ONAN UR Generator and Controls 25-180kW Service Manual

Use this manual to troubleshoot, disassemble/reassemble, and repair Cummins-Onan "UR" series alternators and controls. This manual is useful for both professional mechanics and DIY enthusiasts.

Includes older models with VR22 exciter regulator and newer models where the exciter diode rectifier assembly has been relocated into the control panel. The manual is for the generator/alternator only and does not include the engine portion.

• FILENAME: CUMMINS-ONAN UR Gen Controls 25kW to 180kW servman.
• Can be printed: YES
• Navigation bookmarks: YES
• PAGES: 81
• LANGUAGE: English
• PUBLICATION ID: 900-0150
• PUBLICATION YEAR: 1978

CONTENTS:

• Generator Section I
  • Question & answer Troubleshooting Guide
  • Adjustments and Procedures
• Generator Section II
  • Question and answer troubleshooting guide
  • Adjustment and Procedures
• Controls
  • Question & answer Troubleshooting Guide
  • Adjustments and Procedures
• Wiring Diagrams