ARMY TM 9-6115-644-10
AIR FORCE TO 35C2-3-446-11
MARINE CORPS TM 09249A/09246A-10/1
Table 2-3. Operator Preventive Maintenance Checks and Services
If the equipment must be kept in continuous operation, check and service only those items that can be checked
and serviced without disturbing operation. Make the complete checks and services when the equipment can
be shut down.
The generator set can be operated continuously at any load from no load up to and including rated load;
however, at light loads (less than 25% of set rating) an oily residue (unburned fuel oil) may occasionally be
noticed in the exhaust system outlet and around connection joints in the exhaust system. This residue is caused
by the inability of the fuel injection system to consistently meter the small amount of fuel required to operate
at these low load levels and is not a defect in the fuel system. The oily residue could affect engine performance
and create a cosmetic problem on and around the generator set. Operation at rated load will burn off this oily
residue. The length of time required at rated load depends on the amount of residue. The muffler may also need
to be removed and cleaned if excessive build up occurs. This oily residue can be prevented by increasing the
electrical load on the set.
B - BEFORE
D - DURING
Check for and have
repaired or adjusted
Check doors, panels, hinges, and latches
for damaged, loose or corroded items.
Inspect air intake and exhaust grills for
Check to ensure identification plates are
Inspect skid base for cracks or
Ensure that acoustical materials are free
of damage or not missing.
Skid base is cracked
or shows signs of
2-10 Change 2