© Mar. 2022 5-30 GTTZ10EJ Maintenance Manual
MAINTENANCE
UNSAFE OPERATION HAZARD
• Corden off the area before testing.
• Before testing, Position the
machine on a level, firm surface
clear of obstructions.
• Perform the test from the ground
using the platform controls.
2. Testing
1. Start the machine.
2. Push the mast lift/turntable rotate function button.
3. Press and hold the enable button on the joystick,
and slowly deflect forward the joystick to raise the
mast approx. 0.5m (1ft 8in).
4. The pothole protective plates on both sides should
fully extend.
5. Apply hand force to push the protective plate, the
plate should not flip.
6. Press and hold the enable button on the joystick,
and slowly deflect backward the joystick to lower
the mast.
7. The pothole protective plates on both sides should
retract.
8. Place a wooden block under the protive plate. The
wooden block measures 50mm×100mm×50mm
(2in×4in×2in).
9. Press and hold the enable button on the joystick,
and slowly deflect forward the joystick to raise the
mast approx.1m (3ft 3in).
10. The buzzer should sound continuously, the displays
of platform and ground controls indicate “18”, and
the mast is not prevented from raising.
11. Push the drive function button.
12. Press and hold the enable button on the joystick,
and slowly deflect forward or backward the joystick.
13. The machine should not drive forward or reverse.
14. Press and hold the enable button on the joystick,
and press on the left or right of the rocker switch on
top of the joystick.
15. The machine should not steer left or right.
16. Push the mast lift/turntable rotate function button.
17. Press and hold the enable button on the joystick,
and slowly deflect backward the joystick to lower
the mast.
Tilt Protection
1. Preparation
UNSAFE OPERATION HAZARD
• Corden off the area before testing.
• Before testing, Position the
machine on a level, firm surface
clear of obstructions.
• Perform the test from the ground
using the platform controls.
• Perform the test with the machine
in stowed position.
2. Testing
Figure 5-36
Testing the 3°level switch
1. Start the machine.
2. With the machine in stowed position, move the level
switch in X (side-to-side) or Y (fornt-to-back)
direction by 3°or more, the alarm should not sound.
3. Raise the mast until the lower limit switch
disengages, the display will indicate “LL”(tilt alarm),
and the mast lift and drive functions should be
restricted.
4. Lower the platform to the stowed position, the tilt
alarm should not sound, and the function restriction
should be lifted.
5. Place two wooden blocks under the two wheels on
the front or rear end of the machine. The wooden
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