Toro Groundsmaster 3280-D Service Manual page 112

Raise Cutting Deck (or Implement) (continued)
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Hydraulic System: Hydraulic Flow Diagrams
When the cutting deck (or implement) is to be raised, the control valve spool is
positioned rearward and flow is directed out the B port of the control valve to the
cap (upper) end of the lift cylinders. Hydraulic pressure against the cylinder
pistons extends the lift cylinders. At the same time, the pistons push the hydraulic
fluid in the lower portion of the lift cylinders out and to the reservoir (front axle).
The extending lift cylinders cause the cutting deck (or implement) to raise.
When the control valve lever is released, spring action returns the lift control
spool to the center position, and fluid flow passes through the lift valve to the
reservoir (front axle). Lift cylinder movement is stopped.
Figure 51
Page 5–28 Groundsmaster ® 3280-D/3320
05138SL Rev B