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Home >> Land Rover >> 2017 >> Discovery Sport SE >> Repair and Diagnosis >> Drivelines & Axles >> Driveshaft & Universal Joints >> Four-Wheel Drive Systems - Vehicles With: Active Driveline -- Discovery Sport/L550 >> Four-Wheel Drive Systems - Vehicles With: Active Driveline >> Description And Operation >> Four-Wheel Drive >> Description >> Control Solenoid And Spool Valve

Control Solenoid And Spool Valve

Fig 1: Control Solenoid Spool Valve Exploded View
G11719552Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
ITEM DESCRIPTION
1 Control solenoid
2 Spool
3 Spring
4 Spool sleeve
5 Sleeve spring

Four variable force control solenoids are secured in the valve block with screws. The solenoids are PWM (pulse width modulation) controlled by the AWDCM and provide measured operation of the spool valves to supply the required hydraulic pressure for RDU clutch and PTU synchronizer operation.

The spool valves comprise a spool sleeve and spool valve. The spool valve is operated by the control solenoid which moves the spool within the sleeve. Movement of the spool opens and closes ports on the sleeve supplying pressure to the applicable function.

A electrical contact element with an electrical connector is located on the top of the valve block. The electrical connector has a contact element which connects with each of the four solenoids in the valve body. The contact element is secured in the valve body with two screws and sealed with an O ring seal.

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