Hi, I've had a noisy compressor clutch bearing on SRH14914 (1973) for a while so I removed the compressor to try and change it. Replacement compressors are expensive in UK and also I don't actually want a/c, it's just acting as an idler for the PAS belts. I think I need a puller to get the clutch off - is this a 22mm thread please? i have a similar puller designed for removing bicycle cranks but that seems to have a finer thread. Thanks.