Toro Reelmaster 5100-D Service Manual page 164

TurfDefender Leak Detector
The TurfDefender is an electronic hydraulic fluid leak
detection device that fits inside the hydraulic tank of your
machine. It is a pressure based system which requires a
sealed hydraulic tank to function properly. Very small
changes to the oil level in the sealed tank result in a large
movement of the leak detector's internal float. The Turf-
Defender's internal microprocessor analyzes the float
movement and determines if there is a leak in the sys-
tem.
Turn ignition key to "ON" position start the sys-
tem. The system will reset itself whenever the igni-
tion key is moved to "OFF" position. Wait 5 seconds,
then move key to "ON" position to restart the system.
When machine is started, the
one short beep to indicate that everything is operat-
ing properly. If the alarm makes no noise at all, it
should be checked by a mechanic.
If the alarm gives 4 short beeps it means a sys-
tem problem has been detected and it should be
checked by a mechanic. The 4 beep pattern will con-
tinue for approximately 1–1/2 minutes, then stop, un-
less the ignition key is moved to "OFF" position.
Note: The low or high oil level 4 beep signal may oc-
cur if machine is started on a slope. Move machine to
a level surface, move ignition key to "OFF" position,
wait 5 seconds, then move key to "ON" position to re-
start the system.
If the alarm gives a loud continuous beep while
mowing and shuts off the cutting units, it means that
a leak has been detected. On the traction unit, the
red light on the steering console will also blink indi-
cating the ECU has shut off the cutting units.
Checking Leak Detector Operation
The operation of the TurfDefender
checked if any of the following conditions occur:
a. No beeps are heard when ignition switch is
turned "ON".
b. Any time the machine gives a series of 4 short
beeps.
c. False alarms are observed.
1. Park machine on a level surface, stop the engine
and engage the parking brake.
2. Open control panel cover. Locate leak detector
harness loopback connector with hydraulic
symbol tag. Carefully unplug loopback
connector from harness connector.
3. Connect the Diagnostic ACE display connector to
the correct harness loopback connector. Install TurfDe-
fender overlay decal (supplied with leak detector kit)
onto Diagnostic ACE (Fig. 8b).
Troubleshooting
4. Turn the key switch to the ON position, but do not
start machine.
Note: Red text on the overlay decal refers to inputs and
green text refers to outputs.
5. The red "Inputs displayed" LED (Light Emitting
Diode), on lower right column of the Diagnostic ACE,
should be illuminated. If green "Outputs displayed" LED
is illuminated, press and release the toggle button, on
Diagnostic ACE, to change LED to "Inputs displayed".
Do not hold button down (Fig. 8b).
If TurfDefender is functioning normally:
1. When the "Inputs displayed" LED is lit, the actual
Float position (1 or 2 LED's on left row) and "Oil level
alarm will give
OK" LED – should be displayed (Fig. 8c).
2. Press toggle button until green "Outputs displayed"
LED is lit. "Valve ON", "data line" and "self diagnos-
tic"LED's should be lit steadily. "Alarm ON" LED may be
displayed temporarily (about 5 seconds) (Fig. 8d).
Note: If "data line" or "self diagnostic" LED's are blink-
ing, there is a problem in the system.
If No beeps are heard:
1. Check alarm wires to make sure they are not dis-
connected, broken or "+" and "–" reversed.
2. Toggle "outputs displayed" on Diagnostic ACE dis-
play (Fig. 8d).
place TurfDefender alarm or wires.
place TurfDefender alarm or wires.
If 4 beeps are heard:
The most common cause for a 4 beep signal is from an
improper oil level reading. Make sure machine is on a
level surface when checking oil level. Since oil level will
should be
vary with temperature, it is best to check when cool.
1. When toggling "input", a LED should display
(Fig. 8c) any of the following problems diagnosed by the
TurfDefender:
and fill to proper level.
face and remove excess oil until proper level is at -
tained.
debris from oil cooler.
check for leak in tank.
Note: Only large air leaks can be detected by hand
held Diagnostic ACE. A leakdown test is required to
identify small air leaks. Consult your Authorized Toro
Distributor for assistance.
Page 5 – 8.2 Rev. B
Alarm open circuit (LED blinking): Check / re-
Alarm short circuit (LED blinking): Check / re-
Oil level low: Position machine on a level surface
Oil level high: Position machine on a level sur -
Oil too hot: Allow machine to cool and clean any
Air leak in system: Assure tank cap is tight or
Reelmaster 5100–D