TM 5-4310-381-13
SECTION V. TROUBLESHOOTING
3-12. GENERAL. This section contains troubleshooting procedures to be performed by organizational maintenance.
The two main areas of troubleshooting are the gas engine and air pump. Refer to TM 5-2805-257-14 for troubleshooting
instructions for the engine.
3-13. TROUBLESHOOTING TABLE. The following columns are used in the Troubleshooting Chart.
a. Malfunction. Malfunctions listed are the ones most likely to happen. Not all possible malfunctions can be forseen
and listed.
b. Test or Inspection. Tests or inspections are listed to help you find the cause of the malfunction. The tests that are
easiest to do are listed first. The tests that are hardest to do are listed last.
c. Corrective Action. Corrective actions are listed to help eliminate the malfunction. Where the corrective action is
too complicated to be listed in full detail, the paragraph number of the detailed procedure is given.
Table 3-3. Troubleshooting
Malfunction
Test or Inspection
Corrective Action
ENGINE
Refer to TM 5-2805-257-14 for troubleshooting instructions.
AIR PUMP
1. LOSS OF OIL.
Step 1.
Check for clogged oil in fill plug vent.
WARNING
Death or serious injury could occur if compressed air is directed against
the skin. Do not use compressed air for cleaning or drying unless the
pressure is/has been reduced to 30 psi (2.11 kgcm2) or less. When
working with compressed air always use chip guards, eye protection and
other personal protective equipment.
Clean vent in oil fill plug by removing plug and blowing through opening
with compressed air not to exceed 30 psi.
Step 2.
Check for loose gear cover bolts.
Tighten bolts. Refer to paragraph 3-19.
2. LACK OF AIR PRESSURE.
Step 1.
Check for clogged intake filter. Clean or replace as necessary. Refer to paragraph 3-17.
Step 2.
Check for defective or missing rubber packing seals on outlet tee fittings and hose fitting. Replace packing
seals as necessary. Refer to paragraph 3-16.
Step 3.
Check for clogged or defective inflating valves. Remove inflating valves and replace with adaptor. If air
pressure increases, repair or replace defective inflating valves. Refer to paragraph 3-15.
Step 4.
Check safety valve for leakage. Replace if defective. Refer to paragraph 3-16.
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