6-3
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 DX700LC
Page 2: ......
Page 72: ...OP001120 Safety 1 66 ...
Page 142: ...OP001121 Operating Controls 2 70 ...
Page 188: ...OP001122 Operation 3 46 ...
Page 197: ...OP001123 4 9 Inspection Maintenance and Adjustment ...
Page 282: ...OP001123 Inspection Maintenance and Adjustment 4 94 ...
Page 298: ...OP000030 Troubleshooting 6 6 ...
Page 301: ...OP001125 7 3 Specification ...
Page 308: ...OP001125 Specification 7 10 ...
Page 314: ...950106 00012E Index 8 6 ...