Leak Detector Float Sensor - Toro Greensmaster 3150 Service Manual

Leak Detector Float Sensor

The leak detector float sensor closely monitors the hy-
draulic fluid level in the main hydraulic tank. The sensor
contacts are open when the float is in the raised position
and oil level in the hydraulic tank is correct. The sensor
closes when the float is in the lowered position caused
by a low oil level and potential oil leak.
NOTE: For information on leak detector operation refer
to Turf Guardiant Leak Detector System Operation in
this chapter.
Testing
1. If the float sensor is connected to the main harness,
remove hydraulic tank cap and screen from filler neck of
hydraulic tank. Turn ignition switch to the RUN position
(do not start the engine). Insert a clean rod or screw driv-
er into filler neck and gently push down on sensor float
(Fig. 33). Alarm should sound after a one (1) second
time delay.
2. If the float sensor is removed or disconnected from
the main harness, connect a continuity tester across the
float sensor wire terminals. There should be continuity
across the terminals only when the float is pushed down.
There should be no continuity across the terminals
when the float is in the raised position.
3. If oil level sensor was removed from reservoir, install
oil level sensor into reservoir making sure that arrow on
sensor is pointing down (Fig. 34). Torque sensor nut
from 110 to 140 in- -lb (12.5 to 15.8 N- -m).
4. After testing, make sure that hydraulic oil level in res-
ervoir is correct.
Electrical System
1
2
110 to 140 in- -lb
(12.5 to 15.8 N- -m)
1. Main hydraulic tank
2. Float sensor
CLEAN ROD OR
SCREWDRIVER
1. Oil level sensor
Page 5 - - 26
3
Figure 32
3. O- -ring
FLOAT SENSOR
(lowered/closed)
Figure 33
2
1
Figure 34
2. Sensor arrow
Greensmaster 3150
ALARM
(on)