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MAINTENANCE
GUIDE TO MAINTENANCE
When inspecting or changing the oil, move the machine to a place that is free of dust to prevent dirt from getting
into the oil.
AVOID MIXING OILS:
If a different brand or grade of oil has to be added, drain the old oil and replace all the oil with the new brand or grade
of oil. Never mix different brand or grade of oil.
LOCKING THE INSPECTION COVER:
Lock inspection cover securely into position with the lock bar. If inspection or maintenance is performed with
inspection cover not locked in position, there is a danger that it may be suddenly blown shut by the wind and cause
injury to the worker.
HYDRAULIC SYSTEM - AIR BLEEDING:
When a hydraulic component is repaired or replaced, or when a hydraulic piping is removed, bleeding air from the
hydraulic circuit is required. See the section of AIR-BLEEDING FROM HYDRAULIC CIRCUIT (PAGE 4-8) for the
air bleeding.
HYDRAULIC HOSE INSTALLATION:
When removing parts at locations where there are O-rings or gasket seals, clean the mounting surface, and
replace with new parts.
When doing this, be careful not to forget to assemble the O-rings and gaskets.
When installing the hoses, do not twist or bend them into loops with a small radius.
This will cause damage to the hose and drastically reduce its service life.
CHECK AFTER INSPECTION AND MAINTENANCE WORKS:
If you forget to perform the checks after inspection and maintenance, unexpected problems may occur, and this may
lead to serious injury or property damage. Always do the following:
Checks after operation (with engine stopped)
Have any inspection and maintenance points been forgotten?
Have all inspection and maintenance items been performed correctly?
Have any tools or parts been dropped inside the machine? It is particularly dangerous if parts are dropped
inside the machine and get caught in the lever linkage mechanism.
Is there any leakage of coolant or oil? Have all nuts and bolts been tightened?
Checks when operating engine
For details of the checks when operating the engine, see "PROPER TOOLS (PAGE 2-33)" and pay careful
attention to safety.
Are the inspection and maintenance items working properly?
Is there any leakage of fuel or oil when the engine speed is raised?
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