Cutting Deck Lift/Lower Switch - Toro Groundsmaster 4500-D Service Manual

Cutting Deck Lift/Lower Switch

The lift/lower switch is a normally open proximity switch
that is closed when a lift lever is in the neutral position.
When a lift lever is moved to raise, the lift/lower switch
opens. Each lift lever is equipped with a cutting deck lift/
lower switch.
When the machine operator engages the cutting decks
(PTO switch ON and decks lowered), the cutting deck
lift/lower switch and circuit board diode D1--C provide a
latching circuit to keep the PTO relay energized (Fig.
18). Operating the machine on uneven ground could
cause a cutting deck to raise enough to open a deck
position switch. The cutting deck lift/lower switch is de-
signed to keep the PTO relay energized in this situation
to maintain cutting deck operation.
Switch Testing and Adjustment
1. Park machine on a level surface, lower cutting units,
stop engine, engage parking brake, and remove key
from the ignition switch.
2. Remove console cover from machine.
3. Locate cutting deck lift/lower switch that requires
testing. Disconnect switch connector from machine wir-
ing harness.
4. Check the continuity of the switch by connecting a
multimeter (ohms setting) across the switch connector
terminals.
5. With the lift lever in the neutral position there should
be continuity across the switch terminals.
6. Pull back on the lift lever enough to take up all free
play in the lever. The switch should open before the lever
applies any pressure to the spool in the lift/lower control
valve.
7. Switch position can be adjusted for correct operation
by loosening the switch plate screw and moving switch
plate. After any adjustment, recheck switch operation.
FROM PTO SWITCH
(PTO SWITCH ON)
FRONT DECK
POSITION
(DECK LOWERED)
Groundsmaster 4500--D/4700--D
LIFT/LOWER
SWITCH
(IN CENTER POSITION)
FRONT DECK
POSITION
(DECK LOWERED)
Figure 18
Page 5 - - 13
2
Figure 16
1. Lift/lower switch location (GM4700 shown)
2. Switch connector
3. Switch plate screw
GM 4700- -D SHOWN
5
4
3
2
Figure 17
1. Lever support
2. Switch plate
3. Switch plate screw
TO GROUND
Electrical System (Rev. A)
1
3
1
4. Lift/lower switch
5. Thread forming screw
FRONT PTO
(DECKS 2, 3, 5)
FRONT PTO
(DECKS 1,4)