© Feb. 2023 30 TB20J Plus Maintenance Manual
MAINTENANCE INSTRUCTIONS
Table 4-2 Inspection and Preventative Maintenance Schedule (Continued)
Items
Intervals
Before each
delivery
1
or
quarterly
2
Semiannually
3
Annually
4
Note:
1
Before each sale, lease or shipment;
2
In service for 3 months or 250 hours; or out of service for more than 3 months;
3
In service for 6 months or 500 hours;
4
Once a year and no later than 13 months from the date of the prior annual machine inspection;
50
The first inspection work shall be performed after the machine has been in service for 50 hours for the first time.
This only happens once in the service life of the machine;
250
The first inspection work shall be performed after the machine has been in service for 250 hours for the first
time. This only happens once in the service life of the machine;
NO.1
Before the machine is put into service for the first time, or before the first use after the oscillating cylinder or
counterbalance valve is replaced.
Performance code:
1. Check for correct installation (accurate position, firmly installed, tightened according to the specified torque)
2. Visual inspection for damage (cracks, cracked welds, deformation, wear, corrosion, excessive wear, gouges,
abrasions and exposed threads)
3. Check for normal function
4. Return to neutral position or “off” position normally (the self-reset switch can return to neutral position or “off”
position after released)
5. Clean and free of foreign objects
6. Check for correct sealing, leaking and level
7. Labels complete, clear and secure
8. Check for appropriate tolerances
9. Fully charged
10.Validation/Execution
11. Replace the oil or filter element
12.Correctly lubricated
4.2 GENERAL MAINTENANCE
INSTRUCTIONS
Safety and Operating Standards
Before adjusting and repairing the machine, the follow-
ing precautions should be taken:
1. Cut off the power source to make the machine un-
able to start, and have the machine marked.
2. All controls should be turned off to avoid accidental
actuation of the operating system.
3. If possible, lower the work platform to the lowest po-
sition; if not possible, ensure that the work platform
will not fall.
4. Before loosening or removing the hydraulic compo-
nents, the hydraulic oil pressure in the hydraulic
lines should be released.
Some maintenance work may require the machine to be
in a state other than those described in 1-4 above, and
such work should be carried out in accordance with the
specific safety measures listed in the Operation Manual
and this manual.
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