Saturday, August 21, 2010

Moss Gearbox


This the original type JH Moss 4 speed gear box. Not the original number box but a proper long mainshaft type box. First shot is of the empty clean case. Then the reverse gear and selector are installed. Then the counter shaft is installed. The assembly actually had to stop here because the end float for the counter shaft was 0.009 over correct fit and a new bronze bushing had to be ordered. The counter shaft is not actually in place as it needs to sit below where it will ultimately reside in order to allow the constant motion shaft to clear. Then after the mainshaft, which is shown installed in the last shot, and the constant motion shaft, which sticks out the front of the box and slides into the flywheel, are installed, then the counter shaft is raised into the proper location and the actual shaft is installed from the back. Most of the parts here have been scrounged from the 4 Moss gearboxes that I have laying about. So far the gears are all pretty good, and I was able to dig up a used mainshaft, but the front case bearing has 0.012 too much end float.

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