TM 9-4520-272-14&P
0016 00
Table 1. Troubleshooting Procedure for Large Capacity Field Heater (LCFH).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4.
Engine output drops
Step 1. Check for clogged or dirty air
Step 1. Remove and replace air
cleaner.
cleaner element (WP 0042 00).
Step 2. Check for improper valve /
Step 2. Adjust valve clearance (WP
rocker arm clearance.
Step 3. Check for clogged, sticking, or
Step 3. Remove and replace fuel
worn fuel injector nozzle.
injector (WP 0043 00).
5.
Engine runs rough
Step 1. Check for clogged, sticking, or
Step 1. Remove and replace fuel
worn fuel injector nozzle.
injector (WP 0043 00).
Step 2. Refer problem to direct
support maintenance level.
6.
Low compression pressure
Step 1. Check for improper valve /
Step 1. Adjust valve clearance (WP
rocker arm clearance.
Step 2. Check for leaks around fuel
Step 2. Tighten injector nuts to 7 to 9
injector.
ft-lbs. (100 to 120 kg-cm) (WP 0043
Step 3. Refer problem to direct
support maintenance level.
7.
Engine emits white smoke
Step 1. Check to see if engine oil level
Step 1. Drain and service engine oil
is too high. Check for contaminants in
the oil system
Step 2. Check for improper valve /
Step 2. Adjust valve clearance (WP
rocker arm clearance.
Step 3. Refer problem to direct
support maintenance level.
8.
Engine emits black smoke
Step 1. Check for clogged or dirty air
Step 1. Remove and replace air filter
filter.
Step 2. Check for clogged, sticking, or
Step 2. Remove and replace fuel
worn fuel injector nozzle.
injector (WP 0043 00).
Step 3. Refer problem to direct
support maintenance level.
0016 00-2
