Procedure for Lift and Steering Control Valve Relief
Pressure Test:
2
1.
perature by operating the machine for approximately 10
minutes.
Make sure hydraulic oil is at normal operating tem-
RIGHT
FRONT
2.
Parkmachineonalevelsurfacewiththecuttingunits
lowered and off. Make sure engine is off and the parking
brake is engaged.
3.
4.
Read Precautions for Hydraulic Testing.
1
Disconnect hose connection on gear pump (P2)
leading to the steering control valve (Fig. 34).
5.
discharge of the gear pump and the disconnected hose
leading to the steering control valve.
Install T--connector with test gauge in series with the
Figure 34
1.
Gear pump (P2)
2.
To steering control valve
6.
Make sure steering wheel is positioned so the rear
wheel points directly ahead.
7.
50
Start engine and move throttle to full speed (3050 +
RPM).
IMPORTANT: Do not allow pressure to exceed 1500
PSI.
IMPORTANT: Hold steering wheel at full lock only
long enough to get a system pressure reading.
Holding the steering wheel against the stop for an
extended period may damage the steering control
valve.
8.
steering wheel completely in one direction and holding.
Watch pressure gauge carefully while turning the
9.
System pressure should be from 845 to 995 PSI as
the relief valve lifts. Return steering wheel to the center
position. If specification is not met, shut off engine and
repair or replace steering control valve.
10.Disconnect
T--connector with test gauge from pump
connection andhose.Reconnect hydraulic hose togear
pump (P2).
Groundsmaster 3500--D
Page 4 -- 51
Hydraulic System (Rev. D)
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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| Tags | Toro Groundsmaster 3500 D |
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| Language | English |
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