Multi Pro 5700 - Toro
Multi Pro 5700 - Toro
Multi Pro 5700 - Toro
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Steering Control Valve and Steering Cylinder Test<br />
1. Make sure hydraulic oil is at normal operating temperature<br />
by operating the machine for approximately 10<br />
minutes.<br />
2. Perform the Steering Circuit Relief Pressure and<br />
Gear Pump Flow tests to make sure that relief valve and<br />
gear pump are functioning correctly.<br />
NOTE: This steering test procedure will be affected by<br />
incorrect tire pressure, binding of the hydraulic steering<br />
cylinder, excessive weight on the vehicle, and/or binding<br />
of the steering assembly (e.g. wheel spindles, tie rods).<br />
Make sure that these items are checked before proceeding<br />
with any hydraulic testing procedure.<br />
3. Drive machine slowly in a figure eight on a flat level<br />
surface.<br />
A. There should be no shaking or vibration in the<br />
steering wheel or front wheels.<br />
B. Steering wheel movements should be followed<br />
immediately by a corresponding front wheel movement<br />
without the steering wheel continuing to turn.<br />
4. Stop machine with the engine running. Turn steering<br />
wheel with small quick movements in both directions.<br />
Let go of the steering wheel after each movement.<br />
A. The steering must immediately return to the neutral<br />
position.<br />
B. The steering wheel or front wheels should not<br />
continue to turn.<br />
5. If either of these performance tests indicate a steering<br />
problem, determine if the steering cylinder is faulty<br />
using the following procedure.<br />
A. Park machine on a level surface with the spray<br />
system turned off.<br />
B. With the engine running, turn the steering wheel<br />
to the right (clockwise) until the steering cylinder rod<br />
is fully contracted.<br />
C. Turn engine off and engage the parking brake.<br />
D. Read Precautions for Hydraulic Testing.<br />
E. Clean and remove hydraulic hose from the fitting<br />
on the barrel end of the steering cylinder. Plug the<br />
end of the disconnected hose.<br />
WARNING<br />
Keep body and hands away from disconnected<br />
hoses and fittings that might eject hydraulic fluid<br />
under high pressure. Use paper or cardboard,<br />
not hands, to search for leaks. Hydraulic fluid escaping<br />
under pressure can have sufficient force<br />
to penetrate the skin and cause serious injury. If<br />
fluid is injected into the skin, it must be surgically<br />
removed within a few hours by a doctor familiar<br />
with this type of injury. Gangrene may result from<br />
such an injury.<br />
IMPORTANT: Do not turn steering wheel to the<br />
left (counterclockwise) as system damage may<br />
occur.<br />
F. With the engine off, continue turning the steering<br />
wheel to the right (clockwise) with the steering cylinder<br />
fully contracted. Observe the open fitting on the<br />
steering cylinder as the wheel is turned. If oil comes<br />
out of the fitting while turning the steering wheel to<br />
the right, the steering cylinder has internal leakage<br />
and must be repaired or replaced.<br />
G. Remove plug from the disconnected hydraulic<br />
hose. Reconnect hose to the steering cylinder.<br />
6. If steering problem exists and the steering cylinder,<br />
steering circuit relief valve pressure and gear pump flow<br />
tested acceptably, steering control valve requires service<br />
(see Steering Control Valve and Steering Control<br />
Valve Service).<br />
Hydraulic<br />
System<br />
<strong>Multi</strong> <strong>Pro</strong> <strong>5700</strong>–D Page 4 – 21 Hydraulic System
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