TM 9-2350-247-10
PREVENTIVE MAINTENANCE CHECKS AND SERVICES — Continued
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WELDS
Look for loose or chipped paint, rust, or gaps where parts are welded together. If you find a bad weld, report it to unit
maintenance.
ELECTRONIC WIRING AND CONNECTIONS
Look for cracked or broken wires, bare wires, and loose or broken connectors. Tighten loose connectors and make sure the
wires are in good shape. If cracked or broken wires, bare wires, and/or broken connectors are found, report it to unit
maintenance.
HOSES AND FLUID LINES
While doing your PMCS, look for wear, damage, and leaks in all hoses and fluid lines. Make sure clamps and fittings are
tight. Wet spots mean leaks. A stain around a fitting or connector can mean a leak. Look for these telltale signs. If a leak
comes from a loose fitting or connector, tighten it. If a hose or line appears broken or worn out, report it to unit maintenance.
MOUNTED ACCESSORIES
Inspect that mounted accessories are secure and in place before you begin to operate your carrier.
FLUID LEAKS
CAUTION
Class III leaks may cause equipment to become damaged. Do not operate equipment with Class
III leaks. Report Class III leaks to your supervisor or to unit maintenance as soon as possible.
You need to know how fluid leaks affect your carrier. The following are definitions of the types or “classes” of leaks. You
must know them to determine the status of your carrier. Learn them. Become familiar with each kind of leak and what each
look like. Remember, when in doubt, NOTIFY UNIT MAINTENANCE!
NOTE
You are allowed to operate equipment with minor leaks (Class I or II). How much fluid each
item or system being checked or inspected can hold must be considered. When in doubt, notify
unit maintenance. When operating equipment with Class I or II leaks, continue to check fluid
levels as required in your PMCS. Report Class III leaks to unit maintenance for corrective
action right away.
Any fuel leak will make the carrier NOT READY/AVAILABLE.
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 the item being checked/
inspected.
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