Testing The Steering Circuit (Model 08745 Only) - Steering Cylinder Internal Leakage - Toro Sand Pro 3040 Service Manual

Testing the Steering Circuit (Model 08745 only) – Steering Cylinder
Internal Leakage
Test Procedure
Hydraulic System: Testing the Hydraulic System
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Steering Circuit (Model 08745 only) – Steering Cylinder Internal Leakage Test
Unit steering performance will be affected by incorrect front tire pressure, binding
in the hydraulic steering cylinder, extra weight on the vehicle, and/or binding of
the steering linkage or front fork. Ensure that these conditions are checked and
functioning properly before proceeding with any steering system hydraulic testing.
Note: The relief valve for the steering circuit is integrated into the steering
control valve.
1. Ensure that the hydraulic fluid is at normal operating temperature by
operating the machine for at least 10 minutes.
2. Drive the machine slowly in a figure eight on a flat level surface.
A. There should be no shaking or vibration in the steering wheel or front
wheel.
B. The steering wheel movements should be followed immediately by
a corresponding front wheel movement without the steering wheel
continuing to turn.
3. Stop the unit with the engine running. Turn the steering wheel with small
quick movements in both directions. Let go of the steering wheel after each
movement.
A. The steering control valve should respond to each steering wheel
movement.
B. When steering wheel is released, steering control valve should return to
the neutral position with no additional turning.
4. Determine if the steering cylinder has internal leakage using the following
procedure:
Figure 40
Page 5–44 Sand Pro ® 3040 and 5040
20251SL Rev A