Filtering The Closed-Loop Traction Circuit - Toro Groundsmaster 360 Service Manual

Filtering the Closed-Loop Traction Circuit

Hydraulic System: Service and Repairs
g036058
1. Port A
2. Port B
3. Port C
Filtering a closed-loop hydraulic system after a major component failure (e.g.,
transmission piston pump or wheel motor) is necessary to prevent unwanted
material from transmitting throughout the system. If a closed-loop hydraulic
system filtering tool is not used to ensure the system cleanliness, repeat failures,
as well as subsequent damage to other hydraulic components in the affected
system, will occur. To effectively remove the contamination from the closed-loop
traction circuit, use the Toro high flow hydraulic filter and hydraulic hose kits
(refer to Special Tools (page
1. Park the machine on a level surface, shut of the engine, and remove the key
from the key switch.
Before lifting the machine with a jack, review and follow
Instructions (page 1–7).
2. Lift and support the machine so that all the wheels are off the ground.
Note: If the wheel motor was replaced, install a high-flow filter to the inlet
of the new motor instead of to the transmission. This will prevent system
contamination from entering and damaging the new wheel motor.
3. Clean the area around the traction circuit hoses on the top of the transmission
(Figure 61). Determine which piston pump circuit is to be filtered.
4. Disconnect the hydraulic hose from the transmission pump inlet fitting for the
piston pump to be filtered
Piston Pump to be Filtered
Right side pump
Left side pump
5. Connect the Toro high flow hydraulic filter in series between the pump inlet
fitting and disconnected hose. Use the hydraulic hose kit (refer to
Tools (page 4–27)) to connect the filter to the machine. Ensure that the hose
connections are properly tightened.
Figure 61
4. Port D
5. Balancing hose
4–27)).
IMPORTANT
(Figure 61).
Page 4–72
Jacking
Pump Inlet
Port B
Port D
Special
Groundsmaster 360
16225SL Rev C