Toro Greensmaster 3120 Service Manual page 114

Steering/Lift Circuit Testing – Steering Control Valve and
Steering Cylinder Test (continued)
Hydraulic System: Testing the Hydraulic System
B. Steering wheel movements should be followed immediately by a
corresponding rear wheel movement without the steering wheel
continuing to turn.
4. Stop unit with the engine running. Turn 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 should return to the
neutral position with no additional turning.
5. If either of these performance tests indicate a steering problem, determine if
the steering cylinder is faulty using the following procedure.
A. Park machine on a level surface with the parking brake engaged.
B. With the engine running, turn the steering wheel to the right (clockwise)
until the steering cylinder rod is fully extended and turn the engine OFF.
C. Read and adhere to the information provided in
System (page 4–35).
g217184
1. Steering cylinder
D. Disconnect the hydraulic hose from the fitting on the rod end of the
steering cylinder. Plug the disconnected hose.
E. With the engine OFF, continue turning the steering wheel to the right
(clockwise) with the steering cylinder fully extended. Observe the open
fitting on the steering cylinder as the wheel is turned. If hydraulic fluid
comes out of the fitting while turning the steering wheel to the right, the
steering cylinder has internal leakage and must be repaired or replaced.
F. Remove plug from the hydraulic hose and reconnect the hose. Make sure
the hydraulic hoses do not contact any moving parts as the caster fork
moves from stop to stop.
Figure 46
2. Rod end hydraulic hose
Page 4–68
Testing the Hydraulic
Greensmaster 3120
17230SL Rev C