FIELD (UNIT) MAINTENANCE
LARGE CAPACITY FIELD HEATER (LCFH)
Tool Kit, General Mechanics (Item 2, WP 0092
MOS 63J or 52C
Heater shut down and cool.
Main Battery Shutoff Switch to OFF position and
Burner access door open.
Electrical high voltage cannot be seen but it can kill you, render you unconscious, or
severely burn you. Electricity is unlike most other dangerous things you can come in contact
with because it gives no warning and no symptoms to be wary of. To ensure your safety
and that of other maintenance personnel, always observe the following precautions:
The LCFH must be electrically grounded. Failure to ground the LCFH may result in serious
injury or death from electrical malfunction.
DO NOT perform any maintenance on electrical equipment unless all power is
BE CERTAIN that there is someone assisting you who can remove power
ALWAYS place POWER OFF warning tags on power supply switches so that no
one will apply power while you are performing maintenance.
FOR ARTIFICIAL RESPIRATION, REFER TO FM 21 11.
1. Move the main battery shutoff switch to the OFF position and remove handle.
2. Disconnect ignition pack wiring harness (1) by separating the connector.
3. Remove the two hex head cap screws (2), flat washers (3), and lock washers (4).
4. Pull ignition pack (5) partially out of burner cover (6)and tag the two high tension cables (7 and 8) as
to their connection location on the ignition pack (5).