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iutomatic slack adjuster introduced n Dewandre last autumn has been y redesigned and the revised model production. The adjuster is designed y for use on p,s.v.
lit is similar in construction to a nal slack adjuster and can be made suitable for brake camshafts having 3 on 1.5 or 1.25in. shaft diameters. n shaft of the basic assembly is carry a worm wheel, which in turn ly a second worm carrying a ratchet us mechanism is contained in a housing mounted on the side face sic adjuster and the ratchet is sur3y the boss of an adjusting lever rotate on the second worm shaft. A lilted in the adjusting lever boss with the ratchet and rotates the ft if there is sufficient relative moveween the adjusting lever and the ster body; the end of the adjusting innected to some fixed point on the it can be .operated manually, by ting the link, if required—such as tg new brake shoes.
here is excessive movement of the
arm, due to brake-liner wear, and e movement of the adjusting lever is for the pawl to rotate one tooth the ratchet wheel, adjustment takes 3 is very fine and the overall ratio of anism is such that the adjustment one-tooth pace with a cam having ire radius of 0,5in. is equivalent to )04in. at the shoe centre.