Tadano TR-800XXL4, Service Manual

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Y - 3 Y - 3
Air Bleeding Procedure
11
WY05-0581E
Y-3 Air Bleeding Procedure
1. Starting pump
1.1 Before starting the engine
Make sure that
• PTO switch is turned OFF.
• The oil cooler is not functioning (due to the
hydraulic oil temperature below 50°C (122°F)).
1.2 Shakedown of the pump
1) Steering, winch brake pilot pressure pump
(double gear pumps)
1. Fill the oil tank with hydraulic oil.
2. With the engine stopped, loosen the air-bleed plug
on the suction flange of the main pump. After
bleeding air from the suction side, tighten the plug
again.
3. Start the engine (with PTO OFF) and run it at idle
(approx. 700 min
-1
) while bleeding the air from the
circuit for 1 minute.
4. Start the engine, and run-in the engine for 10
minutes at idle.
2) Main pump
1. Fill the oil tank with hydraulic oil. (If the suction
section was disassembled for repair or other
reasons, bleed air from the air-bleed plug on the
suction side, as described above.)
[NOTICE]
If the tank is to be pressurized, pressurize it at a
pressure of 15 kPa {2.2 psi} or less.
2. Bleed the air from the pump case. Remove the
drain plug or drain hose from the pump. Inject oil
into this location until it overflows, then reinsert
the plug.
3. Start the engine, with PTO ON, and run-in the
engine at idle for 5 minutes.
3) Others
• After the shakedown of the pump, do not let the
engine speed exceed the middle range (1000
min
-1
) if you bleed the cylinders.
When you try to raise the oil temperatuer in
order to adjust the hydraulic pressure, make
sure that there is no bubbles caused by the
bleeding in the tank.