TM 9-4520-272-14&P
FIELD (DIRECT) SUPPORT MAINTENANCE
LARGE CAPACITY FIELD HEATER (LCFH)
NSN 4520-01-500-1534
CYLINDER HEAD
REMOVE, SERVICE, INSPECT, INSTALL
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 13, WP 0092 00)
Materials/Parts
Equipment Condition
Oil, engine lubricating (Item 25, WP 0119 00)
Heater shut down and cool.
Rag, wiping, clean (Item 4, WP 0119 00)
Engine bay access door open.
Main battery switch OFF and handle removed.
Solvent, degreasing (Item 24, WP 0119 00)
Air cleaner removed (WP 0042 00)
Fuel injector removed (WP 0043 00)
Rocker arm assembly removed (WP 0076 00)
NOTE
Engine maintenance requires metric tools for the removal of all hardware and
assemblies.
REMOVE
1. Remove muffler assembly from engine.
2. Release cylinder head (1) from studs (6) by removing nuts (2, 3) and washers (4, 5). Carefully
remove cylinder head from studs and place on a clean work surface.
3. Remove and discard O-ring (7) and cylinder head gasket (8).
4. Slide exhaust valve (16) and inlet valve (15) out of cylinder head (1).
5. Remove valve cap (9) and cotter assembly (10) from inlet valve (15).
WARNING
Valve springs are under high pressure. Be sure to wear eye protection
while working with valve springs. Use caution and remove spring retainers
slowly. Failure to observe this warning can cause serious injury to
personnel.
6. Compress spring (12) using compression tool and carefully remove spring retainer (11). Slowly
release hold on compression tool to release spring tension. Remove spring.
7. Remove valve stem seal (13) and washer (14) from inlet valve.
8. Repeat steps 4 through 6 for exhaust valve (16).
0079 00-1
