4-19. WINTERIZATION SYSTEM.
4-19.4 Pump Body Heater.
This task covers
Tool Kit, Master Mechanic,
Main Engine Shutdown (see para. 2-10)
APU Shutdown (see para. 2-12)
Batteries Disconnected (see para. 4-24.12)
HS72 Hose Clamp
102200 Assy, Pump Body Heater
Engine coolant can cause severe burns. Allow engine to cool before attempting to maintain
the pump body heater.
The fuel tank cooling fan and hose reel fan are identical to the pump body heater fan.
Replacement of these fans and motors is similar to pump body fan as detailed in repair
Remove pump body door.
The heater can be isolated by using two pairs of hose crimp retaining
pliers, one on the heater inlet and one on the heater outlet hose.
Otherwise, place container beneath radiator drain hose. Open valve
and drain all coolant.
Remove hose clamps (5) from both inlet and outlet water hoses (6) to
Remove hose clamps (1) from air intake nipple (2) and heater 4).
Remove air intake hose (3)..
Tag and disconnect electrical connections to motor (7).