Cutting Deck Position Switch
Thecuttingdeckpositionswitchisanormallyopenprox-
imityswitchthatislocatedonthetractionunitframe(Fig.
3
30).
The sensing plate is located on the cutting deck lift
arm. The Groundsmaster 4500--D uses two (2) cutting
deckpositionswitches: fordecks4and5.There arefour
1
(4)
4700--D:
deck position switches on the Groundsmaster
for decks 4, 5, 6 and 7.
2
When a cutting deck is lowered, the sensing plate is lo-
cated near the position switch and the switch closes.
ThisclosedswitchprovidesaninputfortheTECcontrol-
ler to allow the lowered cutting decks to operate.
Switch Testing
Figure 30
3.
1.
decks, stop engine and engage parking brake.
Park machine on a level surface, lower cutting
1.
2.
Position switch
Switch connector
Lift arm (#5 shown)
2.
Before disconnecting the cutting deck position
switch for testing, the switch and its circuit wiring should
be tested as a TEC input with the Diagnostic Display
(see Diagnostic Display in the Troubleshooting section
ofthischapter).IftheDiagnostic Displayverifies thatthe
positionswitchandcircuitwiringarefunctioningcorrect-
ly,no further switch testing is necessary.If,however,the
Display determines that the position switch and circuit
wiring are not functioning correctly, proceed with test.
#4
Deck
#1 Deck
#5 Deck
3.
ignition switch.
Make sure ignition switch is OFF. Remove key from
#2
Deck
#3
Deck
#
6 Deck
#7 Deck
(GM4700)
(GM4700)
4.
Disconnectdeckpositionswitchthatrequires testing
from machine wire harness.
5.
multimeter (ohms setting) across the switch connector
terminals.
Check the continuity of the switch by connecting a
CUTTING DECK LOCATIONS
Figure 31
6.
With the cutting deck in the lowered position, there
should be continuity across the switch terminals.
7.
Raisethecuttingdeck.Thereshouldbenocontinuity
across the switch terminals.
8.
Replace position switch if testing determines that it
is faulty.
9.
After testing is complete, connect wire harness elec-
trical connector to the position switch.
Switch Adjustment
1.
tween switch and sensing plate on the lift arm.
Adjust switch to have 1/16 in (1.6 mm) clearance be-
Electrical System
Page 5 -- 24
Groundsmaster 4500--D/4700--D
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