Illustration 1 | g00450644 |
Drive motor flushing valve (1) Orifice. (2) Relief valve. (3) Shuttle valve spool. (A) Closed loop circuit line. (B) Closed loop circuit line. (C) Flush port. |
Illustration 2 | g00731035 |
Axle Motor (2) Relief valve. (3) Shuttle valve spool. |
The drive motor flushing valve is located in the closed loop circuit of the axle motor. Lines (A) and (B) represent the two loops of the closed loop circuit. The operation of the propel pump in either FORWARD or REVERSE regulates the direction of flow in the loop. The direction of flow in the loop determines whether a line is high pressure or low pressure.
Pilot pressure on the high pressure side shifts shuttle valve (3). The low pressure side opens to relief valve (2). The relief valve is set at