DISASSEMBLY AND ASSEMBLY
HYDRAULIC TANK
4
4
HYDRAULIC TANK 4H0AX00
Bleeding off the air
Important: After replacing the hydraulic oil, bleed the air
from the hydraulic circuits and hydraulic devices. Failure
to do so may damage the hydraulic devices.
1. Start the engine, and let it idle.
2. Slowly allow each cylinder to start running to release
the air in the piping.
• Continue bleeding off the air from the piping until
the cylinders begin running as directed.
3. Release the air in each cylinder.
With the engine running at slow speed, extend and
retract the cylinder 4 or 5 times.
• Move the piston rod to a position 100 mm (3.9 in.)
before the end of the stroke, being careful not to
allow any air to be released.
4. With the engine running at top speed, complete the
operation outlined in “a”, and then, with the engine
running at low speed, move the piston rod to the
stroke end to bleed off the air in the cylinder.