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Rev. E
Groundsmaster 4100--D
Hydraulic System
Page 4 -- 11
Lower Cutting Deck
A three section gear pump is coupled to the piston (trac-
tion) pump. The gear pump section farthest from the pis-
ton pump supplies hydraulic flow to both the lift/lower
control valve and the steering control valve. Hydraulic
flow from this pump section is delivered to the circuits
through a proportional flow divider. This pump section
takes its suction from the hydraulic reservoir.
When the cutting deck is in a stationary position, flow
from the gear pump is by--passed through the lift/lower
control valve, counterbalance manifold, oil filter, and
traction charge circuit.
To lower the cutting deck, the center lift lever on the lift/
lower control valve is pushed to allow valve shift in the
lift/lower control. This valve change allows a passage for
oil flow from the rod end of the deck lift cylinders. The
weight of the cutting deck causes the lift cylinder shafts
to extend, and lowers the deck. Oil from the rod end of
the cylinders is allowed to return to the traction charge
circuit. When the lift lever is released, the lift cylinders,
and cutting deck, are held in position.
The drop speed of the cutting deck is regulated by an ad-
justable flow control valve that is located in the hydraulic
lines between the lift/lower control valve and the deck lift
cylinders.
To lower a wing deck, the appropriate lift lever (right side
or left side) on the lift/lower control valve is pushed to al-
low valve shift in the lift/lower control valve. This valve
change causes a valve shift in the counterbalance man-
ifold and oil flow to the piston end of the lift cylinder. High-
er hydraulic pressure against the piston end of the
cylinder causes the shaft to extend, and lowers the wing
deck. Oil from the rod end of the cylinder returns to the
traction charge circuit. When the lift lever is released, the
lift cylinder, and wing deck, is held in position.
An adjustable counterbalance valve maintains back
pressure on the deck lift cylinders. A relief valve located
in the lift/lower control valve limits circuit pressure. Ex-
cess circuit flow is routed to the oil filter and then to the
traction charge circuit.
Hydraulic System
Содержание 30411
Страница 1: ...Form No 03116SL Rev G Groundsmaster 4100 D Model 30411 Original Instructions EN...
Страница 4: ...NOTES _...
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Страница 14: ...Groundsmaster 4100 D Page 1 6 Safety This page is intentionally blank...
Страница 16: ...Groundsmaster 4100 D Page 2 2 Product Records and Maintenance Equivalents and Conversions...
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Страница 27: ...Groundsmaster 4100 D Page 3 5 Kubota Diesel Engine Rev A This page is intentionally blank Kubota Diesel Engine...
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Страница 197: ...Groundsmaster 4100 D Page 6 7 Axles Planetaries and Brakes This page is intentionally blank Axles Planetaries and Brakes...
Страница 226: ...Groundsmaster 4100 D Page 7 8 Chassis This page is intentionally blank...
Страница 231: ...Groundsmaster 4100 D Cutting Deck Page 8 5 This page is intentionally blank Cutting Deck...
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Страница 248: ...Groundsmaster 4100 D Electrical Diagrams Page 9 2 This page is intentionally blank...
Страница 250: ...Page 9 4 Glow Plug Circuit Power Current Control Current Indication Current Logic Direction Groundsmaster 4100 D...
Страница 251: ...Page 9 5 Crank Circuit Power Current Control Current Indication Current Logic Direction Groundsmaster 4100 D...
Страница 252: ...Page 9 6 Run Transport Circuit Power Current Control Current Indication Current Logic Direction Groundsmaster 4100 D...
Страница 255: ...Page 9 9 Groundsmaster 4100 D Main Wire Harness...
Страница 257: ...Page 9 11 Groundsmaster 4100 D Engine Wire Harness D4 D2 D6...
Страница 259: ...Page 9 13 Groundsmaster 4100 D Front Wire Harness D7 D8 D5...
Страница 261: ...Page 9 15 Groundsmaster 4100 D Cutting Deck Wire Harnesses...
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