Cummins Onan HDCAA/AB/AC/AD (Spec A-D) Generator set PDF

This is the service manual for the Cummins Onan generator sets (gensets), next models:

HDCAA (Spec A−D)
HDCAB (Spec A−D)
HDCAC (Spec A−D)
HDCAD (Spec A−D)

Electronic manual for Cummins Onan generator set contains information on repairs and maintenance, diagnostic and interactive tests, instructions for repair and maintenance, wiring schematic, electrical circuits for engines (see below full contents), which will help the client to remove all the existing problems and prolong the quality work the equipment.

All information in the electronic catalog Cummins Onan  Genset is presented in PDF on English. Software Cummins Onan is very easy to use because it is designed to work on a personal computer or laptop. The electronic manual Cummins Onan is required to date anyone with the latest equipment, which is equipped with electronic devices and computers.

The descriptions and specifications contained in this manual have been prepared by specialists and meet the highest requirements, so trust the specialists and be calm about your equipment with this manual. Improper service or replacement of parts can lead to severe personal injury or death and to damage to equipment and property, please read this manual before procedure maintenance or repair.

Table of Contents

• SAFETY PRECAUTIONS
• 1. INTRODUCTION
  • About this Manual
  • Fuel Recommendations
  • Engine Oil Recommendations
  • Starting Batteries
• 2. OPERATION
  • Control Panel (Beginning Spec C)
  • Control Panel (Prior to Spec C)
  • Remote Control
  • Priming the Fuel System
  • Manual Starting
  • Manual Stopping
  • Automatic Starting and Stopping
• 3. PERIODIC MAINTENANCE
  • General Inspections
  • Checking Engine Oil Level
  • Changing Engine Oil and Oil Filter
  • Maintaining the Battery and Battery Connections
  • Replacing the Air Filter Element
  • Cleaning the Spark Arrestor
  • Replacing the Fuel Filter
  • Changing Coolant
• 4. PREPARATIONS FOR SERVICE
  • Special Tools
  • Safety
  • Removing / Installing Genset
  • Test Stand
  • Disassembling / Reassembling Housing
• 5. FUEL SYSTEM
  • Fuel Injection System
  • Fuel Filter
  • Fuel Pump
• 6. AIR INTAKE SYSTEM
• 7. EXHAUST SYSTEM
• 8. ENGINE COOLING SYSTEM
  • Thermostat and Pump
  • Radiator
  • Fan (Blower)
  • Fan Belt
• 9. ENGINE AND ACCESSORIES
  • Engine
  • Engine Sensors
  • Battery Charging Alternator
  • Starter Motor
  • Glow Plugs
  • Governor Actuator
  • High-Idle Speed
• 10. GENERATOR
  • Generator Winding Tests
  • Generator Service
  • Adjusting Voltage
• 11. CONTROL
  • Control Board (Controller)
  • Local and Remote Control Switches
  • Relays K1, K2, K3
  • Control Fuses F1, F2
  • Hour Meter
  • Line Circuit Breakers CB1, CB2
• 12. TROUBLESHOOTING
  • Diagnostics Feature of the generator
  • Operator panel
  • Restoring Fault Code Flashing
• 13. SERVICE CHECKLIST
• 14. SPECIFICATIONS
• 15. THREAD TORQUES
• WIRING SCHEMATIC (BEGINNING SPEC C)
• CONTROL WIRING HARNESS (BEGINNING SPEC C)
• AC WIRING HARNESS AND CHASSIS GROUNDS
• WIRING SCHEMATIC (PRIOR TO SPEC C)
• CONTROL WIRING HARNESS (PRIOR TO SPEC C)