Checking The Interlock Switches; Pushing Or Towing The Machine - Toro 30868 Groundsmaster 4700-D Operator's Manual
Traction unit
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Also See for 30868 Groundsmaster 4700-D:
- Service manual (298 pages) ,
- Installation instructions manual (20 pages) ,
- Operator's manual (92 pages)
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2. Move the throttle control to the low idle position.
3. Turn the ignition key to the Run position. The
glow indicator will light.
4. When the glow indicator dims, turn the ignition key
to the Start position. Release the key immediately
when the engine starts and allow it to return to
the Run position. Move the throttle control to the
desired position.
Important: Do not run the starter motor
more than 15 seconds at a time or premature
starter failure may result. If the engine fails to
start after 15 seconds, turn the key to the Off
position, recheck the controls and procedures,
wait 15 additional seconds, and repeat the
starting procedure.
When the temperature is less than 20°F (-7°C), the
starter motor can be run for 30 seconds on then 60
seconds off for 2 attempts.
5. When the engine is started for the first time, or
after an overhaul of the engine, transmission, or
axle, operate the machine in forward and reverse
for one or two minutes. Also operate the lift lever
and PTO lever to ensure proper operation of all
parts. Turn the steering wheel to the left and right
to check steering response. Then shut the engine
off and check for oil leaks, loose parts, and any
other noticeable difficulties.
Shut the engine off and wait for all moving
parts to stop before checking for oil leaks,
loose parts, and other malfunctions.
Stopping the Engine
Important: Allow engine to idle for 5 minutes
before shutting it off after a full load operation.
This allows the turbo charger to cool down before
shutting the engine off. Failure to do so may lead
to turbo-charger trouble.
Note: Lower cutting units to the ground whenever
machine is parked. This relieves the hydraulic load
from the system, prevents wear on system parts and
also prevents accidental lowering of the cutting units.
1. Move the throttle control backward to the Slow
position.
2. Move the PTO lever to the Off position.
3. Set the parking brake.
4. Rotate the ignition key to Off.
5. Remove the key from the switch to prevent
accidental starting.
Checking the Interlock
Switches
If safety interlock switches are disconnected
or damaged the machine could operate
unexpectedly causing personal injury.
•
Do not tamper with the interlock switches.
•
Check the operation of the interlock switches
daily and replace any damaged switches
before operating the machine.
•
Replace switches every two years or 1500
hours, whichever occurs first, regardless of
whether they are operating properly or not.
The machine has interlock switches in the electrical
system. These switches are designed to stop the engine
when operator gets off of the seat when the traction
pedal is depressed. However, the operator may get off
of the seat while the engine is running and the traction
pedal is in neutral. Although the engine will continue
to run if the PTO lever is disengaged and the traction
pedal is released, it is strongly recommended that the
engine be stopped before rising from the seat.
To check the operation of the interlock switches,
perform the following procedure:
1. Drive the machine slowly to a large, relatively open
area. Lower the cutting unit, stop the engine, and
apply the parking brake.
2. Sit on the seat and depress the traction pedal. Try
to start the engine. The engine should not crank.
If the engine cranks, there is a malfunction in the
interlock system that should be corrected before
beginning operation.
3. Sit on the seat and start the engine. Rise from the
seat and move the PTO lever to On. The PTO
should not engage. If the PTO engages, there is a
malfunction in the interlock system that should be
corrected before beginning operation.
4. Sit on the seat, engage the parking brake and start
the engine. Move the traction pedal out of the
neutral position. The engine should kill. If the
engine does not kill, there is a malfunction in the
interlock system that should be corrected before
beginning operation.
Pushing or Towing the
Machine
In an emergency, the machine can be moved forward by
actuating the bypass valve in the variable displacement
22
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