8 MALFUNCTION
8.6 MHL380 D
8.8 Table of malfunctions
Oil supply to pump interrupted.
Check and repair suction line.
Hydraulic pump defective.
Have the pump examined by a specialist for
mechanical damage.
Replace the entire hydraulic pump.
3 Priority valve defective. Have the priority valve checked by a specialist;
repair or replace as required.
Steering control unit defective.
Have the steering control unit checked by a
specialist; repair or replace as required.
Rotary transmission or steering cylinders de-
fective.
Oil supply to pump interrupted.
Check and repair suction line.
Hydraulic pump defective.
Have the pump examined by a specialist for
mechanical damage.
Replace the entire hydraulic pump.
Rotary transmission or shut-off valve defec-
tive.
Have the transmission or valve checked by a
specialist; repair or replace as required.
8.8.3 Insufficient braking power
Rotary transmission or foot brake valve de-
fective.
Have the transmission or valve checked by a
specialist; repair or replace as required.
Oil loss in brake system.
Discontinuous buzzing tone.
Malfunction in service brake system. Lowest
brake pressure range of 85 bar not reached.
Check and repair.
8.8.4 Parking brake cannot be released
Check oil supply to pump and shut-off valve,
repair or replace.
2 Disc brake sticking. Check, repair.
3 Parking brake valve defective. Check and repair or replace.
4 Oil loss in parking brake system. Check, repair.
5 Rotary transmission defective. Check, repair.