Toro Greensmaster 3200 Service Manual page 95

Procedure for Hydrostat Flow (P3) Check:
1. Make sure hydraulic oil is at normal operating tem-
perature by operating the machine for approximately 10
minutes.
2. Make sure machine is parked on a level surface with
the cutting units lowered and off. Make sure engine is
off.
3. Read Precautions for Hydraulic Testing.
4. Make sure that traction pedal is adjusted to the neu-
tral position (see Traction Pedal in the Adjustments Sec-
tion).
5. Block up one front traction wheel off the floor to allow
flow through the traction circuit; disconnect brake link-
age to this wheel (see Wheels and Brakes – Chapter 7).
6. If the unit is equipped with 3WD, make sure rear
wheel is blocked up to prevent the machine from mov-
ing.
7. Chock remaining wheels to prevent movement of
the machine.
8. Attach a heavy chain to the rear of the machine
frame and something solid in the shop.
9. Make sure parking brake is on.
10. Disconnect hose from the upper hydraulic fitting on
the front side of the hydrostat.
11. Install tester in series with the hydrostat and the dis-
connected hose. Make sure the flow control valve is fully
open.
12. Make sure mode selector is in the transport position.
13. Start engine and move the throttle to full speed.
A. Units with diesel engine (3025 + 50 RPM)
B. Units with gasoline engine (2800 + 28 RPM)
Greensmaster 3200/3200–D
Use extreme caution when taking gauge
readings. The front tire on the ground will
be trying to move the machine forward.
14. Slowly push traction pedal into fully forward posi-
tion.
15. Close flow control valve until pressure gauges read
1000 PSI. Verify pump speed with a phototac.
A. Units with diesel engine (3025 + 50 RPM)
B. Units with gasoline engine (2800 + 28 RPM)
16. Observe flow gauge. TESTER READING should
be:
A. Units with diesel engine: minimum flow 14.6
GPM
B. Units with a gasoline engine: minimum flow 13.5
GPM
17. Release traction pedal and turn off machine.
18. Disconnect tester from pump connection and hose.
Reconnect hose to pump connection.
19. If specifications are not met consider the following:
A. The hydrostat needs to be repaired or replaced
as necessary.
B. The traction pedal and traction speed may need
adjustment (see Traction Pedal in the Adjustments
Section).
20. Reconnect brake linkage to wheel (see Wheels and
Brakes – Chapter 7).
Rev. C
Page 5 – 23
CAUTION
Hydraulic System