Conventional gearboxes ordinarily have two sets of gears: input and output. the input & the output. The input gears are preset on the countershaft, producing them solitary units. It drives the individual gears on the key shaft, which rotate freely on the bearings. So by locking any one’s equipment, https://johnnyzimqi.boyblogguide.com/32826294/the-definitive-guide-to-gearbox