[Fig. 125] shows a new type of internal expanding brake, which is being used on many of the late models. The brake band in this case is supported at three points and has an adjustment at the rear main point of support. The cam has been done away with, and the band is expanded by a leverage toggle arrangement which operates through a much larger area, and is more dependable as there is no danger of its “sticking” or turning over, as was often the case with the cam.
[Fig. 126] shows another type of service brake which may be encountered on a few of the former models. This type of brake is usually located on the propeller shaft at the rear end of the transmission case. This type of brake operates in the same manner as the service brake at the end of the axle.
Fig. 125. Brake—Showing Toggle Arrangement
[Fig. 126] shows an equalizer which allows for any difference that may occur in making adjustments.
Fig. 126. Transmission Brake—Equalizer
[Fig. 127] shows the complete brake assembly, and the points of adjustment on late Buick cars.
Brake Adjustment.—All types of brakes are adjustable. The service brake usually has two adjusting points, one at the drum, which is made by turning the nut on the leverage pull pin, and another on the pull rods. A long neck clevis, or a long butted turn buckle will always be found on the pull rods, or on the rod leading to the equalizer. The adjustment is made by turning either to the right to shorten, or take up, and to the left to lengthen. The clevis is always threaded to the right, while the turn buckle has a right and left thread which carries each end of the rod into the butt when it is turned to the right. The lock nuts must always be turned up tight to the butts after the adjustment is made in order to hold it.
