Boom end rollers - hammer, fire, oil?

[antaris]

Thanks everybody for the answers ?.

I will try without removing the end first, then go the full way if unsuccessful. I now have noted all potential solutions and will get to it during this week! The postal service/couriers seem to be inindated currently, so trying to make-do with what's available...

 

[William_H]

Ah the problems of ali stainless steel and possibly bronze sheave all neglected over years. I do under stand.
If you decide to remove the whole fitting from the boom then it is likely you will have corrosion holding it in the boom making it difficult to remove after rivets have been drilled out. You might have to cut the boom itself and cut and peel off the piece of boom attached to the fitting. All that assuming you can afford to lose 40 cms or so of boom length. or you might try just cutting around the boom about 20cms from end so sacrificing 20cms in the hope that after removing that much the rest can be pulled out.
Or as said leave the fitting in the boom and take it all to a workshop.
As said it is likely the tubular axle has been expanded at each end to hold it in place so try drilling into it with a bit about the size of the outside of the axle. Drill doewn a bit then try hitting the end of the tube with a punch or rod of the same size as the axle. Use a carefully calibrated bashometer (AKA a lump hammer) with the fitting on a solid base. (anvil)
I have a tiny gas torch that can be used as a soldering iron or gas torch which would in size be just right to blast down into the axle. If perchance you had one of these. Perhaps a small electric soldering iron shoved inside the axle might provide enough heat to free things. Either the sheave or the axle.
If you do destroy the axle then a ss bolt with nut on the other side would not look pretty but serve for a new axle. Or a piece of SS tube peened over at the ends or even ss rod peened over to keep it in place. Just a few thoughts . Best wishes ol'will

 

[antaris]

I have a tiny gas torch that can be used as a soldering iron or gas torch which would in size be just right to blast down into the axle. If perchance you had one of these. Perhaps a small electric soldering iron shoved inside the axle might provide enough heat to free things. Either the sheave or the axle.
If you do destroy the axle then a ss bolt with nut on the other side would not look pretty but serve for a new axle. Or a piece of SS tube peened over at the ends or even ss rod peened over to keep it in place. Just a few thoughts . Best wishes ol'will

Strangely enough, I do have this small soldering torch thing - so will use to locally apply heat and see what happens.

Weird how confident manufacturers are sometimes; hammering things into place - sending to sea, hoping it will all be ok, as owner will surely be oiling, cleaning and rolling parts into the future...

 

[Iliade]

Do carefully measure the size of both holes in the casting... It may only come out in one direction.

I have been caught out by that old chestnut before ;p)