Toro Groundsmaster 360 Service Manual page 122

Test Procedure (continued)
Hydraulic System: Testing the Hydraulic System
8. Start the engine and run it at low-idle speed (1,400 rpm). Check for
hydraulic-fluid leaks from the test connections and correct before continuing
the test.
9. With the engine running, press the engine speed switch to full speed (3,000
rpm) position.
10. Monitor the tester pressure gauge carefully while you slowly close the flow
control valve until you get 6,900 kPa (1,000 psi). Do not close the tester
load valve fully.
11. Check with a phototac that the engine speed remains 3,000 rpm while
maintaining 6,900 kPa (1000 psi) on the tester pressure gauge.
12. Monitor the flow gauge. The flow indication for a pump in good condition is
19.7 L/minute (5.2 gallons/minute).
13. Open the tester load valve and then shut off the engine. Record the test
results.
14. A lower pump flow may result in reduced steering and lift/lower circuit
performance. If the measured flow is less than 16.6 L/minute (4.4
gallons/minute) or a pressure of 6,900 kPa (1,000 psi) cannot be obtained,
check for restriction in the pump inlet line. If the inlet line is not restricted,
remove the gear pump and repair or replace as necessary.
Note: The implement relief valve pressure can also be tested with a
hydraulic tester (pressure and flow) in series with the gear pump fitting and
disconnected hose. Use the pressure gauges on the hydraulic tester and
follow Testing the Implement Relief Pressure (Using Pressure Gauge) (page
4–59).
15. Release pressure from the hydraulic system; refer to
from the Hydraulic System (page
16. Disconnect the tester from the deck lift manifold fitting and hydraulic hose,
and connect the hose to the control valve fitting.
4–5).
Page 4–64
Releasing Pressure
Groundsmaster 360
16225SL Rev C