a stain around

a fitting or connector can 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

organizational maintenance (refer to Maintenance Allocation Chart).

e. Ramp must be on level ground in order to get correct fluid level

measurement.

10. It is necessary for you to know how fluid leaks affect the status of your

equipment. The following are definitions of the types/classes of leakage you

need to know to be able to determine the status of your equipment. Learn and

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

LEAKAGE DEFINITIONS FOR OPERATOR/CREW PMCS

Seepage of fluid (as indicated by wetness or discoloration)

Class I

not great enough to form drops.

Leakage of fluid great enough to form drops, but not enough

Class II

to cause drops to drip from the item being checked/inspected.

Leakage of fluid great enough to form drops that fall from

Class III

the item being checked/inspected.

CAUTION

Equipment operation is allowable with minor leakages (Class I or II).

Of course, consideration must be given to the fluid capacity in the

item/system being checked/inspected. When operating with Class I or

II leaks, continue to check fluid levels as required on your PMCS.

Class 111 leaks should be reported to your supervisor or Organiza-

tional Maintenance.

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