Toro Sand Pro 3040 Service Manual page 104

Test Procedure (continued)
Hydraulic System: Testing the Hydraulic System
A. Isolate the front wheel motor from the traction circuit by disconnecting
both of the hydraulic hoses from the hydraulic tubes above the front wheel
motor. Cap the hydraulic tubes and connect the hydraulic tester to the 2
disconnected hoses. Make sure the tester is installed in the correct flow
direction and the tester flow control valve is fully open; refer to
g355159
1. Hydraulic tubes
2. Caps
B. Clean the hydraulic fittings and hydraulic tubes at each rear wheel motor.
C. Remove one of the rear wheel motors from the traction circuit by
disconnecting the two hydraulic lines at the motor. Cap the hydraulic
fittings and lines at the disconnected motor.
D. Start the engine and run it at low-idle speed. Correct any hydraulic fluid
leaks at the test connections before continuing the test.
E. 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).
F. Make sure hydraulic fluid is at normal operating temperature by operating
the machine for approximately 10 minutes.
G. Engage the parking brake.
H. Sit in the operator seat and slowly push the traction pedal in the forward
direction until 69.0 bar (1000 PSI) is displayed on the tester pressure
gauge.
I. The internal leakage for the connected wheel motor will be shown on the
flow meter. Record the test results.
J. Release the traction pedal, shut off the engine, and rotate the connected
wheel motor 90°. Test again and record the flow meter reading.
Figure 35
3. Hydraulic hose (forward direction pressure)
4. Hydraulic hose (forward direction return)
Page 5–34
Figure 35.
Sand Pro ® 3040 and 5040
20251SL Rev A