1. REMOVAL AND INSTALL
Lower the work equipment to the ground
and stop the engine.
Operate the control levers and pedals
several times to release the remaining
pressure in the hydraulic piping
Loosen the breather slowly to release the
pressure inside the hydraulic tank.
Escaping fluid under pressure can
penetrate the skin causing serious
Loosen the drain plug under the hydraulic
tank and drain the oil from the hydraulic
Â Hydraulic tank quantity : 37˶
Disconnect hoses(79, 80) and remove
Disconnect pilot line hoses(21, 90) and
remove connectors(49, 54).
Remove socket bolts(28) and disconnect
pump suction tube(9).
When pump suction tube is disconnected,
the oil inside the piping will flow out, so
catch it in oil pan.
Sling the pump assembly and remove the
pump mounting bolts.
ÂWeight : 25kg(55lb)
Pull out the pump assembly from housing.
When removing the pump assembly,
check that all the hoses have been
GROUP 3 PUMP DEVICE
Carry out installation in the reverse order
Remove the suction strainer and clean it.
Replace return filter with new one.
Remove breather and clean it.
After adding oil to the hydraulic tank to the
Bleed the air from the hydraulic pump.
Remove the air vent plug(1EA).
Tighten plug lightly.
Start the engine, run at low idling, and
check oil come out from plug.
Start the engine, run at low idling(3~5
minutes) to circulate the oil through the
Confirm the hydraulic oil level and check
the hydraulic oil leak or not.
1-5 Ring retaining
2 Swash plate assy
2-1 Swash plate
2-2 Suction side guide
2-3 Suction side bushing
2-4 Delivery side guide
2-5 Delivery side bushing
3 Rotary group
3-1 Piston assy
3-2 Cylinder block