TM 9-4520-272-14&P
OPERATOR, FIELD AND SUSTAINMENT MAINTENANCE
LARGE CAPACITY FIELD HEATER (LCFH)
UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES
Table 1. Unit Preventive Maintenance Checks and Services.
ITEM
INTERVAL LOCATION/ITEM
PROCEDURE
NOT FULLY
NO.
TO
MISSION CAPABLE
CHECK/SERVICE
IF:
1
100
Engine oil strainer
Remove and clean engine oil strainer
Oil strainer is
hours
clogged, dirty, or
damaged.
2
250
Engine lubricating
Engine oil has not
NOTE
hours
oil system
been changed.
First oil service occurs between 20
and 50 hours of operation, 250
hour intervals thereafter.
Service engine lubricating oil (WP 0046
3
Check
Burner nozzle and
Check burner nozzle and electrodes IAW Burner nozzle
every 250
electrodes
clogged or
hours;
electrodes out of
replace at
Replace burner nozzle at 1000 hours
adjustment.
1000 hours
4
250
Heat Exchanger
Drain heat exchanger IAW WP 0054.
Heat exchanger
hours
retaining fluid.
5
500
Engine air filter
Remove and replace air filter (WP 0046
Air filter is dirty or
hours
damaged.
6
500
Diesel engine
a. Inspect fuel injection pump for
Fuel leak of any kind
hours
injection pump
damage and evidence of leakage.
is present.
b. Check area around pump sealing
gasket for leaks. Remove and replace
gasket as required (refer to Direct
Support Maintenance).
7
500
Engine intake and
Valves are not
NOTE
hours
exhaust valve
properly adjusted,
clearance
causing improper
First valve clearance check occurs
engine operation.
between 20 and 50 hours of operation,
500 hour intervals thereafter.
Adjust valve clearance of intake and
exhaust valve seats (WP 0041 00).
8
500
Diesel engine
Inspect fuel injector nozzle, replace as
Fuel injector nozzle
hours
injection nozzle
required (WP 0043 00).
clogged or otherwise
0018 00-1
