Doosan Mega 500-V - BRAKING

022-00029AE Operation and Maintenance Manual Troubleshooting 6-11
BRAKING
ELECTRICAL SYSTEM
Problem Possible Causes Remedies
Reduced brake action Low secondary pressure in Repair or replace brake valve
brake valve
Worn brake discs Replace brake discs
Damaged brake discs Replace brake discs
Damaged brake valve block Replace valve
Air in brake hydraulics due Repair leak, bleed system
to leak in brake hose
After bleeding brakes, brakes
are not fully released
Damaged brake discs Replace discs
Damaged brake disc return
spring
Replace return springs
Problem Possible Causes Remedies
Battery has no power and will
not accept a charge
Damaged battery plates Replace battery
Alternator not charging properly Repair or replace alternator
Bad ground Clean and tighten
Loose electrical connector Clean and tighten
Alternator belt loose or
damaged
Tighten or replace
Battery will accept a charge but
discharges soon after
Internal battery short Replace battery
Wiring harness short Repair wire