Adjusting The Weight Transfer Of The Mower Deck - Toro Groundsmaster 3280-D Operator's Manual

11
Adjusting the Weight
Transfer of the Mower Deck
No Parts Required
Procedure
You can change the hydraulic pressure used to
transfer the weight of the mower deck to the traction
unit by adjusting weight-transfer valve of the lift
manifold. For best cutting performance, adjust the
weight-transfer valve so that any bouncing motion of
the mower deck is minimal over uneven turf, but also
adjust the weight-transfer valve so that the mower
deck does not ride heavily over flat terrain.
•
To improve the contour-tracking performance
of the cutting deck as you operate the machine
over uneven turf, decrease the weight-transfer
(hydraulic) pressure at the lift manifold.
Note:
If the casters of the mower deck float above
the ground, the hydraulic pressure of the weight
transfer valve is set at too high.
•
When you are cutting flat turf, when the cutting
deck is scalping the grass, or if the quality of
cut is uneven from side to side, increase the
weight-transfer pressure at the lift manifold.
Note:
Increasing weight-transfer pressure also
transfers the weight from the casters of the cutting
deck to the wheels of the traction unit, thereby
improving the traction of the traction unit.
Adjust the weight-transfer pressure as follows:
1. Park the machine on a level surface, engage
the parking brake, lower the cutting deck, shut
off the engine, and remove the key from the key
switch.
2. Locate the lift manifold from under the machine,
inboard the right frame channel, behind the front
axle (Figure 12).
3. Connect a pressure gauge to the test port at the
rear of the lift manifold
1. Lift manifold
2. Test port
4. At the front of the lift manifold, remove the cap
from the weight-transfer spool
5. Loosen the jam nut at the bottom of the
weight-transfer spool
6. Start the engine and set the throttle to
7. Use a hex-socket wrench to adjust the lift valve
of the weight-transfer spool until the gauge
indicates the desired pressure; refer to the chart
that follows for the recommended pressure
setting for the cutting deck.
•
Rotate the adjusting screw clockwise to
increase the pressure.
•
Rotate the adjusting screw counterclockwise
to decrease the pressure.
18
Figure 12
(Figure 13).
Figure 13
3. Remove the cap from the
weight-transfer spool
(Figure 13).
(Figure 13).
HIGH IDLE
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