Testing The Traction Circuit - Wheel Motor Efficiency - Toro Sand Pro 3040 Service Manual

Testing the Traction Circuit – Wheel Motor Efficiency
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Sand Pro ® 3040 and 5040
20251SL Rev A
Traction Circuit – Wheel Motor Efficiency Tests
Wheel motor efficiency is the second in a series of tests recommended to
determine traction circuit performance. Too much hydraulic fluid flow through a
single stationary wheel motor under load indicates an internal leak in the wheel
motor. A worn wheel motor is less efficient. Eventually, enough fluid by−pass will
cause the wheel motor to stall under heavy load conditions. Continued operation
can generate excessive heat, cause damage to seals and other components in
the hydraulic system, and affect overall machine performance.
There are moments during wheel motor operation (geroller position) when fluid
flow through the motor is less restricted. If a wheel motor is tested in this
Figure 33
Page 5–31 Hydraulic System: Testing the Hydraulic System