BobCat 753 – ALTERNATOR (55 AMP) – Rectifier (Diode) Test

The alternator is removed from the loader for clarity purposes [Figure 60-30-3].

Disconnect the negative (-) cable from the battery.

Install the wires in their original location on the back of the alternator.

Connect a jumper wire (Item 1) [Figure 60-30-3] to the alternator output terminal and the regulator terminal.

Connect the battery negative (-) cable.

Start the engine and run at 2600 RPM.

If the reading is within 45-55 amps. at 2600 RPM replace the rectifier (diode) assembly or replace the alternator.

If the reading is low, do the Alternator Regulator Test.


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