"Rob Graham" wrote in message
...

I posted a mail some 4 weeks ago about freeing up a garden shredder which
had seized through lack of maintenance - mine!!

Pressure from the head gardener(!) plus seeing how much a new one would
cost has encouraged the DIY approach with heat and brute force enabling
removal of the end plate. This allowed access to the grinder wheel and the
bolts to take the epicyclic gearbox off the motor.

Because the grinder wheel goes so slowly, just plain steel bushes carry its
shaft in the aluminium housing and end plate. These bushes are now running
freely, but the end plate one came out with the shaft, so will have to go
back into the end plate first.

I guess this will be an interference fit needing heat / freeze.

The question is just how much - I can't do more than -20C for the steel
bush, but how much heat will the aluminium end plate casting take?

Thanks for any help.

Just smear it with Loctite high strength retainer and push it in by
squashing in your vice (unless you have a press?)

Andrew