Lower/Raise Control Lever Switches - Toro Reelmaster 3550-D Preliminary Service Manual

Lower/Raise Control Lever Switches

The cutting unit raise and lower switches are located on
the joystick assembly that is attached to the control pan-
el. The rear switch is used to lower the cutting units and
the front switch to raise them (Fig. 19). The switches are
identical and are shown in Figure 20.
NOTE: The cutting units will not lower when the mow/
transport slide is in the TRANSPORT position.
Testing
1. Park machine on level surface, lower cutting units,
stop engine, apply parking brake and remove key from
ignition switch.
2. Before disconnecting the raise and lower switches
for testing, the switches and their circuit wiring should be
tested as TEC electrical inputs using the Diagnostic Dis-
play (see Diagnostic Display in the Troubleshooting sec-
tion of this chapter). If input testing verifies that the raise
and lower switches and circuit wiring are functioning
correctly, no further switch testing is necessary. If, how-
ever, input testing determines that the raise and lower
switches and circuit wiring are not functioning correctly,
proceed with the following switch testing procedure.
3. Remove cover from control panel to gain access to
raise and lower switches on joystick assembly.
4. Make sure ignition switch is in the OFF position. Dis-
connect wire harness connectors from raise and lower
switches on joystick assembly.
5. Check the continuity of the raise switch by connect-
ing a multimeter (ohms setting) across the switch con-
nector terminals as follows:
A. With the joystick in the neutral position, continuity
should only exist between the common and NC ter-
minals.
B. With the joystick in the raise position, continuity
should only exist between the common and NO ter-
minals.
6. Check the continuity of the lower switch by connect-
ing a multimeter (ohms setting) across the switch con-
nector terminals as follows:
A. With the joystick in the neutral position, continuity
should only exist between the common and NC ter-
minals.
B. With the joystick in the lower position, continuity
should only exist between the common and NO ter-
minals.
Reelmaster 3550--D
7. Replace raise and lower switch if testing identifies
that switch is faulty.
8. After switch testing is completed, connect the har-
ness connectors to the raise and lower switches on joy-
stick assembly. Install control panel cover.
1
2
1. Joystick assembly
2. Raise switch
1
2
3
1. Common terminal
2. NO terminal
Page 5 - - 19
3
FRONT
Figure 19
3. Lower switch
Figure 20
3. NC terminal
4. Switch lever
Electrical System
4