FIELD (UNIT) MAINTENANCE
LARGE CAPACITY FIELD HEATER
BURNER FUEL PUMP ASSEMBLY
INSPECT, ADJUST, REPLACE
Tool Kit, General Mechanics (Item 2, WP 0092
MOS 63J or 52C
Main battery switch in the OFF position and the
1. Turn the motor shaft (1) by placing the left hand on the coupling assembly (2) (see WP 0040 00) and
rotating back and forth.
2. Visually inspect the pump shaft (3) through the engine shroud (4) and ensure that the pump shaft (3)
is also turning. There should not be any slippage of the flexible coupling (5) while turning the motor
If the flexible coupling (5) is slipping on the pump shaft (3), tighten the hex set screw (6) in the side of the
flexible coupling (5).