Typical U Joint Configuration Illustration There are other types of flexible couplings such as a Thomas or Oldham joint. These joints use a rubber fiber flex material and are mainly used for low power applications. Sometimes, when replacing a "U" joint you may need to replace the axle assembly depending on the design of the car. Some manufactures allow the joint to be replaced separately; you will need to check with a part supplier to inform you on which type your car has. When a "U" joint fails it can cause a rapid clicking or squeaking noise that occurs when the car is being driven and is usually more audible at slower speeds. Also, a "U" joint can cause a fine rust colored powder in and around the "U" joint caps when the joint has failed. This dust is the result of metal contacting metal with no lubricant under extreme pressure.
Universal or "U" Joint If further assistance is needed, our certified car repair technicians are ready to answer your car questions. Related Car Repair Information