Cummins/Onan 1750DQKB / 3200 Series — Genset Voltage Display Calibration (A)
Testing & diagnosis · Voltage regulator / display
For the Cummins/Onan 1750DQKB / 3200 Series, from the Cummins/Onan service manual.
Applies to: Cummins/Onan 1750DQKB, Cummins/Onan DFE
Before you start
- Contacting high voltage components can cause electrocution, resulting in severe personal injury or death.
Procedure
- Display the Voltage Calibration submenu.
- With the genset OFF, attach a calibrated voltmeter to the AC output from L1 to L2.
- Start the genset and allow it to reach normal operating speed.
- Calibrate voltage reading for L1 so the display agrees with the calibrated voltmeter.
- Shut the generator set OFF.
- Repeat steps 2 through 5 for L2 and L3.
- Exit menu to save changes.
Tools required
- calibrated RMS multimeter (Fluke 87 or 8060A recommended) Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Cummins/Onan 1750DQKB →, Cummins/Onan DFE →
Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.