Thor Air Con compressor Pulley

Hi all,
I have been given a V8 Thor Air Con compressor which I am told is good apart from the pulley bearing which is noisy and feels rough.
Is it a DIY job to replace the bearing, or is it considered a Non Serviceable part as is a lot of modern components ?
Would be good to have some info before attempting to strip it down, and if anyone has done this job, some insight would be appreciated.
Cheers.

Pulley bearing is servicable, you should be able to get one from a bearing factors like www.simplybearings.co.uk if you read the numbers off the old one and go about changing it the correct way.

Cheers Wammers.
Will strip it down and get the bearing number at the weekend.