SUPPLEMENTAL STEERING SYSTEMS OPERATION
The supplemental steering system provides
hydraulic oil flow to the steering system if the engine fails
or implement hydraulic flow is lost while the machine is
BEFORE ENGINE START-UP
SUPPLEMENTAL STEERING WARNINGS
4. Motor status light. 5. Indicator LED. 6. Master fault light.
Until the engine is started, an Electronic Monitoring
System (E.M.S.) indicator LED (5) and master fault light
(6) will FLASH. This indicates that the S.S. electronic
control module is not activated. The module becomes
activated after the engine is started.
1. Disconnect switch.
COMBINATION VALVE (PARTIAL)
SUPPLEMENTAL STEERING MOTOR AND PUMP
7. Primary system pressure switch. 8. Combination valve (partial).
2. Motor. 3. Pump.
After the three second power up test, the operator starts
When the disconnect switch (1) is turned ON, the
the engine. As the engine comes up to speed, the
supplemental steering (S.S.) system performs a three
primary steering hydraulic system pressure closes a
second power-up test. For three seconds, the electronic
normally open pressure switch (7). Also, alternator "R"
control will turn ON the S.S. motor (2) [which operates
terminal (9) voltage rises to approximately 12 volts. The
pump (3)] and motor status light (4). The operator should
S.S. electronic control module senses (feels) both
be able to steer with normal effort during the three
pressure switch (7) closing and "R" terminal (9) voltage,
second test to make sure the front wheels turn. During
and does the following:
this three seconds, the S.S. motor status light is also