TB 9-2320-335-13&P
Listen for noisy bearings in the water pump, or an
in-and-out motion to the fan.
You can also check the pump and pulley by trying
to move it in and out or laterally with the engine off.
Replace the water pump pulley (TM 9-2320-387-24-1).
Replace the water pump (TM 9-2320-387-24-1).
Replace the serpentine belt (para. 3-81.2).
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