2.4 Alternator Belt - Alfa Romeo Forum
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(Post Link) post #1 of 16 Old 30-08-16 Thread Starter
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Hmmm 2.4 Alternator Belt

Editing the original post, because it is a silly thing. Took like 5 minutes for a mate and myself....
-You have to remove the top nut on the alternator and loosen the lower one to let it pivot down as much as it can.
-Then you have to remove 2 of the 3 AC bolts. Keep the upper left one. AC can pivot UP on the bolt. 90% of the people I asked told me not to remove AC bolts... wrong.... veryveryvery wrong... anyway..
- place the belt on the AC pulley (inner side) and start feeding the belt to the ALTERNATOR pulley, while rotating the pulleys by hand. Easy, really.. you will see..
- Mate of yours have to watch belt on the AC pulley to make sure it is not moving to the outer part of the pulley (screwdriver, crowbar or whatever, don't need to use force). If not, the belt will just walk to the outside part of the pulley, you don't want that..
And that is it, belt is on.

Now, using a crowbar, force the alternator back in place. Gently, no need to manpower it. Screw the bolt in place, alternator done.
Remember the AC pivoting upwards on a not to happy bolt? There is quite a "pressure" on that bolt now... So grab a floor jack and lift it's ass back in to its place. This one is tricky, because if you lift it "badly", the compressor will move up and OUT. Which is bad. Just find the right spot and tools to lift it back. Bolts in, done.


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Hi there,

I'm doing a BIG service on my 159 2.4, including rotors & pads, belts, water pump, intake manifold cleaning, swirl flap delete, new crankshaft pulley, broken exhaust studs..... and whatever it is throwing at me during the process (like... failing engine mounts and leaking steering rack, to name a few) .... there has been a lot already..

But I got stuck with the alternator belt install. I haven't found any tools that would fit our application and I'm not able to stretch the belt enough to fit over the pulley.
Searched Youtube, didn't help.
Searched the forum, tried the "undo the upper bolt on the alt that will pivot it..." yeah, like 2mm.. not helping much. Also undoing AC or alt would just generate a bit more PITA when it comes to bolting it all back together. For other makes I could find tools for this but I can't adopt them.

Some people claimed they found a way to fit the belt, but not mentioning how..
Could someone enlighten me, please? It is quite frustrating...

Thank You in advance
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'06 159 2.4 JTDm Qtronic. My first Alfa ever!
'97 Volvo 940 Estate. T5 engine (2.3 5pot turbo, from 850), modified ECU, locking rearend... the fun car

Last edited by Nari; 11-09-16 at 19:37.
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I used a approx 20 inch long crowbar to help the alternator move a bit more than it wanted to on its own (1 bolt still in place to pivot it..You will never get it in place again with belt on if you remove it completly) ...& A LOT of sweat, pain and very VERY nasty words, before mine got into place. Use a jack under the alt when belt is in place to raise it up enough to mount the remaining 2 bolts..

Sorry..But this must be the worst ever thing i“d had to do to any car owned during 27 years of "self-service"...Theres no easy way :-(

Which of the enginemounts are you changing? Mine sometimes gives a "clonk" when changing gears under hard acc. Better get a look down there soon..
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Originally Posted by Chipmik View Post
I used a approx 20 inch long crowbar to help the alternator move a bit more than it wanted to on its own (1 bolt still in place to pivot it..You will never get it in place again with belt on if you remove it completly) ...& A LOT of sweat, pain and very VERY nasty words, before mine got into place. Use a jack under the alt when belt is in place to raise it up enough to mount the remaining 2 bolts..

Sorry..But this must be the worst ever thing i“d had to do to any car owned during 27 years of "self-service"...Theres no easy way :-(
I haven't find anything else as a solution... I might have to take a second look at this procedure. Sigh I really can't believe there is no better solution. Damn VW group has so nice tool for the elastic belts.

Anyone form Autolusso reading this? Any words?

