rumbly air con compressor

[cc]

In the process of putting the serpentine belt back on and the air con drive wheel was spun by hand. It sounds very dry and rumbly... Is this normal?

[poohbah]

I'd say no. I just had same issue with mine - It got progressively louder and worse over a period of about 3 months. Had the compressor bearing changed, and all good.

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[bazzbazz]

If the A/C works well and keeps you cool the bearing can be swapped in situ without re-gassing, how ever if its not cooling the best your better off to replace the whole unit.

Baz

[cc]

Baz
How is the bearing pulled in situ?

[bazzbazz]

Just thought about it and till now have only replaced the compressors on 156 V6 cars. Only done in situ bearings on 156 TS & JTS.

Would need to know what brand and model compressor your 156 is fitted with. Certain brands/models it can't be done in situ and have to be removed. Also depends on how your Piping is routed.

Design Continuity is NOT a principle that Alfa Romeo seems to be familiar with!   

Baz