03-08-2020, 11:32 AM
"Lapping gears"? Yes, I believe it does. But is is a long process.
I spent a day on my spare box - probably 3 or four hours' worth of lapping if you added it up, which got it into a usable state.
I reckon another hour or two would make it from "usable" to "good".
But it restores a box for which spares are not available.
I have not had much success with the turning of the gear through 120 degrees, I suppose the worm is always worn anyway.
If you do take the gear off to turn it, do not, whatever you do, hit the threaded end to try and knock it through the gear.
Hitting it will mushroom it, and fixing that is a pain. And, having wrecked it, the gear is still fixed tightly on the shaft.
I made a puller from 1/4" bar, which eventually did the job. But had to grind the gears in, after all.
I spent a day on my spare box - probably 3 or four hours' worth of lapping if you added it up, which got it into a usable state.
I reckon another hour or two would make it from "usable" to "good".
But it restores a box for which spares are not available.
I have not had much success with the turning of the gear through 120 degrees, I suppose the worm is always worn anyway.
If you do take the gear off to turn it, do not, whatever you do, hit the threaded end to try and knock it through the gear.
Hitting it will mushroom it, and fixing that is a pain. And, having wrecked it, the gear is still fixed tightly on the shaft.
I made a puller from 1/4" bar, which eventually did the job. But had to grind the gears in, after all.