Turf Guardian Tm Leak Detector Oil Level Sensor (If Equipped) - Toro Greensmaster TriFlex 3320/3420 Service Manual

TM
Turf Guardian Leak Detector Oil Level Sensor (If Equipped)
NOTE: The Turf Guardian
optional on Greensmaster TriFlex Hybrid machines.
The leak detector oil level sensor closely monitors the
hydraulic fluid level in the main hydraulic reservoir. The
sensor is open when the sensor float is in the raised
position and closed when the float is in the lowered posi-
TM
tion. See Turf Guardian
eration in this chapter for information regarding Leak
Detector System operation.
Oil Level Sensor Testing
NOTE: On Greensmaster 3320 machines, the leak de-
tector oil level sensor is an input for the TEC controller.
Before disconnecting the oil level sensor for testing on
a Greensmaster 3320, the sensor and its circuit wiring
should be tested as a TEC electrical input using Hand
Held Diagnostic Display (see Hand Held Diagnostic Dis-
play in the Troubleshooting section of this chapter) or
InfoCenter Display (see InfoCenter Display in this
chapter). If input testing verifies that the oil level sensor
and circuit wiring are functioning correctly, no further
sensor testing is necessary. If, however, input testing
determines that the oil level sensor and circuit wiring are
not functioning correctly, proceed with the following
sensor testing procedure.
1. If the oil level sensor is connected to the main wire
harness, remove hydraulic tank cap from filler neck of
hydraulic reservoir. Start the engine. Insert a clean rod
or screw driver into filler neck and gently push down on
sensor float (Fig. 92). Alarm should sound and console
leak detector indicator light should illuminate after a one
(1) second time delay.
2. If the oil level sensor is removed or disconnected
from the main wire harness, connect a continuity tester
across the sensor wire terminals. There should be conti-
nuity (low resistance) across the sensor connector ter-
minals when the float is pushed down. There should not
be continuity (infinite resistance) across the sensor con-
nector 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. 93). 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.
Greensmaster 3320/3420
TM
Leak Detector System is
Leak Detector System Op-
Page 6 - - 71
1
3
2
110 to 140 in- -lb
(12.5 to 15.8 N- -m)
Figure 91
1. Hydraulic reservoir
2. Oil level sensor
CLEAN ROD OR
SCREWDRIVER
Figure 92
2
Figure 93
1. Oil level sensor
3. O- -ring
FLOAT SWITCH
(lowered/closed)
ALARM
(on)
1
2. Sensor arrow
Electrical System