4-15. AUXILIARY POWER UNIT - Continued
4-15.2 Circulation Pump.
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)
Engine coolant can be hot enough to cause serious burns. Allow engine to cool before removing
the circulation pump.
The circulation pump can be removed and repaired with the APU assembly mounted in the