02-10-2019, 10:15 PM
I would get it up somewhere around 150c at which temperature there its a reasonable expansion of the bronze but not enough to affect the temper of the gears. When re-fitting the gear should be cold and the ring will drop straight on without any real force, it will immediately cool, shrink and be a tight fit so work quickly. They are a very close fit and it is easy to damage the internal spline of the ring.
Terry appears to be respected in some circles with some experience with gearboxes, so if he is able to stake successfully you may be well advised to simply press the ring back home and stake heavily with a blunt centre punch. I am not promising it will work but you could make the situation worse if you remove and replace the same ring than simply attempting to stake it back in place. I have had several gearboxes come to me where the previous builders staking has not worked, but that is not to say it will always fail.
I would suggest that the Lay gear at least is not the original Nippy item, quite why it has been replaced I would not like to say perhaps some damage occurred in the past?
Terry appears to be respected in some circles with some experience with gearboxes, so if he is able to stake successfully you may be well advised to simply press the ring back home and stake heavily with a blunt centre punch. I am not promising it will work but you could make the situation worse if you remove and replace the same ring than simply attempting to stake it back in place. I have had several gearboxes come to me where the previous builders staking has not worked, but that is not to say it will always fail.
I would suggest that the Lay gear at least is not the original Nippy item, quite why it has been replaced I would not like to say perhaps some damage occurred in the past?
Black Art Enthusiast