Testing Radiator fan

[guamboyeli]

Im trying to sell an OEM radiator fan but i want to check to see if it still works... how can i got about doing this???

 

[92AWDHX40]

I tested mine I just hooked up a battery to it and it came on or didn't, try that its only a motor.

 

[guamboyeli]

Where do I hook up positive and negative is really my questions

 

[BIRDCLAWTSi]

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[wrencher]

Jumping the motor & seeing if it runs is a good test.
Amp draw on it is another good test.
Another is to jump the fan motor to ground of a battery on the appropriate fan terminal.
On the power side of the fan, hook up a test light & other end of test light to positive battery.

You can now spin the fan over by hand & check all the commutators of the fan motor to see if their all good.
Spinning the motor over slowly you will see the test light light brightly when making connections & off when the brush is moving over to the next commutator on the motor.
A non-lighting or dim segment indicates a worn out fan motor.