Swing-link-compensator hand-brake cable linkage layout.Īnother compensator mechanism uses a roller mounted to the swing link. The swing link compensates any uneven slack in the two transverse cables and applies equal braking force to the parking brake levers.įig. The tension in the primary cable rotates the T-lever due to which the two short perpendicular arms pull the two transverse cables connected to the rear-wheel parking brake levers. 28.64), when applied, transmits leverage to the primary cable, the rear end of which is connected to a T-shaped lever. Swing-link-compensator Hand-brake Cable Layout.Ī pull-twist handgrip (Fig. Sliding-equalizer hand-brake cable linkage layout. Consequently this action provides an equal tension to each rear brake lever though both halves of the secondary cable.įig.
The secondary cable slides relative to the equalizer around a specially formed semicircular groove, so that any difference in length or slackness between the two halves is equalized. During the application of the hand brake lever, the primary cable pulls the middle of the secondary cable. The cover is usually fixed to the car’s underbody structure at one end. The hand brake lever can be adjusted by a nut screwed on the threaded end of the primary cable.Īn outer cable cover supports and guides the secondary cable. The middle of the secondary cable is looped around the curved equalizer, and each end of this cable is connected to the brake lever of one side wheel (Fig. This arrangement transfers the hand lever movement to a sliding equalizer through a single primary cable. Sliding-equalizer Hand-brake Cable Layout. Various hand levers are interchangeable to suit the car’s configuration. The braking effort in both cases is transmitted from the hand brake lever to the rear wheels by tension, in contrast to a hydraulic foot brake circuit, that works in compression. The general trend is to use a cable for cars and vans, and rods only for heavy duty commercial vehicles. Parking brakes are generally provided only on the rear road wheels.Įither cable or rod linkage is used in a hand brake system to link the various components together. Since the hand-brake system may be in operation for very long time period, a linkage mechanism separate from that of the hydraulic foot-brake circuit is installed. While the foot-brake system retards or stops a moving vehicle, the hand brake system prevents the vehicle moving once it is parked.
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