TM 10-4520-262-12&P 0014 00
Leakage may present a fire and/or health hazard. No leakage of any type is permitted
within the heater. No leakage of any type is permitted within the area or compartment
Heater operation is allowed if:
Class I or Class II leaks occur in fuel supply lines external to the heater.
And, such leakage does not present a fire or health hazard.
Class III leaks shall be reported immediately to your supervisor.
CLASS I - Slight seepage of fuel, but not great enough to form a drop. Indicated by slight wetness or
CLASS II - Seepage of fuel great enough to form drops but not great enough to cause drops to drip from
the item being checked.
CLASS III - Leakage of fuel great enough to form drops that fall from the item being checked.
Unit Preventive Maintenance Checks and Services.
If the equipment must be kept in continuous operation, do only the procedures that can
be. Done without disturbing operation. Make complete checks and services when the
equipment is shut down.
Table 1. Operator Preventive Maintenance Checks and Services
Not Fully Mission
All necessary PMCS may be
accomplished by the operator.
END OF WORK PACKAGE