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Farmer 400
Fav 700
Fav 900
Power lift / Electrohydraulic control
Rear power lift control system function charts
C
Documents and Diagrams
Fav 900 chassis number 23/3001 and up
25.04.2001
8610
000007
C
b
6/9
Capitel
Docu-No.
Index
Date
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Page
Rear power lift control system function charts
Text-module
3rd operational status:
DA lift
Bullet-List
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Control valve 1.2 is used for DA functions.
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Block multiway valve, consisting of AV3 and AV4, is in "DA" position.
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In this DA position relevant solenoid switch S048 is closed; EPC ECU A005 is therefore disabled.
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When main piston is moved in lifting direction, load line / LS connection is activated.
●
If LS pump PR is not yet active, current load pressure = LS pressure (= standby pressure of LS
pump) is transmitted as maximum pressure to LS pump as a command via shuttle valves (1.2 valve,
EPC valve, 1.1 valve, WLS-2, WLS-1).
●
LS pump PR then goes automatically to pump flow rate and pressure control.
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Hydraulic oil for lifting is then delivered directly to lift side of power lift cylinders from electrohydraulic
control valve 1.2 output.
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Displaced oil returns to tank via multiway valve AV3 and AV4.