Cutting Unit Down Limit Switch - Toro Reelmaster 5410 Series Service Manual

Cutting Unit Down Limit Switch

Testing the Down Limit Switch
Electrical System: Testing the Electrical Components
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1. Switch LED location
2. Down limit switch
The cutting unit down limit switch is a normally open proximity switch that closes
when the front, outside cutting units are in the turn-around position. The down
limit switch is attached to a frame bracket inside the front, right lift arm pivot
tube. A bracket on the front, right lift arm acts as the sensing plate for the down
limit switch (Figure 249).
The Toro Electronic Controller (TEC) monitors the operation of the cutting unit
down limit switch.
1. Park the machine on a level surface, lower the cutting units, set the parking
brake, and shut off the engine.
2. Before you disconnect the down limit switch for testing, ensure that you test
the switch and its circuit wiring as a TEC electrical input with the InfoCenter
display; refer to Using the InfoCenter Display for Troubleshooting (page
7–28).
3. If the InfoCenter verifies that the down limit switch and circuit wiring are
functioning correctly, no further switch testing is necessary.
4. If the InfoCenter determines that the down limit switch and circuit wiring are
not functioning correctly, proceed with the test.
5. Locate the down limit switch
6. Turn the key switch to the R
the LED on the cable end of the down limit switch.
7. The down limit switch LED should be illuminated when the cutting units are
lowered. The LED should not be illuminated when the cutting units are raised
to the turn-around position.
8. If the down limit switch LED did not function correctly, do the following:
A. Ensure that the down limit switch is properly adjusted; refer to
the Cutting Unit Down Limit Switch (page
switch and return to step 6.
Figure 249
3. Lock washer (2 each)
4. Jam nut (2 each)
(Figure 249).
position (do not start the engine) and check
UN
Page 7–76
5. Lift arm
6. Bracket
Adjusting
7–51). If necessary, adjust the
Reelmaster ® 5410/5510/5610 Series
15216SL Rev C