The modern automatic transmission is by far, the most complicated mechanical component in today's automobile. Automatic transmissions contain mechanical systems, hydraulic systems, electrical systems and computer controls, all working together in perfect harmony which goes virtually unnoticed until there is a problem. Inside the transmission is a series of gears, bearings, shafts and Synchros which are used at various times during the transmission's operation. These components are lubricated by transmission fluid or gear oil inside the case. Most transmissions contain three shafts: input, output and counter or lay shaft in which the gears and bearings reside. 41. The manual transmission's shifter in a light-duty truck feels loose and has excessive play. Which of the following is MOST likely causing this condition? A. A worn shifter bushing. B. A worn detent ball and spring. C. A bent shift rail. D. Bent shift rod linkage. 42. Various components of a manual gearbox. (photo credit: ZF) 1. Clutch and Clutch Pedal Consisting of various small components, the clutch transmits engine torque to the transmission. The clutch pedal is a hydraulically controlled piece of gear that disengages the clutch when you depress it. 2. Flywheel In simple terms, a manual transmission operates with power coming in through the input shaft, which drives the intermediate shaft. The intermediate shaft has fixed gears, actuated by the driver, which drive other gears that ride independently on the output shaft. With the aid of a clutch fork, a collar slides over splines on the output shaft The driveshaft is most commonly made from steel, but can also be made from aluminum or in exotic cases carbon fiber. Rear Axle: The rear axle is found on RWD, 4WD and AWD cars, trucks and SUVs. The rear axle takes the rotation of the driveshaft, turns it 90 degrees and distributes it to the two rear wheels. It's job is to make sure that power The Shifting Wire Is Stuck. The shifting cable is stuck, which is the second reason why a manual transmission won't engage any gear. A shifting cable moves the selector shaft in a manual transmission. It is linked to the vehicle's shifting lever. They can't move the transmission lever if the shifting cable is blocked. Most engines will use either a timing chain or belt that wraps around gears connected to the crank and camshafts. The belts and chains are both responsible for keeping everything in sync, but they each have slightly different characteristics. Timing belts are made from steel-reinforced rubber and naturally wear out over time. The manual transmission can jump out of gear because of worn mounts or loose linkage. It's also caused by bad shifter bearings or a weak spring in the shift rail. The worst-case scenario is that something is internally wrong with the transmission, requiring a rebuild or replacement. In this guide, we examine the top causes. This is because the transmission fluid provides lubrication to gears, bearings, shafts, and other internal components. Heat, pressure and friction can slowly breakdown the additives in the manual transmission fluid and contamination occurs over time as the synchronizers, bearings and gears in the transmission wear out. Shift into first gear. Without releasing the clutch pedal, shift into neutral. Wait for five seconds. Shift