TM 9-4520-272-14&P
UNIT MAINTENANCE
LARGE CAPACITY FIELD HEATER (LCFH)
TROUBLESHOOTING PROCEDURES
INITIAL SETUP:
Tools
Personnel Required
Tool Kit, General Mechanics (Item 2, WP 0092
MOS 63J or 52C
Wrench, Torque (Item 12, WP 0092 00)
Micrometer, Caliper (Item 12, WP 0092 00)
Materials/Parts
Equipment Condition
None required
Heater shut down and cool unless otherwise
indicated.
Main battery switch OFF and handle removed
unless otherwise indicated.
Flip power switch to OFF position before
attempting corrective action.
WARNING
Hearing protection should be worn when performing any troubleshooting or maintenance
function requiring that the heater be operating with the access panels open or closed.
Failure to wear ear protection could result in hearing loss or damage.
Table 1. Troubleshooting Procedure for Large Capacity Field Heater (LCFH).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
Engine will not crank
Step 1. Test starter motor to determine
Step 1. Remove and replace starter
if brushes require replacement or if
motor (WP 0044 00).
starter motor is defective.
2.
Engine will not start
Step 1. Check for improper valve /
Step 1. Adjust valve clearance (WP
rocker arm clearance.
Step 2. Check for kinked, blocked, or
Step 2. Adjust fuel line and/or clear
clogged fuel line.
line of blockage.
Step 3. Check for clogged, sticking, or
Step 3. Remove and replace fuel
worn fuel injector nozzle.
injector (WP 0043 00).
Step 4. Refer problem to direct
support maintenance level.
3.
Engine starts and stops
Step 1. Check for damaged air heater
Step 1. Remove and replace air
or air heater electrical leads.
heaters (WP 0042 00).
Step 2. Check for kinked or clogged fuel
Step 2. Adjust fuel line and/or clear
line.
line of blockage.
Step 3. Check for clogged, sticking, or
Step 3. Remove and replace fuel
worn fuel injector nozzle.
injector (WP 0043 00).
Step 4. Refer problem to direct
0016 00-1
