Facts About Generators
GeneratorsDirectoryCompareRepairEnginesControllersPartsManufacturersGuides
Search models or part #
Home›Repair guides›* RECTIFIERS

Cummins/Onan — * RECTIFIERS

For these Cummins/Onan models: 15.0 HA - 21 - a, 7.5 HA - 21 - a.

Applies to: Cummins Onan 15 0 Ha 21 A, Cummins Onan 7 5 Ha 21 A

Procedure

  1. 8. Rectifier CR1 normally has 600 ohms in one direction, infinity in the other direction. fl ba SN EAS FUSE ZENER DIODE FIGURE 4-23. 300-0747 PRINTED CIRCUIT BOARD 18 LOAD SENSOR BOARD COMPONENT TESTS (SPEC A AND B) Check the load sensor board components using the wiring diagrams and Figure 4-24 as references.
  2. 1. Place the control in the “MANUAL” position if the sensor board is mounted in the control. Check components starting at the left side of the board with an ohmmeter set at R X 100 scale.

Source: manual:907-0500 Onan HA Auto Demand Control Service Manual (06-1984).pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.