Charging The Hydraulic System - Toro 08703 Operator's Manual

Charging the Hydraulic
System
Whenever a hydraulic component is repaired or replaced,
the hydraulic oil filter should be changed and the hydraulic
system charged.
Make sure that the hydraulic reservoir and filter are filled with
oil at all times when charging the hydraulic system.
1. Park the machine on a level surface and turn the engine
off.
2. Loosen the 2 screws securing the center shroud to the
machine and remove the shroud (Figure 41).
1. Center shroud
3. Raise the front wheel and one of the rear wheels off of
the floor and place support blocks under the frame.
WARNING
The front wheel and one rear wheel must
be raised off the ground or the machine will
move during the adjustment. Make sure the
machine is supported so it will not accidentally
fall injuring anyone under the machine.
4. Start the engine and set the throttle to allow the engine
to run at approximately 1800 RPM.
5. Actuate the lift valve lever until the lift cylinder rod
moves in and out several times. If the cylinder rod
does not move after 10-15 seconds or the pump emits
abnormal sounds, shut the engine off immediately
and determine the cause or problem. Inspect for the
following:
•
Loose filter or suction lines
•
Loose or faulty coupler on the pump
•
Blocked suction line
•
Faulty charge relief valve
•
Faulty charge pump
If the cylinder moves in 10-15 seconds, proceed to
step 3.
Figure 41
6. Operate the traction pedal in forward and reverse. The
wheels that are off of the floor should rotate in the
proper direction.
•
If the wheels rotate in the wrong direction, stop
the engine, remove the lines from the rear of the
pump and reverse the locations.
•
If the wheels rotate in the proper direction, stop the
engine and adjust the spring adjusting pin locknut
(Figure 42). Adjust the traction neutral position;
refer to Adjusting the Traction Drive for Neutral.
1. Spring adjusting pin
2. Bearing
7. Check the adjustment of the traction interlock switch;
refer to Adjusting the Traction Interlock Switch.
8. Install the center shroud.
34
Figure 42
3. Cam