Generator Test

If the generator is not charging or output is low go to step  6. If the battery indicator lamp does not operate correctly go to step  1.

1. Turn ignition switch to the ON position. Does the battery indicator lamp come ON momentarily.
2. If lamp comes ON, go to step 3. If lamp does not light at all, check bulb. If bulb is OK, check the 3-wire connector plug plus B+ terminal, in rear of the generator for proper connection or corrosion. Clean or tighten connectors as necessary.
3. Start engine, the battery indicator lamp should go out after the engine starts. If lamp goes out it is OK. If not OK, go to next step.
4. Check the 3-wire connector plug and B+ terminal, in rear of the generator for improper connection or corrosion. Clean or tighten connectors as necessary. If improper connection, blown fuse or short circuit repair as necessary.
5. Using a voltage meter:
   • Check the battery voltage before starting.
   • Start engine and raise the engine speed to 1500 RPM with all electrical loads OFF.
   • Check the battery voltage again, the voltage should be between 13.5 and 15 volts.
   • If not OK, replace generator. If OK, go to step  6.
6. Check generator output by:
   • Connecting an load bank/variable carbon pile rheostat across the battery terminals. Be sure the carbon pile is in the OFF position before connecting leads.
   • Connect a voltmeter across the battery terminals.
   • Connect an induction ammeter clamp around the output wire of the generator.
   • Start the engine, raise and hold the engine speed at 1500 RPM.
   • Adjust the carbon pile so the generator output amps increase. Confirm that at least 80 amps or more can be obtained and voltage remains between 13.5 and 15.0 volts.
7. The generator amperage must meet the output requirements of 80 AMPS. If amperage reading is less than specified , the generator should be replaced. These generators are not intended to be disassembled for service. It must be replaced as an assembly.