MAINTENANCE PROCEDURES
TB18 Plus&20J Plus Maintenance Manual 5-29 © Apr 2022
2. Start the machine at the platform controller.
3. Drive the machine to allow the right steer wheel
upon the kerb or a block with thickness of 12cm (4.7
in).
4. The other 3 wheels of the machine should come in
close contact with the ground.
5. Drive the machine to allow the left steer wheel upon
the kerb or a block with thickness of 12cm (4.7 in).
6. The other 3 wheels of the machine should come in
close contact with the ground.
7. Drive the machine to allow the both steer wheels
upon the kerb or a block with thickness of 12cm (4.7
in).
8. The non-steer wheels of the machine should come
in close contact with the ground.
B-21 Test Drive Speed
1. Move the engine start switch on the platform
controller.
2. Depress the foot switch.
3. Slowly push forward the drive/steer control handle
to full drive speed.
4. Move the drive high/low speed select switch on the
platform controller to select the drive high speed.
5. The test results should be as shown in the table
below:
Table 5-13
POSITION MAX DRIVE SPEED
Operating 1.1 Km/h (0.68 mph)
Non-operating 4.8 Km/h (3 mph)
6. Depress the foot switch.
7. Slowly push forward the drive/steer control handle
to full drive speed.
8. Move the drive high/low speed select switch on the
platform controller to select the drive low speed.
9. The test results should be as shown in the table
below:
Table 5-14
POSITION MAX DRIVE SPEED
Operating 1.1 Km/h (0.68 mph)
Non-operating 1.1 Km/h (0.68 mph)
NOTICE
If the drive speed exceeds the test results as shown
above, please immediately tag and remove the
machine from service.
B-22 Inspect Emergency Lowering
When the engine/motor fails, depending on the actual
conditions, move the emergency power switch on the
ground or platform controller to start the hydraulic
pump, and meanwhile move the function switch to
enable the boom lowering, retracting and rotating.
NOTICE
• The emergency power switch serves only for a
short time of use (with the platform fully lowered
from the maximum degree and length possible)
when the engine/motor fails.
• When the emergency power is in use, do not
perform two or more functions simultaneously,
otherwise the auxiliary motor and pump will get
overloaded.
Operating from the ground:
1. Turn the Ground/Platform select switch on the
ground controller to the ground control position.
2. Pull out the emergency stop button on the ground
controller to the ON position.
3. Turn the key switch on the ground controller to the
ON position.
4. Move and the hold the emergency power switch on
the ground controller.
5. Move the corresponding boom function switch on
the ground controller to lower the platform.
Operating from the platform：
1. Turn the Ground/Platform select switch on the
ground controller to the platform control position.
2. Pull out the emergency stop buttons on both the
ground and platform controllers to the ON position.
3. Turn the key switch on the ground controller to the
ON position.
4. Depress the footswitch, move and the hold the
emergency power switch on the platform controller.
5. Move the corresponding boom function switch on
the platform controller to lower the platform.
B-23 Inspect Tilt Protection
1. Start the machine.
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