Measuring The Main Pump Max. Flow Rate - Kubota KX080-3 Workshop Manual

WSM KX080-3 Service
i. Measuring the main pump Max. flow rate
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[Precautions]
1. Park the machine on a flat, solid ground.
2. Connect a vacuum pump.
3. Disconnect the hose from port P (delivery).
4. Connect joint A and measuring hose to pipe joint
T of the pump (port P). Connect the other end of
the hose to the IN socket of a flowmeter.
5. Connect joint B and measuring hose to the hose
at port P (delivery). Connect the other end of the
hose to the OUT socket the flowmeter.
6. Disconnect hose Pps and attach plug (1/4) to
this hose's end. Keep joint Pps (at the pump)
intact. (Place an oil pan to receive out-coming
oil.)
* This is because the pump's swash plate is
fixed at its maximum tilt angle.
7. Detach plug (1/4) at port P and hook up a pres-
sure gauge(at point A).
* This is because the flowmeter's readings fluctu-
ate depending on the size of a measuring hose.
8. Disconnectthe vacuum pump.
9. Air-bleed the pump according to the air bleeding
procedure.
10. Fully open the flowmeter's loading valve and start
the engine. Finally make sure there is no oil leak
at the pressure gauge connection.
1) Pump 1 delivery hose
2) Pump 2 delivery hose
3) Pump 3 delivery hose
4) P sensing line hose
PS
5) P sensing line hose
LS
IV-S-48
Hydraulic system