CHASSIS COMPONENT
0608ME All Maintenance Manual 35
© Jan. 2024
Replacement Requirements
• The tires and rims on the machine have been
designed and selected according to the overall
performance and load stability requirements of
the machine. Therefore, the model specifica-
tions, rim width, installation center surface, di-
ameter, etc. must not be changed, otherwise
this could lead to an unstable and hazardous
condition.
• Wheel-specific nuts must be used that match
the wheel bolts. The wheel nuts must be in-
stalled and maintained with the proper tighten-
ing torque to prevent loose rims, broken bolts
and wheels loosening from the axle. Be sure to
only use nuts that match the mounting angle
of the rim holes.
Hunan Sinoboom Intelligent Equipment Co., Ltd. recom-
mends the replacement tire be of the same size, ply rat-
ing and brand as the original tire. For the tire part
numbers of specific machine models, please refer to the
Parts Manual of the corresponding machine. If you
choose not to use the replacement tires recommended
by Hunan Sinoboom Intelligent Equipment Co., Ltd., the
following specifications should be adhered to:
• The ply rating/rated load capacity and size should be
the same as the original tire or superior to it.
• The tire tread contact width should be the same as
or superior to the original tire.
• The wheel diameter, width and offset dimensions
must be the same as the original tires.
• The replacement tire must be approved for the appli-
cation by the tire manufacturer (including intended
purpose, maximum travel speed, maximum tire load,
etc.).
• Due to size differences between different tire brands,
both tires on the same axle should be of the same
brand.
NOTICE
Unless specifically approved by Sinoboom, do not
replace foam-filled tires with pneumatic tires.
Replacing Tires
Tighten the wheel nuts to the specified torque to
prevent the wheel from loosening. Use a torque
wrench to tighten the nuts. If no torque wrench is
available use a socket wrench to tighten the nuts
and then immediately have a service station or
dealer tighten the nuts to the specified torque.
Over-tightening will cause the nuts to break or
permanently deform the bolt holes in the rims.
The correct steps to replace a tire are as follows:
1. Make sure the machine is in stowed position.
2. Press the main power switch/pull out the main
power handle and disconnect all power sources
(such as battery charger) from the machine.
3. Use a jack with sufficient load capacity to lift the ma-
chine to the appropriate height so that the wheel as-
sembly is off the ground.
4. Use suitable lifting equipment to safely support the
wheel assembly.
5. Remove the fasteners in an alternating sequence,
then remove the tire.
6. Align the mounting holes of the new wheelwith the
corresponding mounting holes on the hub,, fit the
flat surface of the gasket to the mounting surface(if
gaskets are used). After applying Loctite 272 threa-
dlocking adhesive to the bolts, install the bolts in se-
quence, and tighten the bolts diagonally to the
torque specified in Torque Specifications .
7. Remove the jack as needed after installation.
7.3 CHASSIS WEAR PADS
The chassis wear pads connecting with the scissor arm
is essential for the safe operation of the machine. As a
friction pair will develop between the wear pad and the
grooved steel surface of chassis while the platform is el-
evating or lowering. Improper wear pads or continued
use of extremely worn wear pads may result in compo-
nent damage and unsafe operation. It is recommended
to check the chassis wear pad thickness once a year or
after 1000 hours of operation.
1. Raise the platform appropriately to perform the fol-
lowing measurement.
2. As shown below, measure the distance from the
bottom surface of each wear pad at the scissor arm
sliding end to the center of the mounting axle hole.
3. Compare the measured value with the reference
distance (L) below. If the difference is greater than 3
mm (0.118 in) (i.e the wear extent of wear pad
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