Quote:
Originally Posted by JohnH
OK I am not a diy-er but am interested how do remove the grease - soak in petrol/solvent?
On reassembly - how do you set nad measure the tolerances?
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Any suitable degreaser will do the job just be careful with rubber bits (remove them) as they tend to swell and don't use anything that will damage paint (Kero is good).
Setting clearances is an art and takes a bit of practice (I used to own a 900SS bevel drive Duke which I rebuilt often to avoid having the big ends shatter into the crankcase. These motors have shims everywhere so you soon get used to setting clearances).
The transfer gears on the mounts are involute gears and to cut a long story short need to be as fully engaged as possible without any binding present due to the shape of the teeth (see involute curves). As these are difficult to measure using tools (fine teeth) it has to be done by feel or as I often do fold a rolley paper in half and work it into the teeth of one gear then simply set the other as close as possible without cutting the paper. This brings them close together but ensures that they are not binding and comes out when you rotate the gears. You also need to make sure that the grub screws holding the gears in place never meet (ie should always be on the opposite side as the gears turn) as they pull the gear off centre and this will cause binding. The worms are set by feel e.g. too much backlash or movement tighten them up evenly a little bit at a time, bad noises or sticking loosen them up in the same manner. Don't try this if you are not confident, get someone who is to do it for you.
Mark