Doosan G643 - Customer Problem Analysis Sheet

G643(E) Service Manual 228 Chapter 7. Basic Troubleshooting
Basic Troubleshooting Guide
Customer Problem Analysis Sheet
1. Forklift Information
(I) VIN:
(II) Production Date:
(III) Hour meter Reading: (hrs)
2. Symptoms
□ Unable to start
□ Engine does not turn over □Incomplete combustion
□ Initial combustion does not occur
□ Difficult to start □ Engine turns over slowly □ Other_________________
□ Poor idling
□ Rough idling □ Incorrect idling
□Unstable idling (High: ______ rpm, Low: ______ rpm)
□ Other__________________________________
□ Engine stall
□ Soon after starting □ After accelerator pedal depressed
□After accelerator pedal released
□ Shifting from N to D-range
□ Other_______________________________________________
□ Others
□ Poor driving (Surge) □ Knocking □ Poor fuel economy
□ Back fire □ After fire □ Other____________________________
3. Environment
Problem frequency
□ Constant □ Sometimes (_________________) □ Once only
□ Other___________________________________________
Weather □ Fine □ Cloudy □ Rainy □ Snowy □ Other__________________
Outdoor temperature Approx._____ ℃/℉
Place
□ Suburbs □ Inner City □ Uphill □ Downhill
□ Rough road □ Other___________________________________
Engine temperature □ Cold □ Warming up □ After warming up □ Any temperature
Engine operation
□ Starting □ Just after starting (____min) □ Idling □ Racing
□ Driving □ Constant speed □ Acceleration □ Deceleration
□ Other_____________________________
4. MIL/DTC
MIL (Malfunction Indicator Lamp) □ Remains ON □ Sometimes lights up □ Does not light
DTC □ Normal □ DTC(_______________________________________)