Testing The Traction Circuit - Piston (Traction) Pump Flow And Relief Pressure - Toro Field Pro 6040 Service Manual

Testing the Traction Circuit – Piston (traction) Pump Flow and
Relief Pressure
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Traction Circuit – Piston (traction) Pump Flow and Relief Pressure (right side test shown)
Hydraulic System: Testing the Hydraulic System
The piston (traction) pump flow test is the third in a series of tests recommended
to determine the traction circuit performance. This test compares fluid flow at No
Load with fluid flow Under Load. A drop in flow under load of more than 12%
indicates an internal leak or malfunctioning relief valve in the traction pump.
The final traction circuit test is verifying the hydraulic pump forward direction
relief valve operation. A worn hydraulic pump or malfunctioning relief valve is
Figure 32
Page 5–30 Field Pro® 6040
22267SL Rev A