Drive Function - Hitachi ZW 370-6 Operator's Manual

6. Drive Function

Problem
Steering wheel or joystick
steering lever (option) is
heavy to operate.
Steering wheel or joystick
steering lever (option) turns
in unexpected direction.
Joystick steering operation is
not possible using the joystick
steering lever. (Option)
Transmission shifting (F and
R) does not work using the
joystick steering F/R switch.
(Option)
Joystick steering system does
not turn off when the armrest
is fully raised. (Option)
Joystick steering lever
(option) movement is hard
or stiff or does not return to
neutral when released.
Accelerator pedal is heavy to
operate.
Accelerator pedal play is
excessive.
Parking brake
Does not work properly
Service brake does not work
properly
Service brake is dragging.
Service brake fluid loss
(hydraulic oil).
f
NOTE: * Consult the nearest authorized dealer.
TROUBLESHOOTING
Cause
Faulty steering pump
Faulty steering device
Malfunction of steering cylinder
Relief valve set pressure reduction
Faulty steering column
Low tire air pressure
One side brake is applied or dragged.
Joystick steering system is not turned on.
Joystick steering lever failure (the switch
works but it will not steer).
Armrest switch failure
Controller failure
Joystick steering system is not turned on.
F/R switch failure
Armrest switch failure
Controller failure
Armrest switch failure
Controller failure
Defective wiring
Defective joystick steering lever
Rusted joint
Worn joint
Worn brake disk and/or pads
Faulty parking brake solenoid valve
Malfunction of brake valve
Oil leak from brake line, Air mixing
Malfunction of brake valve
Faulty brake pedal
Corrosion of brake pedal parts
Pebbles in area of brake pedals
Oil leak from brake line and/or hose
connector
Oil leak due to brake piston seal (inside axle)
11-4
Solution
* Repair, Replace
* Repair, Replace
* Repair, Replace
* Adjust
* Inflate
* Adjust
Turn the key switch on, lower the
armrest, turn the joystick steering
system switch on, and start the engine,
in this order. (Refer to page 3-3.)
* Repair, Replace
* Repair, Replace
* Repair, Replace
Turn the key switch on, lower the
armrest, turn the joystick steering
system switch on, and start the engine,
in this order. (Refer to page 3-3.)
* Repair, Replace
* Repair, Replace
* Repair, Replace
* Repair, Replace
* Repair, Replace
* Repair, Replace
* Repair, Replace
* Lubricate, Repair
* Replace, Repair
* Replace
* Repair or replace
* Repair or replace
* Repair. Bleed air
* Repair or replace
* Repair or replace
Clean and lubricate
Remove - clean area
* Retighten or repair
* Repair