Cutting Deck Position Switch - Toro Groundsmaster 4500-D Service Manual

Cutting Deck Position Switch

The cutting deck position switch is a normally open prox-
imity switch that is located on the traction unit frame (Fig.
14). The sensing plate is located on the cutting deck lift
arm. The GM 4500--D uses two cutting deck position
switches: for decks 4 and 5. There are four deck position
switches on the GM 4700--D: for decks 4, 5, 6, and 7.
When the cutting deck is raised, the sensing plate is
moved away from the position switch and the switch
opens. This open switch prevents current flow to the
PTO relay and the cutting deck hydraulic solenoid valve,
keeping the cutting decks from operating.
Switch Testing
1. Park machine on a level surface, lower cutting units,
stop engine, engage parking brake, and remove key
from the ignition switch.
2. Disconnect deck position switch that requires testing
from machine wiring harness.
3. Check the continuity of the switch by connecting a
multimeter (ohms setting) across the switch connector
terminals.
4. With the cutting unit in the lowered position, there
should be continuity across the switch terminals.
5. Raise the cutting unit. There should be no continuity
across the switch terminals.
6. Replace switch as needed. Reconnect switch.
Switch Adjustment
1. Adjust switch to have 1/16 in (1.6 mm) clearance be-
tween switch and sensing plate on the lift arm.
Electrical System (Rev. A)
3
1. Position switch
2. Switch connector
#4 Deck
#6 Deck
(GM4700)
CUTTING DECK LOCATIONS
Page 5 - - 12
1
Figure 14
3. Lift arm (#5 shown)
#1 Deck #5 Deck
#2 #3
Deck Deck
Figure 15
Groundsmaster 4500--D/4700--D
2
#7 Deck
(GM4700)