Harley Davidson 4 speed Gearbox Exploded View

The early big twins 4 speed transmission from 1936, this excelent piece of engineering will serve the later models up to the 70's with only minor changes like breather location and 5th mounting point. , the dual drilled and unique root clutch lever shape 36 -39 and the one piece kick starter arm / shaf up to 1953 and the external spiral kick return spring ...the main shaft ( bottom row) supported by 44 rollers on the final drive and a standard bearing on the other side just in front of the 1st. and second gear which are made from one piece, above it the Counter Shaft and its components with the spiral crown which drive the speedo shaft. the counter shaft core have two rows of rollers bearings, above it the two shifting forks and there sliding bushings and shimming and above them is the shifting cam - barrel style with two races for each of the two shifting forks. the shifting cam is driven by a semi toothed gear and its lever which linked to the shifting handle on the fuel tank, from 1952 the same gear got a foot shift arrangement recognize by the different top cover....

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