Wheel Cylinder

Wheel Cylinder

A wheel cylinder is a component in a drum brake system. It is located in each wheel and is usually at the top, above the shoes. Its responsibility is to exert force onto the shoes so they can contact the drum and stop the vehicle with friction. What connects these wheel cylinders to the shoes are usually small rods shaped like a birds beak.It is very similar to a master cylinder and functions in pretty much the same way, consisting of just a simple little plunger on the inside. On older vehicles these will begin to leak and hinder the performance of the brakes, but are normally inexpensive and easy to replace.

The wheel cylinder consists of a cylinder that has two pistons, one on each side. Each piston has a rubber seal and a shaft that connects the piston with a brake shoe. When brake pressure is applied, the pistons are forced out pushing the shoes into contact with the drum. Wheel cylinders must be rebuilt or replaced if they show signs of leaking.


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См. также в других словарях:

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  • cylinder — [1] The round chamber or hole in the cylinder block that houses the pistons and where combustion takes place. Also called bore or barrel. [2] Any tube like device. [3] A device which converts fluid power into linear mechanical force and motion.… …   Dictionary of automotive terms

  • Cylinder face — Face Face (f[=a]s), n. [F., from L. facies form, shape, face, perh. from facere to make (see {Fact}); or perh. orig. meaning appearance, and from a root meaning to shine, and akin to E. fancy. Cf. {Facetious}.] 1. The exterior form or appearance… …   The Collaborative International Dictionary of English

  • Cylinder (locomotive) — The motion on the left hand side of 60163 Tornado. The black casting to the left houses the cylinder, in which slides the piston; the piston rod is immediately above the wheel. The cylinders of a steam locomotive are the components that convert… …   Wikipedia

  • Wheel motor — The wheel motor (also called wheel hub motor, hub motor or in wheel motor ) is an electric motor that is incorporated into a wheel and drives it directly.Uses* Wheel motors are applied in industry, driving e.g. wheels that are part of assembly… …   Wikipedia

  • cylinder — noun Etymology: Middle French or Latin; Middle French cylindre, from Latin cylindrus, from Greek kylindros, from kylindein to roll; perhaps akin to Greek kyklos wheel more at wheel Date: 1570 1. a. the surface traced by a straight line moving… …   New Collegiate Dictionary

  • cylinder axis — Axis Ax is, n.; pl. {Axes}. [L. axis axis, axle. See {Axle}.] A straight line, real or imaginary, passing through a body, on which it revolves, or may be supposed to revolve; a line passing through a body or system around which the parts are… …   The Collaborative International Dictionary of English

  • wheel — n 1. circular frame, disk, round, roundlet, roundel, circle; ring, band, hoop, cordon, annulus; caster, roller; cylinder, drum; trolley. 2.Informal. bicycle, cycle, Inf. bike, tricycle, velocipede, unicycle, tandem. 3. turn, movement, rotation,… …   A Note on the Style of the synonym finder

  • cylinder hone — A tool that uses an abrasive to smooth out (hone) and bring to exact measurements such things as engine cylinders, wheel cylinders, bushings, etc …   Dictionary of automotive terms

  • brake cylinder — A cylinder containing a movable piston actuated by hydraulic pressure to push fluid through the lines and wheel cylinders and force the brake lining or pads against a drum or disc. Also see wheel cylinder master brake cylinder …   Dictionary of automotive terms


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