Cutting Deck Position Switch
The cutting deck position switches on the Groundsmas-
ter 4000--D are located on the traction unit frame (Fig.
51
and 52). The position switch is anormally open, pow-
3
1
ered proximity switch that incorporates an internal reed
switchandrelay(seeschematicinFigure53).Thesens-
ing plate is located on the cutting deck lift arm. The
switches for front and side decks are the same although
their operation depends on deck location.
When a side cutting deck is raised, the sensing plate is
moved away from the position switch and the switch
opens.Theopenswitchpreventscurrentflowtotheside
deck solenoid and keeps the deck from operating.
When the front cutting deck is raised, the sensing plate
is moved near the position switch and the switch closes.
Theclosedswitchpreventscurrentflowtothefrontdeck
solenoid and keeps the deck from operating.
2
Figure 51
1.
2.
Position switch (front)
3.
Front lift cylinder
Sensing plate
Testing
1.
decks, stop engine, apply parking brake and remove
key from the ignition switch.
Park machine on a level surface, lower cutting
2.
switch connector from machine wiring harness.
Locate switch that requires testing and disconnect
3.
apply 12 VDC to switch connector terminal for red wire.
Ground switch connector terminal for black wire and
4.
minal for blue wire has 12 VDC and terminal for white
wire has 0 VDC.
Using a multimeter, verify that switch connector ter-
5.
Place metal object near sensing area of switch (op-
2
posite end from wires). Ground switch connector termi-
nal for black wire and apply 12 VDC to switch connector
terminal for red wire.
1
Figure 52
1.
Position switch (side)
2.
Sensing plate
6.
Using a multimeter, verify that switch connector ter-
minalforbluewirehas0VDCandterminalforwhitewire
has 12 VDC.
BLUE
7.
Replace switch as needed.
WHITE
BLACK
RED
Adjustment
NOTE: Deck
Proximity
Switch
Adjustment
Tool
(TOR4095) can be used for switch adjustment.
The sensing plate on side deck lift arms should be
SWITCH
CONNECTOR
1.
Figure 53
0.060”
to 0.120” (1.5 to 3.0 mm) from target surface of
position switch.
2.
On front deck lift arm, slide sensing plate as far from
the lift arm as possible.
Electrical System
Page 5 -- 32
Groundsmaster 4000--D
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
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| Language | English |
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