Test No. 4: Checking Steering Circuit Working Pressure Or Relief Pressure - Toro Groundsmaster 455-D Service Manual

TEST NO. 4: Checking Steering Circuit Working Pressure or Relief Pressure

WORKING Pressure Check:
1. Make sure hydraulic oil is at normal operating tem­
perature by operating machine for approximately 10
minutes.
2. Lower cutting units, engage parking brake and stop
the engine.
3. Raise and support the seat to get access to hydraulic
test fittings.
4. Install a 5000 PSI gauge onto steering circuit quick
disconnect fitting.
5. Operate machine while monitoring gauge.
RANGE OF TESTER READINGS 0 - 1300 PSI.
RELIEF Pressure Check:
6. With engine running, turn the steering wheel until
heavy resistance is felt indicating that the cylinder has
reached maximum stroke.
7. Momentarily hold steering wheel against resistance
and read gauge.
TESTER READING TO BE 1200 ± 100 PSI.
®
Groundsmaster 455-D
1. Steering circuit test port
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Figure 13
Testing