Y-4
Y-4
Air Bleeding Procedure Y-4
Air Bleeding Procedure
1.2 Main pump
1. Hydraulic pump
1. Fill the oil tank with hydraulic oil. (If the suction section was disassembled for repair or other
[NOTICE]
reasons, bleed air from the air-bleed plug on the
Be sure that the following conditions are met before starting the engine. • PTO : OFF • Air conditioner : OFF • Oil cooler : OFF
suction side, as described above.) 2. Bleed the pump case. Remove the drain plug or the drain hose of the pump. Pour the hydraulic oil into this drain port until the
The following is also possible: After performing step 3 under 1.1, perform step 2 under 1.2. Start the engine, then turn ON the PTO, and run-in the pump for 10 minutes.
oil overflows, then tighten the plug.
1.1 Steering and winch brake pilot pressure pump (double gear pump) 1. Fill the oil tank with hydraulic oil. 2. With the engine stopped, loosen the air-bleed plug (G1/4) on the suction flange of the pump. After bleeding air from the suction side, tighten the plug again.
3. Start the engine with PTO ON, and run-in the
3. Start the engine (with air conditioner, oil cooler
pump at idle for 5 minutes.
and PTO OFF) and run it at idle (approximately -1
700 min ) for 1 minute to bleed the circuit. 4. Start the engine, and run-in the pump for 10 minutes at idle.
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WY05-3162E
