Doosan Mega 500-V User Manual

022-00029AE Operation and Maintenance Manual Troubleshooting 6-3
HYDRAULIC SYSTEM
Engine does not start when the
starter motor is turning
(Also see ELECTRICAL
TROUBLESHOOTING)
Fuel filter element clogging Replace fuel filter
Starter motor speed too low Booster Battery may be used
Defective engine shut off
solenoid
Contact your DOOSAN dealer
Fuel pump failure
Incorrect fuel injection timing
Compression pressure too low
Defective injectors
Unstable (rough) idling Air in fuel lines Tighten fuel connections and
filter
Fuel filter element clogging Replace fuel filter
Fuel pump failure
Contact your DOOSAN dealer
Incorrect fuel injection timing
Insufficient power Air cleaner element clogging Clean or replace element
Fuel filer element clogging 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 Causes Remedies
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
Safety limit switch is "ON" Adjust limit switch clearance
Problem Possible Causes Remedies

Doosan Mega 500-V Specifications

General

Brand	Doosan
Model	Mega 500-V
Category	Compact Loader
Language	English