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Clark GEX20 - Description; Lift and Tilt Pump Switches; Seat Switch; Switch Adjustment

Clark GEX20
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Group 13, Wiring, Switches, and Instruments
SM 765, Sep ’06 Switches and Sensors • 13-4-5
Seat Switch
The GEX trucks are equipped with a seat switch that sig-
nals the control to cut the power when the operator
leaves the seat.
When the seat switch is open, a -01 fault code will be dis-
played on the dash display.
There is a 1.5 second time delay built into the control to
allow for momentary opening of the seat switch. If the
truck is operated over rough surfaces and the operator is
bounced, causing a momentary opening of the seat switch,
the truck will not shut down.
Lift and Tilt Pump Switches
Description
The pump control switches are mounted on brackets at the
valve spools and they are normally open. Movement of th
valve spools from the neutral position trips the switches
and closes their contacts. Current flow through the con-
tacts signals the pump controller to operate the pump
motor at the set speed for the selected function.
The lift lever activates a lift enable switch and also acti-
vates a Lift Pot. This potentiometer signals the pump con-
troller to run at an increasing speed proportional to the
rearward movement of the lever.
Switch Adjustment
1. Turn key switch to the OFF position.
2. Loosen switch mounting screws.
3. Adjust switch to activate after spool moves from neu-
tral.
4. Tighten mounting screws.
5. Check operation of switch before truck is returned to
service.
Seat Switch
Seat Flexolater
Azdel Seat pan
Wire harness
SUSPENSION SEAT
STATIC SEAT

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