Toro Groundsmaster 3500 30807, Service Manual

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Groundsmaster 3500 Page 6 - 19 Electrical System
PTO Switch
The PTO switch is located on the control panel. Most
Groundsmaster 3500 machines use a pull type switch
(shown in Fig. 20) while early production diesel powered
units use a rocker switch (shown in Fig. 21). The switch
allows the decks to be engaged or disengaged. Along
with additional switches in the interlock system, the PTO
switch controls the solenoid valve on the hydraulic man-
ifold.
The switch terminals are marked as shown in Fig. 20
and 21. The circuitry of the switch is shown in the charts
in the right column. With the use of a multimeter (ohms
setting), the switch functions may be tested to determine
whether continuity exists between the various terminals
for each switch position. Verify continuity between
switch terminals.
1. COM B terminal
2. NO B terminal
3. NC B terminal
4. COM C terminal
5. NO C terminal
6. NC C terminal
Figure 20
2
3
1
6
4
5
BACK OF SWITCH
PULL SWITCH
PULL SWITCH
SWITCH
POSITION
NORMAL
CIRCUITS
OTHER
CIRCUITS
ENGAGE C COM + C NO B COM + B NO
DISENGAGE C COM + C NC B COM + B NC
Figure 21
BACK OF SWITCH
ROCKER SWITCH
ROCKER SWITCH
SWITCH
POSITION
NORMAL
CIRCUITS
OTHER
CIRCUITS
ENGAGE 2 + 3 5 + 6
DISENGAGE 1 + 2 4 + 5
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