Section VI. TROUBLESHOOTING
Power Unit Troubleshooting. There are no troubleshooting procedures authorized at unit level for the power unit
end item. Troubleshooting procedures for the individual generator set and trailer are contained in their respective technical
manuals referenced below.
Generator Set Troubleshooting. Refer to TM 5-6115-457-12 or TM 5-6115-600-12, as applicable, for generator
set troubleshooting procedures.
Trailer Troubleshooting. Refer to TM 9-2330-247-14&P for troubleshooting procedures applicable to the trailer.
Section VII. RADIO INTERFERENCE SUPPRESSION
General Methods Used to Attain Proper Suppression. Essentially, suppression is attained by providing a low
resistance path to ground for stray currents. The methods used include shielding ignition and high-frequency wires,
grounding the frame with bonding straps, and using filtering systems.
Radio Interference Suppression Components. All component parts on the power unit end item, whose primary
or secondary function is radio interference suppression, are on the generator set. Refer to TM 5-6115-457-12 or TM 5-
6115-600-12, as applicable for location of radio interference suppression components.
Section VIII. MAINTENANCE OF POWER UNIT TRAILER
General. This section of the manual contains unit level maintenance procedures for components of the M353
trailer added when the trailer is used as part of the PU-495 power unit. These components are not covered in the overall
trailer maintenance manual. For all other unit maintenance procedures on the trailer, refer to TM 9-2330-247-14&P.
When power unit has been painted in camouflage, replacement parts must be painted to match authorized patterns and
colors as specified in TB 43-0147. Application of camouflage paint shall be done in accordance with MIL-C-53072.
Before performing any maintenance that requires climbing on or under trailer, set
trailer handbrakes and chock both wheels. Injury to personnel could result from
trailer suddenly rolling or tipping.
Accessory Stowage Chest Replacement. (See figure 4-5.) The accessory stowage chest and associated
bracket are mounted to the trailer in front of the generator. The chest and bracket are secured with the same hardware
and must be removed and installed as a unit.
Remove three screws (1, figure 4-5), three flat washers (2), and three nuts (3) securing accessory stowage chest
(4) to plate (5).
Remove two screws (6), two flat washers (7), and two nuts (8) securing accessory stowage chest (4) to bracket (9)
and separate chest and bracket.