Toro Groundsmaster 5900 Series Service Manual page 121

Reverse Direction
Groundsmaster ® 5900 & 5910
16227SL Rev B
The traction circuit operates essentially the same in reverse high range traction
speed as it does in the forward direction. However, the flow through the circuit is
reversed. Oil flow from piston pump port B is directed to traction manifold port
P2. Pump flow is then routed in parallel to both halves of the front wheel motors
through port R of both motors. Flow exits the motor sections through motor ports
A1 and A2. Flow from motor port A1 returns through the traction manifold, out
the P1 port and then is routed back to piston pump port A. Return flow from the
front wheel motor A2 port is returned under pressure back to the incoming pump
flow (right front through shifted PD5, left front through shifted PD4).
Operation of the traction manifold shuttle valve (SH) is the same in reverse low
speed as it is in the forward direction.
Page 5–21 Hydraulic System: Hydraulic Flow Diagrams