Toro Reelmaster 3100-D Service Manual page 106

Traction Circuit Testing − Charge Pressure Test (continued)
Hydraulic System: Testing
g344856
1. Hydraulic hose
4. Disconnect the hydraulic hose at the piston pump/ hydrostat fitting near the
tow valve. This hose comes from the mower manifold CHG port
5. Install a T−connector and pressure gauge between the fitting and
disconnected hose.
g344857
1. Lower hydraulic fitting
6. Disconnect hose from the lower hydraulic fitting on the engine side of the
hydrostat (Figure 38).
7. Install tester in series with the pump and the disconnected hose. Make sure
that the tester flow control valve is fully open.
8. Attach a heavy chain to the rear of the machine frame and an immovable
object to prevent the machine from moving during testing.
9. Chock the wheels to prevent wheel rotation during testing.
10. Start engine. Move throttle to full speed (2650 ±50 RPM).
11. Make sure hydraulic fluid is at normal operating temperature by operating the
machine for approximately 10 minutes.
12. Verify with a phototach that the pump speed is approximately 3100 RPM.
Figure 37
2. Piston pump tow valve
Figure 38
2. Piston pump
Page 5–30
(Figure 37).
Reelmaster ® 3100-D/3105-D
20252SL Rev A