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WHEEL DRIVE AUTO PARTS: JOINT PROPELLER SHAFT
Joint disk / Hardy disk can replace the joint in the cardan shaft. The cardan shaft connects the gearbox to the rear axle. Therefore, it is necessary in the cars that have drive on the rear axle. Typically, joint disk/ Hardy disk is situated between the cardan shaft and the gearbox driven shaft. The disk is made of rubber or similar material and is surrounded by two metal pillows. Hardy disk was named after the inventor John Leslie Hardy.In the cardan shaft can occur displacements. Without joint disk/ Hardy disk there would be a strong pressure on the material. In addition, the gearbox and the drive would be affected. The flexible connection provides the displacement alignment. In addition, the disk absorbs small shocks and vibrations. This makes it possible to install a smaller cardan shaft. This reduces the costs any durability and safety losses. In some vehicles joint disk is situated between steering box and steering wheel. The joint disc / Hardy disc is usually vulcanized in metal liners. However, there are models where the disc has a free position between two support members. A popping noise when starting, changing loads or switching usually indicates that the joint disk is damaged. When you replace the disk, it is necessary to note cardan shaft's position on the steering box not to make a mistake when mounting. You can order many other spare car parts in our Internet store. Here you will find injection valves, rear muffler, flange, transmission bearing, or parking brake cable. With the help of our effective search function you will quickly find the car parts you need.
HOW TO DETECT THE PROPELLER SHAFT COUPLING FAILURE
The part examination should be performed every 50,000 - 70,000 km. Cracks, breaks, scuffs, chips, delamination, excessive softness or hardening of the material indicate that the part has failed. It should be dismantled for a more thorough diagnosis. Typically, small cracks become visible only when the coupling is under stress. So to detect them you have to create the conditions that simulate real operation, for instance, mount the coupling on a fastening bolt clamped in a vice and stretch а corresponding coupling section with the help of a screwdriver inserted into the adjacent hole. This procedure should be repeated for each hole in sequence on both sides.
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