ARMY TM 9-6115-670-14&P
3-1
CHAPTER 3
OPERATOR MAINTENANCE INSTRUCTIONS
Page
Section I.
Lubrication Instructions ............................................................................................... 3-1
3.1.
Lubrication Instructions................................................................................... 3-1
Section II.
Operator Troubleshooting ........................................................................................... 3-1
3.2.
General ........................................................................................................... 3-1
3.3.
Operator Troubleshooting Procedures............................................................ 3-1
Section III.
Operator Maintenance Procedures ............................................................................. 3-13
3.4.
APU Painting .................................................................................................. 3-13
3.5.
Oil Dipstick...................................................................................................... 3-14
3.6.
Engine Oil ....................................................................................................... 3-16
3.7.
Radiator Cap................................................................................................... 3-18
3.8.
Radiator .......................................................................................................... 3-20
Section I. LUBRICATION INSTRUCTIONS
3.1. LUBRICATION INSTRUCTIONS.
Lubrication instructions are in Appendix G of this technical manual (TM). All lubrication instructions are
mandatory.
Section II. OPERATOR TROUBLESHOOTING
3.2. GENERAL.
This section contains troubleshooting procedures to determine the probable cause of observed
equipment malfunctions. Branching logic trees are provided to isolate the faulty component and offer
corrective actions to eliminate the malfunction.
3.3. OPERATOR TROUBLESHOOTING PROCEDURES.
The following pages list common malfunctions that may occur during operation or maintenance of the
APU, followed by a troubleshooting procedure. Refer to the symptom index to locate the troubleshooting
procedure for the malfunction you observe. Each troubleshooting procedure consists of a branching logic
tree. Perform the test or inspection, and the recommended corrective action in the order listed in the
logic tree. If the malfunction is corrected by a specific corrective action, do not continue with any
remaining steps. If the corrective actions do not correct the malfunction, notify the next higher level of
maintenance.
NOTE
Refer to “Table 1-1. Differences Between Models.” for
differences between MEP-903A, MEP-903B, and MEP-
903C, which may not be depicted in the TM illustrations.