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Which of the enginemounts are you changing? Mine sometimes gives a "clonk" when changing gears under hard acc. Better get a look down there soon..
Front one feels wonky and shredding rubber. Car felt shaky on idle in the past weeks.
And the lower one also looks tired.
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Originally Posted by Nari View Post

Front one feels wonky and shredding rubber. Car felt shaky on idle in the past weeks.
And the lower one also looks tired.
That doesnt sound like enginemount? Sounds more suspensionrelated?
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In true style my aux belt came loose just before my holidays. Fortunately I was going on a plane and a hire car so after realising the bottom pulley fell in two pieces (bonded rubber) and whilst waiting for the RAC I phoned an Alfa specialist to fix it whilst I enjoyed some Italian hospitality (which is another story).

He replaced the pulley and a new belt (whilst he was there) but did half joking ask me if I could take it somewhere else

He commented how bloody tight and awkward they are to do.
I was not going to ruin my lovely office hands stuffing them up the 159's gob
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Priorities I find, are usually someone else's.
Statements above are all my own opinion and not fact.
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Could only been the big belt you lost Wexley...Which takes like 10 mins. to Replace, not the small stretched belt for the generator, coupled to a/c compressor ;-)....My gen. Belt failed..So unfortunate it went behind aux. pulley you lost & got eaten by the cambelt..Which eventually snapped....Which like 1:5000000 happened 2 mins the car was parked to have all belts changed...Life is SO kind to you every now & then
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Originally Posted by Chipmik View Post
Could only been the big belt you lost Wexley...Which takes like 10 mins. to Replace, not the small stretched belt for the generator, coupled to a/c compressor ;-)....My gen. Belt failed..So unfortunate it went behind aux. pulley you lost & got eaten by the cambelt..Which eventually snapped....Which like 1:5000000 happened 2 mins the car was parked to have all belts changed...Life is SO kind to you every now & then
Not sure about that, my power steering and A/C did not work (actually not 100% with the A/C) My A/C does not work since they replaced the belt though. There was no alternator either - Battery light was on.
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Not sure about that, my power steering and A/C did not work (actually not 100% with the A/C) My A/C does not work since they replaced the belt though. There was no alternator either - Battery light was on.
with no servo it was the big "easy" belt then :-) Think A/C problem is unrelated to the loss of belt ;-)
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with no servo it was the big "easy" belt then :-) Think A/C problem is unrelated to the loss of belt ;-)
So they lied to me. I also just had the A/C regassed prior to the pulley drop.
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That doesnt sound like enginemount? Sounds more suspensionrelated?
no... I meant, engine mount in front of the engine (cylinder one, timing side, whatever you want to call it), left side in the engine compartment.
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I am getting a little concerned about this belt thing, my timing belt is due in the next few months or so and I have just bought the bits to do the job. I thought the 156 was a bit of a pain to get on, this sounds like a "sell the car and get a new one" time.
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I am getting a little concerned about this belt thing, my timing belt is due in the next few months or so and I have just bought the bits to do the job. I thought the 156 was a bit of a pain to get on, this sounds like a "sell the car and get a new one" time.
I can do it in approx 3 hours in my driveway ;-)
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I can do it in approx 3 hours in my driveway ;-)
Denmark is not that far away is it?
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Denmark is not that far away is it?
Haha No, but better hurry...In 2 days ill be offshore for 2 weeks...& then it starts raining & my hour-rate is incredibly high when the weather sucks & Alfa is the workplace
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Wave

Deployment of the belt-alternator AC
dismantling the bumper and radiator-AC remains filled only with cooler set aside.
!!! if the alternator removed from the vehicle in no case does the lower bolt backwards (nut to body) if so necessary to shorten the bolt about one centimeter.
If this fails to not tighten the second belt !!!
Conditioning compressor bolted to have all three screws - unfinished
Alternator mounted at the bottom of the screw, the top removed.
The belt by rotating compressor pulley wound, subsequently between the compressor and Alternator The inserted tire lever and insert the upper screw alternator ..
Tighten the compressor and consequently the alternator.
Fit and second belt before fitting the radiator and bumper to start the engine if everything works as it should.
Good luck..
Alfa Forever ...
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Thx guys for good tipsjust did my belt, and have to say this is the absolute worst thing i ever had to do on a car....just pain..but got it on even changed ac clutch bearing. Managed to find a small leak in ac pressuresensor, just neded to be tighten up.. so happy man now
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