I'm about finished with my chapter on reconditioning the girder forks.
Loads of info, engineering drawings, contemporary articles, dimensioned parts & etc.
I only ask a mere $5.00 per chapter for months of work and research. PayPal as a friend.
Go to the technical section of the forum and read the clutch article. Yep, just like that...
Rebushing is a piece of cake as we say here in the States.
Just make a drift of two diameters and long enough to go to
match the length of the bushing tubes. Whack 'em out with a hammer.
Insertion is the same way. just start each on on it's respective side
so you end up flush with the outer rim as you see from were they were originally.
These are easy to true also. Too long to explain sans fotos. PM me and I can help you.
There are a gage or two you may need to make to get best results.
While you are at it, check thoroughly for any cracks or weak brazing. It's a good time
to do this. These things take a pounding.
Bushes being made now. A waist of time freezing them, the steel would warm them up before you ever got one in with a threaded bar.
Press them or pull them, but remember a big hammer is for skilled hands only or a lot of damage could be done.