156 alternator belt - Alfa Romeo Forum
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156 alternator belt

hi, im looking for a link or a guide to replacing the alternator aux belt on a 156 t-spark 1.8 ive looked at the car & it looks a bit difficult to do or is it , any help would be appreciated.
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Re: 156 alternator belt

It's fairly straightforward, but there's not a lot of room between the end of the engine and the inner wheel arch so it is a bit fiddly. Take off the small cover above the belt (5 mm Allen key to remove the two screws and take the nut off the end of the stud holding it to the air con compressor. Before you remove the old belt make a sketch of how it loops around the two tensioners, the crankshaft pulley and all the things it drives. Put a 15mm ring spanner on the bolt in the centre of the sprung tensioner - that's the one near the alternator - and turn it as far as you can anti-clockwise. You'll find you're pushing it against a spring, taking the tension off the belt. I found it easier to remove the top engine steady before doing this as it gives you a better chance of holding the tensioner back without dropping the spanner. You should be able to slip the belt off the air con compressor pulley now. Replacement is the reversal of removal, as they say.

Last edited by Il Dottore; 26-01-08 at 17:54.
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Re: 156 alternator belt

The hardest part is removing the fixed tensioner which should really be changed when the belt is done. You need a 15mm swan neck spanner as the bolt is recessed, and a socket won't fit due to lack of space. I however shortened a socket buy cutting off the square drive part, then welded half of a spanner to it. It worked a treat.
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Re: 156 alternator belt

Yes, that bolt is difficult to undo. I got hold of a swivel neck socket spanner to do this. It's still a tight squeeze though.
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Re: 156 alternator belt

I spent 3 hours trying to loosen that tensioner...and failed. Used a spanner initially, failed miserably, then a rachet ring spanner, and failed, then I extended that ring spanner with a piece of exhaust about 3 feet long from a punto....and failed. By christ that is bolted on tight. In the end, I gave up and will send to mechanic to do it. Swan neck needed alright though. Good choice!
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