(7) Use proper tools, and replace or repair defective tools.
(8) Support the machine and attachment with supports or blocks if the work is performed in the lifted
condition.
1.1.3
DISASSEMBLING AND ASSEMBLING HYDRAULIC EQUIPMENT
(1) Removing hydraulic equipment
1.
Before disconnecting pipes, release the hydraulic pressure of the system, or open the return side
cover and take out the filter.
2.
Carefully drain oil of the removed pipes into a containers without spilling on the floor.
3.
Apply plugs or caps on the pipe ends to avoid oil spillage and dust intrusion.
4.
Clean off the external surface of the equipment before disassembling, and drain hydraulic and gear
oil before placing it on the workbench.
(2) Disassembling hydraulic equipment
1.
Do not disassemble, reassemble or modify the hydraulic equipment without the permission of the
manufacturer, who is not responsible for the performance and function of the product after
modification.
2.
When disassembling and reassembling for unavoidable reason, refer the work to qualified
personnel who have the specific knowledge or completed the parts service training.
3.
Provide matching marks to facilitate reassembling work.
4.
Before starting the work, read the manual of disassembling procedure, if it is provided, and
decide whether the work can be performed by yourself.
5.
Use the special jig and tools without fail if they are specified.
6.
If it is hard to remove a part according to the procedure, do not try it by force but investigate the
cause.
7.
Place the removed parts in order and attach tags to facilitate the reassembling.
8.
Note the location and quantity of parts commonly applied to multiple locations.
(3) Inspecting parts
1.
Ensure that the disassembled parts are free from seizure, interference and uneven contact.
2.
Measure and record wear condition of parts and clearance.
3.
If the problem is found in a part, repair or replace it with a new one.
(4) Reassembling hydraulic equipment
1.
Turn ON the ventilation fan or open windows to maintain good ventilation prior to starting the
cleaning of parts.
2.
Perform rough and finish cleaning before assembling.
3.
Remove washing oil by air and apply clean hydraulic or gear oil for assembling.
4.
Always replace the removed O-rings, backup rings and oil seals with new ones by applying grease
in advance.
5.
Remove dirt and moisture from and perform degreasing on the surface where liquid gasket to be
applied.
6.
Remove rust preventive agent from the new parts before use.
7.
Fit bearings, bushings and oil seals using special jigs.
8.
Assemble the parts utilizing matching marks.
9.
Ensure all the parts are completely assembled after the work.
㨇
1. OUTLINE
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