Hendrickson lift axle control valve diagram

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Hendrickson lift axle control valve diagram

OF DE. Effective date : Year of fee payment : 4. Year of fee payment : 8. Year of fee payment : A control system for a lift axle suspension wherein two or more axle suspensions are mounted on a vehicle frame and a liftable axle is automatically raised or lowered depending on the load on another of the axle or axles. An override to the automatic lift system is provided when the vehicle is fully loaded to lift a liftable axle selectively for a limited, relatively short period of time to assist in maneuvering the vehicle. The control system detects the load on one axle and automatically raises the second axle to the raised position when the load on the first axle is below a first predetermined value and automatically lowers the second axle to the lower position when the lower load on the first axle is above a predetermined value which is greater than the first predetermined value. A delay is provided in the operation of the control system to lower the second axle upon the detection of the load on the first axle to compensate for road bumps. An electrical sensor coupled to the load detector provides a signal to an electrical circuit in the controller to control the operation of the second axle. In one of its aspects, the invention relates to a lift axle control system having a means for automatically raising and lowering a lift axle depending on the load in the full time down axle s. Multi-axle suspensions, commonly found on trucks and trailers, typically have suspension systems which provide for selective raising and lowering of one axle with respect to the other. A control system for raising and lowering the liftable axle with respect to the "down" axle or axles is sold by the Truck Products Division of Lear Siegler, Inc. In this system, a manual toggle switch in the cab of the vehicle controls the operation of a solenoid valve which in turn controls the flow of air to air-lift air springs and to supporting air springs for the liftable axle.

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Hendrickson lift axle control valve diagram

Need Help? The axle is rated based on the lowest capacity component fitted to that axle. The installer should check that the tire and rim combination meets the load requirements. The rating information on the Hendrickson vendor provided hubs can be found at:. For KIC wheel ends standard fit : www. A non-steerable lift axle that is not raised when turning, especially in a tight corner, will scrub concrete and impose high lateral stress on the wheels and chassis components of your vehicle. Raising the fixed axle when cornering will help decrease tire wear, reduce maintenance costs, and ensure proper functionality of the auxiliary lift axle when in use.

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Upload from URL. Sign In OR. Important Safety Notice. The control system uses solid-state electronics and is far less costly than pneumatic systems which have been used in the past. Lift Axle Control Valve For setting instruction of the lifting axle control valve please check the pages of the document "Pneumatic brake equipment for trailer vehicles" Vehicle application India : Volvo. AUB2 en. Briefly, when the toggle switch is closed, current flows to the system time delay TD S , and directly to the solenoid valve 56 to raise the bogey axle 40 in the manner described above. Quick Release Valve. Ask A Question. Hydraulic Load Sensing Valve. File Name Rev. Scale and monitoring system for rubber recycling processes and other uses which may be used to optimize collection, freight and downstream recycling processes.

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A control system for a lift axle according to claim 5 wherein said pressure detection means is a pressure switch which has a first electrical output when the pressure in said air spring corresponds to a load on said axle below said first predetermined value and has a second electrical output when the pressure in said air spring corresponds to a load on said axle above said second predetermined value. Manual Transmission Clutch Master Cylinder. The SSI is equipped with an electric-actuated toggle switch and features an integrated relay with a connector. Thus, when the axle 40 is up and axle 26 experiences a momentary load as, for example, would occur from a road bump, a momentary pressure rise will open the pressure switch and send a signal to the integrated circuit IC1. Restore password. Retarder Solenoid Valve. The control system is a pneumatic system which incorporates adjustable throttles so that short-term pressure variations will not cause raising or lowering of the liftable axle. Diagnostic Software - Bus Package. Doc Type. The invention will now be described with reference to the accompanying drawings in which:. CAC en. Lift Axle Control Valve For setting instruction of the lifting axle control valve please check the pages of the document "Pneumatic brake equipment for trailer vehicles" Vehicle application India : Volvo. Previous Page. CAA en. This condition will continue for the extent of the time-delay TD S , for example, one minute.