TM 9-4520-272-14&P
FIELD (UNIT) MAINTENANCE
LARGE CAPACITY FIELD HEATER (LCFH)
NSN 4520-01-500-1534
DIESEL ENGINE FUEL INJECTOR
REMOVE, INSPECT, INSTALL
INITIAL SETUP:
Tools
Personnel Required
Tool Kit, General Mechanic's Automotive
MOS 63J or 52C
(Item 2, WP 0092 00)
Wrench, Torque (Item 12, WP 0092 00)
Materials/Parts
Equipment Condition
Bolt, M8 or M9 x 100mm, minimum length (Item
Heater shut down and engine cool
29, WP 0119 00)
Main battery switch OFF and handle removed
NOTE
Engine maintenance requires metric tools for the removal of all hardware and
assemblies.
REMOVE
1. Disconnect rigid fuel supply line (1) from fuel injector (2). Disconnect fuel return hose (3) by loosening
clamp (4).
2. Remove opposite end of rigid fuel line (5) on fuel injector pump (6).
3. Remove two nuts (7) and nozzle retainer (8) from studs (9).
CAUTION
When removing fuel injector, wrap it in a clean cloth to protect injector nozzle. Do not
place nozzle tip directly onto a hard surface, as damage will result.
4. Carefully remove fuel injector (2) from injection port (10) in cylinder head.
5. Remove injector spacer (11) and gasket (12) from injector port (10). Discard gasket.
INSPECT
1. Inspect fuel injector (2) for obvious damage. Check for clogged or dirty injector nozzle. Replace
injector if nozzle is damaged.
2. Inspect return rigid fuel line (1) for cuts, kinks, or crimping. Replace rigid fuel line if damaged.
3. Inspect return fuel hose (3) for cuts, tears, kinks, or crimping. Replace fuel hose if damaged.
0043 00-1
