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TM 5-4210-220-12
4-15. AUXILIARY POWER UNIT - Continued
4-15.2 Circulation Pump.
This task covers
a
Removal
b Installation
TOOLS
MATERIALS/PARTS
Tool Kit, Master Mechanic,
MS51922-1 Locknut
NSN 5180-00-699-5273
EQUIPMENT CONDITION
Main Engine Shutdown (see para. 2-10)
APU Shutdown (see para. 2-12)
Batteries Disconnected (see para. 4-24)
WARNING
Engine coolant can be hot enough to cause serious burns. Allow engine to cool before removing
the circulation pump.
NOTE
The circulation pump can be removed and repaired with the APU assembly mounted in the
truck.
4-146
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