Magnet Assembly - Cruise Control; Microswitches - Toro 315-8 User Manual

Magnet Assembly - Cruise Control

Figure 8
Purpose
When engaging cruise control, the magnet assembly
engages a cruise control plate that locks the control
linkage to the speed that is set (Figure 8).
How it Works
When the desired forward speed is obtained, push the
cruise control switch on the dash. Through a cruise
control relay, 12 volts is sent to the magnet assembly
and this locks the magnet to the cruise control plate
and locks the traction control. This allows you to
remove your foot from the traction control.
Testing
1. Unplug the wires and remove the magnet
assembly from the tractor.
2. Place the magnet assembly on a metal surface
and apply 12 volts D.C. positive and negative to
the wire leads.
3. The magnet assembly should hold to the metal
surface. When voltage is removed, the magnet
assembly can be removed from the metal surface.
Demystification Glossary

Microswitches

mvc-123
Purpose
Microswitches are used to monitor whether or not a
lever or pedal is in the correct position (Figure 9).
How It Works
This SPDT (Single Pole Double Throw) microswitch
has three terminals. The lever is spring loaded in the
"up" position. When the button is pushed down,
continuity switches from COM and NC to COM and
NO.
Testing
1. Disconnect the switch from the harness.
2. Using an ohmmeter (ohm), connect one meter
lead to the "COM" terminal, and other lead to the
"NC" terminal.
3. With the switch in the spring loaded "up" position,
there should be continuity; the switch is operating
properly. Push the button "down". There should
be no continuity; the switch is operating properly.
4. Connect one meter lead to the "COM" terminal
and the other lead to the "NO" terminal.
5. With the button in the "OUT" spring loaded
position, if there is no continuity, the switch is
operating properly.
6. Then move the switch button to the "down"
position. If there is continuity, the switch is
operating properly.
GLOSSARY
Figure 9
mvc-677X
3 - 7