TM 9-6115-669-13&P
2.5.5 Leakage Definitions. You must know how fluid leakage affects 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. When in doubt, notify
your supervisor.
Leakage
Class
Leakage Definition
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 the item being checked/inspected.
Class III
Leakage of fluid great enough to form drops that fall from the item being checked/in-
spected.
2.5.6 Operation of Generator Set 150 kW with Minor Leaks.
CAUTION
Equipment operation is allowable with minor leakage (Class I or ID of
any fluid except fuel. Fluid capacity must be considered before deciding
to continue operation of the equipment with minor leaks. When
operating with Class I or II leaks, fluid level must be checked more often
than required by the PMCS table. Parts without fluid will stop working
and/or cause equipment damage.
a.
Consider the equipment’s capacity for the fluid that is leaking. If the capacity is small, the
fluid level may soon become too low for continued operation. If in doubt, notify, your supervisor.
b.
Check the fluid level more often than required in the PMCS table. Add fluid as needed.
2.5.7 Corrosion Prevention and Control (CPC). CPC of Army material is of continuing
concern. It is important that any corrosion problems with the equipment be reported so that the
problem can be corrected and improvements can be made to prevent the problem in future items.
While corrosion is typically associated with rusting of metals, it can also include deterioration of
other materials, such as rubber and plastic. Unusual cracking, softening, swelling, or breaking of
these materials may be a corrosion problem. If a corrosion problem is identified, it can be reported
using Standard Form 368, Product Quality Deficiency Report. Use of key words such as “corrosion,”
“rust,” “deterioration,” or “cracking” will ensure that the information is identified as a CPC problem.
The form should be submitted to the address specified in DA Pam 738-750.
2.5.8 Order in Which PMCS Will be Done. Figure 2-10 shows the order in which you are to
perform your PMCS. The number callouts on figure 2-10 correspond to the numbers in the Item No.
column of table 2-9, for ‘Before” PMCS.
2 - 2 4
