I did this to my planes IMHO it's was needed for this particular plan a newish jack no 5 which had a lot of slack around the y lever and pin which was bent and out of square with the frog gullets there was also slack on the adjuster wheel nut as well.
Primarily I wanted to remove as much slack from the plane as possible, I wanted to adjust my plane whilst using it with the slightest touch in either direction when I took the frog to pieces it was easy to see what the problems were, bent securing pin, out of square with the frog gullets, and a lot of slack around the y lever hole where the pin slips through, and slack in the yoke lobes.
So I sat and thought about how to remove as much slack as I could. The two other threads on this subject dealt only with the nose of the y lever to take into account the extra length needed to cope with the thicker blade from lie Nielsen, which in itself is fine, as I know works OK.
When you look at the y lever it like a nodding donkey in an oilfield with three-point of contact
1. the nose 2. the pin 3. the yoke lobes on the y lever poorly engineering)
The main work will be to the y level itself, which the metal quality to it in itself is very poor so do be careful how you handle them whilst working on it, First, I started by drilling the hole through the new larger centre pin to accept the old-style centre pin which has to be a snug fit.
LH photo This is the offending plane. RH photo old chuck set in vice whilst drilling.
LH photo the y lever before and after being drilled
MIDphoto drilled with the new short centre bar still to be drilled
RH photo assembled temp in Y lever
Both LEFT & RIGHT PHOTO temporarily assembled in the frog in these two photos, here the y lever is still to be lengthened to fit the thickness of the lie Nielsen blade.
Photo showing y lever recess in old Stanley chip breaker, with new thicker lie Nielsen blade behind, it can clearly be seen the y lever nose now need to lengthen and made slightly thinker to fill recess in chip breaker to eliminate any judder or backlash in blade movement.
Preparation of the y lever, its fiddle buy can be done by now you should be asking your self do I have the skills to do this if you don't feel right about doing it your self then ask someone else.
Be very careful with the heat you won't need much, flux the job well and the solder itself, it will help it to run easier, I couldn't manage to solder and take a photo at the same time so I'm sorry no photo of the job being done.
various stages of construction of new shape to nose on the y lever.
LH photo This Photo showing fine shavings coming from the plane which I'm sure I can improve on a little more.
RH photo offending plane AFTER the finished plane with the lie Nielsen blade fitted.
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