BobCat 753 – ALTERNATOR (55 AMP) – Alternator Regulator Test

Connect the positive (+) voltmeter lead to the positive (+) battery terminal [Figure 60-30-4].

Connect the negative (-) voltmeter lead to the negative (-) battery terminal [Figure 60-30-4].

Start the engine and run at 1500-2000 RPM.

The voltmeter should read between 13.9-14.7 volts.

If the reading is low stop the engine and disconnect the battery negative (-) cable.

The alternator is removed from the loader for clarity purposes [Figure 60-30-5].

Remove the wires from the back of the alternator.

Remove the regulator cover from the back of the alternator.

Install the wires on the back of the alternator.

Connect a jumper wire (Item 1) [Figure 60-30-5] from the brush terminal to the ground stud.

Connect the negative (-) battery cable and start the engine. Run at 1500 RPM.

If the voltmeter reading is 14.5 or above replace the regulator.

If the voltmeter reading is below 14.5, repair or replace the alternator.


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