OP000013
6-3
Troubleshooting
HYDRAULIC SYSTEM
Engine knocks, runs
unevenly or surges.
Low engine oil.
Refill.
Plugged air intake system.
Clean system and replace filter.
Injection pump out of adjustment.
Contact your
DOOSAN
dealer.
Plugged fuel filter.
Replace fuel filter.
Water or dirt in fuel system.
Clean system and add new fuel.
Clogged or dirty fuel injectors.
Clean injectors.
Engine has poor power.
Plugged air intake system.
Clean system and replace filter.
Clogged or dirty fuel injectors.
Clean injectors.
Fuel filters plugged.
Replace filters.
Engine speed control cable out of
adjustment.
Readjust.
Injection pump out of adjustment.
Contact your
DOOSAN
dealer.
Valve backlash faulty.
Adjust backlash.
Engine runs hot.
Low coolant level.
Add coolant.
Thermostat faulty.
Replace thermostat.
Radiator cap faulty.
Replace radiator cap.
Radiator core plugged.
Clean radiator.
Oil cooler core plugged.
Clean oil cooler.
Fan belt loose or damaged.
Tighten or replace as required.
Temperature sensor faulty.
Replace sensor.
Problem
Cause
Remedy
Problem
Cause
Remedy
None of the controls
function (loud noise from
pumps).
Hydraulic pump failed.
Contact your
DOOSAN
dealer.
Low hydraulic oil level.
Add hydraulic oil as required.
Suction line plugged or damaged.
Clean or replace as required.
None of the controls
function (no noise from
pumps).
Pilot pump failure.
Contact your
DOOSAN
dealer.
Cut off solenoid valve failed.
Replace solenoid.
Pilot cutoff switch is ON.
Adjust pilot cutoff switch clearance.
Summary of Contents for DX140LC
Page 2: ......
Page 67: ...OP000597 2 3 Operating Controls ...
Page 87: ...OP000597 2 23 Operating Controls ...
Page 122: ...OP000597 Operating Controls 2 58 CD Player Optional AST DIR FG000109 Figure 123 ...
Page 184: ...OP000598 Operation 3 48 ...
Page 193: ...OP000599 4 9 Inspection Maintenance and Adjustment ...
Page 272: ...OP000599 Inspection Maintenance and Adjustment 4 88 ...
Page 278: ...OP000600 Transportation 5 6 ...
Page 284: ...OP000013 Troubleshooting 6 6 ...
Page 292: ...OP000601 Specification 7 8 ...