Toro Reelmaster 3100-D Service Manual page 114

Traction Circuit Testing − Piston Pump/Hydrostat (P3) Flow and
Relief Pressure Test (continued)
Hydraulic System: Testing
Before jacking up the machine, review and follow
Instructions (page 1–7).
4. Raise off the floor and support both front wheels and the rear wheel.
g344857
1. Lower hydraulic fitting
5. Disconnect hose from the lower hydraulic fitting on the engine side of the
hydrostat (Figure 45).
6. Install the tester in series with the pump and the disconnected hose. Make
sure the tester flow control valve is fully open.
7. Start the engine. Move throttle to full speed (2650 ±50 RPM).
8. Make sure that the hydraulic fluid is at normal operating temperature by
operating the machine for approximately 10 minutes. Make sure the hydraulic
tank is full.
9. Verify with a phototach that the pump speed is approximately 3100 RPM.
10. Sit in the operator's seat, release the parking brake, and set the
Mow/Transport slide to the transport position.
Use extreme caution when performing hydrostat flow tests. The
traction unit wheels will be rotating during the test.
11. Verify the pump flow at No Load as follows:
A. Slowly depress forward traction pedal to full forward position.
B. Record tester pressure and flow readings. Unrestricted pump output
should be approximately 69 LPM (18 GPM) at 44.8 Bar (650 PSI).
12. Verify pump flow Under Load as follows:
A. Slowly depress forward traction pedal to full forward position.
WARNING
Figure 45
2. Piston pump
CAUTION
Page 5–38
Jacking
Reelmaster ® 3100-D/3105-D
20252SL Rev A