Doosan DL200 - Hydraulic System

OP000040
6-3
Troubleshooting
HYDRAULIC SYSTEM
Unstable (rough) idling. Air in fuel lines. Tighten fuel connections and
filter.
Fuel filter clogged. Replace fuel filter.
Fuel pump failure. Contact your DOOSAN dealer.
Incorrect fuel injection timing.
Insufficient power. Air cleaner filter clogged. Clean or replace element.
Fuel filer element clogged. Replace fuel filter.
Throttle linkage adjustment
wrong.
Check and adjust linkage.
Engine oil level too high. Check dipstick and correct
level.
Incorrect valve clearance. Contact your DOOSAN dealer.
Piston ring wear.
Defective injectors.
Fuel pump failure.
Problem Possible Cause Remedy
Problem Possible 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.
Cutoff solenoid valve failed. Replace solenoid.
Relief cartridge of pilot parking
valve stuck.
Clean or replace as
required.
Safety limit switch is ON. Adjust limit switch
clearance.
All actuators have low power. Low hydraulic oil level. Add hydraulic oil as
required.
Suction filter clogged. Clean filter.
Hydraulic pumps faulty. Contact your DOOSAN
dealer.
Main relief pressure too low. Contact your DOOSAN
dealer.
Hydraulic pumps cavitating. Bleed air from hydraulic
pumps.