Transfer Case : A transfer case is used as an additional gearbox for the transmission to engage 4wd, Awd, 2wd, 4wd low, Awd low and neutral for all wheels. The transfer case is used on all wheel drive of 4 wheel drive vehicles. On these setups, an additional driveshaft or driveshafts are used in conjunction with the 2 wheel drive driveshaft or driveshafts so that all of the wheels on the vehicle are connected to the output of the transmission. Basic transfer cases use a common mechanical shift mechanism similar to a manual transmission setup using gears, a synchronizer, and a shift-fork – slide mechanism. Many other transfer cases use additional parts such as a shift motor, sensors, a transfer case module (computer) and or buttons to shift. Some transfer cases are used for full time all wheel drive systems meaning, they do not shift, they only help distribute the transmission drive to all of the wheels.
How do transfer cases go bad? There are a wide variety of styles of a transfer case. Many transfer cases contain wearable parts.
Often times on most newer vehicles, a transfer case system will indicate a problem using a 4wd light, warning light or check engine light. Other problems my be noticeable such as loud sounds like chain or gear noises coming from the transfer case. Leaking problems from a transfer case pose a problem and, when left ignored, cause far bigger and more expensive problems. Any time a transfer case has a problem, you should bring it in to the mechanic to get it checked out promptly.
Visit Guy’s Automotive for all types of drive-line and transmission repairs. Checkout our website for more details on specific parts or specialized jobs performed.