Toro ProLine H800 Service Manual page 115

Test Procedure (continued)
ProLine H800
19241SL Rev A
Ensure that the fluid flow indicator arrow on the flow meter is
showing that the fluid will flow from the pump, through the tester,
and into the disconnected hydraulic hose.
9. Place a steel cap on T fitting to block the hydraulic fluid flow to front right and
rear right wheel motors
end of the disconnected hose to prevent leakage or contamination.
10. Install the tester with pressure gauge in series with the pump and
disconnected hose of rear left and front left motors
the tester is installed in the correct flow direction and the tester flow control
valve is open.
11. Use the hydraulic hose kit to connect tester to the machine; refer to
Tools (page 2–15). Ensure that the fitting and hose connections are properly
tightened. Also, ensure that the flow control valve on the tester is fully open.
During this procedure, all the wheels will be off the ground and
rotating. Ensure that the machine is well supported so it will not
move and accidentally fall to prevent injuring anyone around the
machine.
12. Start the engine and run it at low-idle speed. Check for hydraulic-fluid leaks
from the test connections and correct before continuing the test.
13. With the engine running, move the throttle to full speed (3,210 rpm) position.
Use a phototac to check that the engine speed is correct.
14. Verify the pump flow at no load as follows:
A. Slowly press the traction pedal to fully forward position.
B. Record the tester pressure and flow readings at no load. Unrestricted
pump output should be approximately 63 LPM (16.7 GPM).
15. Verify the pump flow under load as follows:
A. Slowly press the traction pedal to fully forward position, and keep the
pedal pressed full forward.
B. Apply an additional load of 150 to 170 bar (2,175 to 2,465 psi) by slowly
closing the flow meter.
C. Record the tester pressure and flow readings under load.
16. Verify the traction relief valve operation as follows:
A. Return the traction pedal to the NEUTRAL position.
B. Fully close the flow meter flow control valve.
C. Slowly set the traction pedal to full forward position.
D. Record the tester pressure reading.
The system pressure should reach 280 bar (4061 psi) before the relief
valve opens.
Note: The relief valve setting is 285 bar (4133 psi). An additional 5
bar (70 psi) is necessary to overcome system charge pressure before
the relief valve opens.
IMPORTANT
(Figure 54). Also install the steel plugs in the open
CAUTION
Page 5–47 Hydraulic System: Testing the Hydraulic System
(Figure 54). Make sure
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