Toro 04730, Installation Instructions Manual

Page: 7 / 8

5
Checking the Leak Detector
No Parts Required
Understanding the Leak Detector
System
The leak detector system is designed to assist in early
detection of hydraulic-fluid-system leaks. If the fluid
level in the main hydraulic reservoir is lowered by 118
to 177 ml (4 to 6 fl oz), the float switch in the tank
will close. After a 1 second delay, the alarm sounds,
alerting the operator (
Figure 15 ). Expansion of fluid,
due to normal heating during machine operation,
causes the fluid to transfer into the auxiliary fluid
reservoir. The fluid returns to the main tank when you
turn off the ignition switch.
g229108
Figure 13
Before Starting (fluid cold)
1. Filler plug 5. Warning buzzer—no
sound
2. Filler neck 6. Fluid level (cold)
3. Overflow tube 7. Solenoid-return valve
(open)
4. Leak-detector tank 8. Float switch
(raised—open)
g229109
Figure 14
Normal Operation (fluid warm)
1. Fluid level (warm) 3. Warning buzzer
2. Solenoid-return valve
(closed) 4. Float switch
(raised—open)
g229110
Figure 15
Leak Alert!
1. Float switch
(down—closed)
Fluid level down 118
to 177 ml (4 to 6 fl oz) 3. Fluid level (warm)
2. Warning buzzer
Checking the System Operation
1. With the ignition switch in the O
N
position, move
the leak detector switch rearward and hold. After
the 1-second delay elapses, the alarm should
sound.
2. Release the leak-detector switch.
7