SERVICE AND GUIDELINES
GTTZ10EJ Maintenance Manual 4-3 © Mar. 2022
1. Cut off the power source to disable the machine
and set up a sign in a readily visible place.
2. Place all controls in OFF position to prevent
unintended activation of the controls.
3. Lower the platform to the lowest position if possible,
or at least ensure it won’t fall off.
4. Before releasing or removing any hydraulic
component, dissipate the hydraulic pressure in the
hydraulic circuit.
If the machine is not serviced in the state as above for
the sake of the particular nature of the maintenance
task, it should at least observe the safety rules
regarding the maintenance and repair of the machine
contained in this manual and the Operation Manual.
Your safety, and that of others, is the first consideration
when engaging in the maintenance of equipment.
Never attempt to move heavy parts without the aid of a
mechanical device. Do not allow heavy objects to rest
in an unstable position. When raising a portion of the
equipment, ensure that adequate support is provided.
CLEANLINESS
1. The most important single item in preserving the
service life of a machine is to keep dirt and foreign
materials out of the vital components. Precautions
have been taken to safeguard against this. Shields,
covers, seals and filters are provided to keep air,
fuel and oil supplies clean; however, these items
must be maintained on a scheduled basis to
function properly.
2. When air, fuel or oil lines are disconnected, clean
the adjacent areas as well as the openings and
fittings. As soon as a component or line is
disconnected, cap or cover all openings to prevent
entry of foreign matter.
3. Clean and inspect all parts during servicing and
maintenance, and assure that all passages and
openings are unobstructed. Cover all parts to keep
them clean. Be sure all parts are clean before they
are installed. New parts should remain in their
containers until they are ready to be used.
COMPONENT REMOVAL AND
INSTALLATION
1. Establish as per this manual a safe and reasonable
program appropriate to the on-site conditions for
installation of the machine.
2. The personnel engaging in disassembly and
installation of this machine should be competent in
the task and understand how to use the personal
protection equipment in a correct manner.
3. The qualified personnel should not install the
machine unless a thorough inspection of the ground
for installation, the hidden foundation as well as the
anchored parts is made or sufficiently evidenced to
comply with the manufacturer’s requirements.
4. The wind speed at the installation location should
not be more than 8.3m/s.
5. Check the on-site conditions like power supply,
foundation, track, etc., and install only when all are
eligible.
6. All parts should be checked before installation to
verify they are in good condition.
7. The high-strength bolts should be tightened as
required in this manual.
8. The requirements for the reception of the on-site
installed machine are as follows:
• Conduct the required inspection and function
test to confirm the machine is properly installed
for the purpose of the particular application and
all safety devices operate smoothly.
• The static and dynamic load tests of the
machine suggest a compliance with the relevant
standard.
• The qualified personnel should sign on the
handover document to evidence the integrity of
the machine. All inspection/test results should
be documented (including the inspector name,
title, organization and date).
9. The disassembly of the machine should also follow
the same safety requirements for the installation of
the machine.
10. If mechanical assistance is required for the
disassembly of the machine, please choose the
suitable lifting points, lifting tools, and lifting
equipment according to this manual and the onsite
conditions. The lifting equipment that allows
adjustment is preferred. All lifting tools (chains,
sling, etc.) should be parallel to each other and
should better remain vertical to the top of the
component being lifted.
11. Should it be necessary to remove a component on
an angle, keep in mind that the capacity of an
eyebolt or similar bracket lessens, as the angle
between the supporting structure and the
component becomes less than 90 degrees.
12. If a part resists removal, check to see whether all
nuts, bolts, cables, brackets, wiring, etc., have been
removed and that no adjacent parts are interfacing.
COMPONENT DISASSEMBLY AND
ASSEMBLY
When disassembling or reassembling a component,
complete the procedural steps in sequence. Do not
partially disassemble or assemble one part, then start
on another. Always recheck your work to assure that
nothing has been overlooked. Do not make any
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