TM 9-4520-272-14&P
0081 00
Table 1. Troubleshooting Procedure for Large Capacity Field Heater (LCFH).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 3. Possible piston seizure or
Step 3. Remove and replace
wear. Inspect pistons (WP 0087
damaged or worn piston
components. (WP 0088 00).
Step 4. If engine cannot be
repaired, replace IAW WP 0078
4. ENGINE RUNS ROUGH
Step 1. Check flywheel nut for
Step 1. Tighten flywheel nut to
proper tightness.
86 to 94 ft-lbs (1200 to 1300 kg-
cm).
Step 2. If engine cannot be
repaired, replace IAW WP 0078
5. LOW COMPRESSION
Step 1. Check for leak at inlet and
Step 1. Remove and replace
PRESSURE
exhaust valves indicating worn
inlet / exhaust valve components
valve seat or guide (WP 0085 00).
as required (WP 0086 00).
Step 2. Check for loose cylinder
Step 2. Tighten cylinder head
head nuts causing leak at cylinder
nuts in an even pattern to 30 to
head gasket.
33 ft-lbs (420 to 460 kg-cm).
Step 3. Check for broken or
Step 3. Remove and replace
damaged cylinder head gasket (WP
cylinder head gasket (WP 0080
Step 4. If engine cannot be
repaired, replace IAW WP 0078
6. ENGINE EMITS WHITE
Step 1. Possible worn or broken
Step 1. Remove and replace
SMOKE
piston ring, worn piston. Inspect
damaged piston assembly
piston assembly (WP 0087 00).
components (WP 0088 00).
Step 2. Check for defective valve
Step 2. Remove and replace
stem seal (WP 0087 00).
valve stem seal (WP 0088 00).
Step 3. If engine cannot be
repaired, replace IAW WP 0078
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