Toro Groundsmaster 3280-D Service Manual page 167

Filtering the Closed-Loop Traction Circuit (Machine Serial Number
above 316000000) (continued)
Groundsmaster ® 3280-D/3320
05138SL Rev B
Using other hydraulic fluids could damage the hydraulic system.
Use the hydraulic fluids that are specified in the Operator's Manual.
5. After you install the high-flow filter to the machine, check and fill the hydraulic
reservoir (front axle) with the correct quantity of new hydraulic fluid.
6. Start the engine and run it at low-idle speed. Check for hydraulic-fluid leaks
at the filter and hose connections. Correct any leaks before you proceed.
During this procedure, all the wheels will be off the ground and
rotating.
Ensure that the machine is well supported so it will not move and
accidentally fall to prevent injuring anyone around the machine.
While engaging the traction circuit, monitor the indicator on the
high flow hydraulic filter. If the indicator shows red, either reduce
the pressure on the traction pedal or reduce the engine speed to
decrease the hydraulic flow through the filter.
7. With the engine running at low-idle speed, slowly move the traction pedal to
the forward direction to allow flow through the traction circuit and high-flow
filter. Keep the traction circuit engaged in forward for 5 minutes while
gradually increasing both forward pressure on the traction pedal and engine
speed. Monitor the filter indicator to ensure that the green color is showing
during operation.
8. With the engine running at high-idle speed and traction pedal moved to
the forward direction, periodically apply brakes to increase pressure in the
traction circuit. While monitoring the filter indicator, continue this process for
5 more minutes.
If you are using a filter that is not the Toro high flow filter that is
bi-directional, do not press the traction pedal in the reverse direction.
If the flow is reversed when using a filter that is not bi-directional,
unwanted material from the filter will again enter the traction circuit.
9. With the engine running at high-idle speed, alternately move the traction
pedal from forward to reverse. While monitoring the filter indicator, continue
this process for 5 more minutes.
10. Shut off the engine and remove the key from the key switch.
IMPORTANT
CAUTION
IMPORTANT
IMPORTANT
Page 5–83 Hydraulic System: Service and Repairs