TM 10-4610-240-24
TM 08580C-24/2
TO 40W4-13-22
2-7. PREVENTIVE MAINTENANCE CHECKS AND SERVICES - continued.
(g) Check hoses and fluid lines 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, either correct It
or report it to Direct Support Maintenance (refer to the Maintenance Allocation Chart, Appendix B)
(2) 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 Leakage definitions for unit PMCS
CAUTION
When operating with Class I or Class II leaks, continue to check fluid levels in addition to that
required in PMCS. Parts without fluid will stop working and/or cause damage to the parts
NOTE
Equipment operation is allowable with minor leakage (Class I or II) Consideration must be
given to the fluid capacity in the item being checked/inspected When In doubt, notify your
supervisor
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
(3) The specific PMCS procedures do not say "adjust if necessary" or "replace if necessary " It is understood
that whenever inspection shows the need for adjustment, repairs, or replacement, that work will be done
(4) Cleaning instructions are in the maintenance sections for those Items being inspected
(5) Unit maintenance services are those general procedures listed below, unless approval is given for other
services
(a) Adjust. Make all adjustments by following the procedures given In this manual or in bulletins
(b) Clean. items by following the general cleaning procedures given in the applicable maintenance
paragraphs
2-4
