Lower Reels Time Delay - Toro Greensmaster 3150 Service Manual

Lower Reels Time Delay

The lower reels time delay is a solid state timer used to
energize the lower relay (K5) long enough to make sure
that the cutting units will lower fully when the joystick is
moved. When the lower relay is energized, hydraulic
manifold solenoid valves S2 and S4 are energized caus-
ing the cutting unit lift cylinders to retract and lower the
cutting units.
Upon the application of electrical power to the time
delay, the load is energized and the time delay is started.
After six (6) seconds the load is de--energized.
Testing
1. Park machine on a level surface. Make sure the en-
gine and ignition switch are OFF.
2. Raise seat to allow access to lower reels time delay
(Fig. 19).
3. Connect voltmeter across test load and test load to
timer. Connect 12VDC source to timer and load. Make
sure to observe polarity. After six (6) seconds, there
should be no voltage across the load.
4. After testing is complete, disconnect timer from
12VDC source and test load.
5. Lower operator seat.
Electrical System
TIMING
RESISTOR
Page 5 - - 18
DELAY
Figure 19
+
--
INPUT VOLTAGE
LOAD
3 2 1
Figure 20
Greensmaster 3150
TIME