Toro Sand Pro 3040 Service Manual page 108

Test Procedure (continued)
Hydraulic System: Testing the Hydraulic System
g355127
1. Hydraulic tube
7. Disconnect the hydraulic hose at the hydraulic tube above the front wheel
motor. Use an additional hydraulic hose to install the tester to the exposed
fittings. Make sure the tester is installed in the correct flow direction (toward
the front wheel motor) and the tester flow control valve is fully open.
8. Start the engine and run it at low-idle speed. Correct any hydraulic fluid leaks
at the test connections before continuing the test.
9. Set the throttle to the full speed (3,400 to 3,500 RPM). Verify the engine
RPM at the drive hubs or rubber coupling with a non-contact tachometer
(phototach).
10. Make sure hydraulic fluid is at normal operating temperature by operating the
machine for approximately 10 minutes.
11. Sit in the operator seat and slowly push the traction pedal to the full F
position.
12. Verify the pump flow at No Load as follows:
A. Sit in the operator seat and slowly press the traction pedal to the fully
F position.
ORWARD
B. Unrestricted pump output should be approximately 51 LPM (13.5 GPM).
C. Record the tester pressure and flow readings.
13. Verify the pump flow Under Load as follows:
A. Slowly press the traction pedal to fully F
B. Apply an additional load of 8,274 to 12,410 kPa (1,200 to 1,800 psi)
by slowly closing the flow meter.
C. Record the tester pressure and flow readings under load.
14. Verify the forward traction relief valve operation as follows:
A. With the traction pedal in the N
flow control valve.
B. Slowly press the traction pedal toward the F
C. The system pressure should reach approximately 25,750 kPa (3,300 psi)
before the relief valve opens. Record the tester pressure reading.
Figure 37
2. Hydraulic hose
position, fully close the flow meter
EUTRAL
Page 5–38
position.
ORWARD
position.
ORWARD
Sand Pro ® 3040 and 5040
20251SL Rev A
ORWARD