4.2.2
Stand-Alone Cooling System
The Stand-Alone APU cooling system is self-contained and does not plumb into the truck’s cooling system.
Coolant level can be checked through the sight glass on the surge tank. The surge tank is mounted
remotely away from and above the APU, where the sight-glass is easily visible. The surge tank is
connected to the APU with coolant hoses.
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