Checking The Leak Detector (Fig. 22-25) - Toro 04356 Operator's Manual

Checking the Leak Detector
(Fig. 23–26)
The leak detector system is designed to assist in early
detection of hydraulic oil system leaks. If the oil level in
the main hydraulic reservoir, is lowered by 4 to 6 ounces,
the float switch in the tank will close. After a one second
delay, the alarm will sound, alerting the operator.
Expansion of oil, due to normal heating during machine
operation, will cause the oil to transfer into the auxiliary oil
reservoir. The oil is allowed to return to the main tank when
the ignition switch is turned off.
Filler Cap
Sight
Window
Sole-
noid Re-
turn
Valve
Open
Float
Switch Open
Raised
Hydraulic Oil
Tank
Figure 23
Before Start (oil cold)
Solenoid
Return
Valve
Closed
Float
Switch Open
Raised
Figure 24
Normal Operation (oil warm)
Filler
Neck
Overflow Tube
Fluid Lev-
el (cold)
Checking the System Operation
1. With ignition switch in the On position, move the leak
detector switch rearward and hold. After the one-second
No
time delay elapses the alarm should sound.
Sound
2. Release the leak detector switch.
Checking the Leak Detector System
Operation
1. Move the ignition switch to the On position. Do not
start the engine.
2. Remove the hydraulic tank cap and strainer from the
neck of the tank.
3. Insert a clean rod or screwdriver into the tank neck and
gently push down on the switch float (Fig. 26). The
alarm should sound after the one-second delay.
Fluid Lev-
el (warm)
No
Sound
22
Float Down
Switch Closed
Fluid Level Down 4 to 6 ounces
Figure 25
Leak Alert!
Clean Rod
or Screw-
driver
Press Down
on Switch
Float
Figure 26
Fluid
Level
(warm)
Warning
Buzzer
Warning
Buzzer