Doosan D80 - Common Problems and Solutions

Troubleshooting Operating & Maintenance Manual
Book: 46551819 (2-11-2011) Rev B 6
Trouble Shooting Chart
Bold Headings depict the COMPLAINT - Subheadings indicate CAUSES
NOTE: Subheadings suggest sequence to follow troubleshooting.
Table 1: Unit Shutdown
Table 2: Won’t Start/Run:
Cause Corrective Action
Out of Fuel Add CLEAN diesel Fuel
Compressor Oil Level Too Low Add correct oil
Compressor Oil Temp. Too High See Table 4
Engine Water Temp. Too High Check coolant level. If necessary, Add.
Loose Wire Connection Wiggle wires at switches & connector blocks. Make repairs.
Defective Discharge Air Temp. Switch Replace switch.
Defective Engine Oil Pressure Switch Replace switch.
Broken Engine Fan Belt Replace fan belt.
Engine Oil Pressure Too Low Check engine oil level and add if necessary.
Malfunctioning Relay Replace relay.
Blown Fuse Replace fuse/Check for Short.
Engine Malfunctioning Contact Service Technician
Airend Malfunctioning Contact Service Technician
Cause Corrective Action
Out of Fuel Add CLEAN diesel Fuel
Clogged Fuel Filters Service filters.
Compressor Oil Level Too Low Add correct oil
Loose Wire Connection Repair or replace connection.
Low Battery Voltage Check electrolyte level. Check connections.
Defective Alternator Replace/Repair Alternator
Engine Water Temp. Too High Check fluid level. If necessary, Add.
Malfunctioning Start Switch Replace switch.
Defective D2 Diode Replace D2 Diode.
Blown Fuse Replace fuse/Check for Short.
Engine Oil Pressure Too Low Check engine oil level and add if necessary.
Compressor Oil Temp. Too High See Table 4.
Defective Discharge Air Temp. Switch Replace switch.
Defective Engine Oil Pressure Switch Replace switch.
Defective Engine Temp. Switch Replace Switch
Defective Separator Tank Temp Switch Replace Switch
Malfunctioning Relay Replace relay.
Engine Malfunctioning Contact Service Technician
Airend Malfunctioning Contact Service Technician