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 TM 55-1925-204-12
that may occur, nor all tests or inspection and corrective
4-7. Troubleshooting
actions. If a malfunction is not listed, or is not corrected by the
Probable malfunctions, with tests or inspections and corrective
listed corrective actions, notify Direct Support Maintenance.
actions are listed in table 4-3 below.
Table 4-3. Troubleshooting
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
Use table 3-3 for troubleshooting and expand by using these additional steps.
-01 GROUP-
1. BLUE SMOKE.
Step 1. Check for excessive cylinder wall lubrication.
Check and adjust force feed lubricator (para 4-16).
2. OVERHEATING.
Step 1. Check for excessive back pressure in exhaust system.
Check and repair exhaust silencer or pipes (para 4-15).
-04 GROUP-
1. BLACK OR GRAY SMOKE.
Step 1. Check for high exhaust back pressure.
Check muffler (para 5-23).
2. OVERHEATING.
Step 1. Check for back pressure in exhaust.
Check muffler (para 5-23).
Section VI. RADIO INTERFERENCE SUPPRESSION
The ventilating blower motors, pump motors, and electrical
4-8. General Methods Used to Attain Proper Suppression
generators have been suppressed with capacitors.
Essentially, suppression is attained by providing a low
resistance path to ground for stray currents. The methods used
include shielding the ignition and high frequency wires;
4-10. Replacement of Suppression Components
grounding the frame with bonding straps, and the use of
a.
When interference exists, test components as
capacitors, resistors, and internal-external toothed washers.
described in paragraph 4-11.
4-9. Interference Suppression Components
4-6
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