Hopper Down Proximity Switch - Toro Pro Sweep 5200 Service Manual

Hopper Down Proximity Switch

The Pro Sweep 5200 uses a proximity switch as an inter-
lock device to prevent brush operation (rotation) when
the dump hopper is raised. This switch is normally open
and closes when the pitch frame moves the switch cam
near the target end of the switch (dump hopper low-
ered). The switch is mounted on the main sweeper
frame (Fig. 10).
Testing
1. Position sweeper on a level surface with dump hop-
per lowered. If sweeper is attached to towing vehicle,
engage vehicle parking brake, stop engine and remove
key from the ignition switch.
2. Locate hopper down switch. Disconnect switch from
machine wiring harness.
3. Check the continuity of the switch by connecting a
multimeter (ohms setting) across the switch connector
terminals.
NOTE: Before checking switch continuity, clean target
end of switch to make sure that there is no metallic de-
bris on the switch that could prevent correct switch op-
eration.
4. With the switch cam positioned near the target end
of the switch (dump hopper lowered) (Fig. 11), there
should be continuity across the switch terminals.
5. When the switch cam is positioned away from the tar-
get end of the switch (dump hopper raised) (Fig. 11),
there should be no continuity across the switch termi-
nals.
IMPORTANT: Proper proximity switch operation re-
quires aluminum switch spacer that positions the
switch away from the sweeper frame. If switch is re-
moved from machine, make sure that switch spacer
is installed between switch and frame.
6. Replace proximity switch as needed. Reconnect
switch to machine wiring harness.
Electrical System
8
9
10
Switch
Target
End
11
RIGHT
FRONT
1. Mounting spacer
2. Spacer
3. Cap screw
4. Switch cam
5. Cam spacer
6. Flat washer
7. Cap screw
8. Flange nut (3 used)
2
1. Hopper down switch
2. Switch cam: dump hopper lowered
3. Switch cam: dump hopper raised
Page 4 – 10
7
6
5
4
12
13
14
15
Figure 10
9. Switch cam weight
10. Carriage screw (3 used)
11. Lock nut (2 used)
12. Flat washer (2 used)
13. Hopper down switch
14. Switch spacer
15. Cap screw (2 used)
3
1
Figure 11
Pro Sweep 5200
3
2
1
1