MAINTENANCE INSTRUCTIONS
TB20J Plus Maintenance Manual 31
© Feb. 2023
During machine maintenance, personal safety should
always be put first. Always take the weight of the parts
into consideration and never attempt to move heavy
parts without the assistance of mechanical equipment. It
is forbidden to place heavy objects in an unstable posi-
tion. Before lifting any machine parts, ensure the parts
are sufficiently supported.
Cleaning
1. The most important point to extend the service life
of the machine is to avoid dirt or impurities entering
the critical parts of the machine. Protective meas-
ures have been taken for the machine to prevent
such ingress. Protective plates, covers, seals, and
filters are installed to keep the air, fuel and oil supply
clean. However, in order to ensure that protective
measures function properly, they should be main-
tained at the prescribed interval.
2. When air, fuel, or oil lines are disconnected, adja-
cent areas, openings and fittings should be cleaned.
And immediately cover all openings to prevent for-
eign objects from entering.
3. During repair or maintenance, all components
should be cleaned and inspected, and all piping and
openings should be made clear. Cover all parts to
keep them clean. All parts must be clean before in-
stallation. New parts should be stored in containers
before use.
Components Disassembly and
Installation
1. A safe and reasonable plan should be developed for
the installation of machine components based on
this manual and the site conditions.
2. The personnel carrying out the disassembly and in-
stallation should have appropriate ability, and
should be able to use safety protection devices
correctly.
3. Before installation, qualified personnel should in-
spect the ground, all concealed foundations and an-
chors, or there should be reliable documentation
proving that the manufacturer's requirements are
met.
4. The wind speed at the installation site should not be
greater than 8.3m/s (18.6mph).
5. Before installation, check the site conditions such
as power supply, foundation and track to make sure
the installation requirements are met.
6. All components should be inspected prior to installa-
tion to verify they are in good condition.
7. High-strength bolts should be tightened in strict ac-
cordance with the requirements of this manual.
8. Acceptance of machine installed on site shall meet
the following requirements:
1) Relevant inspections and functional tests
should be carried out to confirm that the ma-
chine has been installed correctly, that specific
functional requirements are fulfilled and that all
safety components are operating properly.
2) Static and dynamic load tests should meet the
relevant standards.
3) Before putting the machine into service, the
qualified person shall issue a handover certifi-
cate confirming the integrity of the machine. All
test/inspection results should be recorded and
an inspection report should be prepared (includ-
ing the inspector’s name, title and company and
inspection date).
9. Machine disassembly should also meet the safety
requirements for installation.
10. If mechanical assistance is required when disas-
sembling the machine, reasonable lifting points,
spreaders and lifting equipment should be selected
as required by this manual and site conditions. Use
adjustable lifting devices whenever possible. All
spreaders (chains, slings, etc.) should be parallel to
each other and perpendicular to the tip of the part
being lifted whenever possible.
11. If a component with the assembly angle relative to
the support less than 90° needs to be removed, take
special care since the eye bolt or similar bracket
cannot provide adequate supporting force in such
case.
12. If certain component is difficult to remove, check
that all nuts, bolts, cables, brackets, wiring, etc.
have been removed, and that adjacent components
are not blocking removal.
Components Disassembling and
Reassembling
When disassembling or reassembling a component, fol-
low the steps one by one. If the disassembly or assem-
bly of one component has not been completed, do not
proceed with another component. Always review the
disassembly or assembly operation to make sure noth-
ing is missing. No adjustments (unless recommended)
may be made without prior approval.
Storage
Please follow the recommendations below to ensure the
best performance of cylinders and avoid corrosion due
to long-term storage (indoor/outdoor):
• The machine should be stored in stowed position
with all tires adjusted to keep aligned.
• Fully raise and lower the platform and steer left and
right twice a week to lubricate the cylinders.
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