1988 Spider alternator belt help - Alfa Romeo Bulletin Board & Forums

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post #1 of 8 (permalink) Old 03-13-2017, 04:12 PM Thread Starter
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1988 Spider alternator belt help

While driving the other day, the alternator belt must have broken off. Does anyone have a diagram on how a new one goes back on? Also, what is the best way of going about putting it on?
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post #2 of 8 (permalink) Old 03-13-2017, 05:39 PM
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Loosen the alternator mount (bolt #2), push the alternator in/down, maneuver the belt over the crank pulley, the water pump pulley and the alternator pulley. Now pull the alternator out/up to tighten the bolt. Properly tight is hard to explain - press on the long run of the belt with your thumb. If you can deflect it about 1/2" that's about right. Too tight is not better - it just puts too much strain on the alternator bearings. Too loose will allow the belt to slip & squeal.
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~ 1984 Spider Veloce ~
- -~ 1981 GTV-6 ~
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post #3 of 8 (permalink) Old 03-13-2017, 06:02 PM
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additional missing steps. first loosen #1 (do not remove, simply loosen), then loosen #2 loosen #3, install belt (you will have to rotate fan by hand to get belt over fan) tighten belt (push down on alt.) tighten #2 then tighten #3 then #1 tighten

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post #4 of 8 (permalink) Old 03-13-2017, 06:13 PM
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Well, I don't tighten #1 & #3 so tight that I can't move the alternator...

And, if you have A/C then you need to first remove the A/C belt to replace the alternator belt. The crank pulley for the A/C belt has a removable outer half - remove it to remove/replace the A/C belt. Keep track of the shims (thin metal rings) between the two halves. This is how the A/C belt's tightness is adjusted - add shims to make the pulley wider & the belt runs lower & looser. Remove shims to make the pulley narrower & the belt runs higher & tighter.
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- - Eric
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~ 1984 Spider Veloce ~
- -~ 1981 GTV-6 ~
Mebane, North Carolina


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post #5 of 8 (permalink) Old 03-15-2017, 05:33 PM Thread Starter
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Of course I have the air conditioning model. Is there a diagram that is pretty simple to understand like the alternator belt?
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post #6 of 8 (permalink) Old 03-15-2017, 06:32 PM
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From the Series 3 Spider Owners Manual.
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- - Eric
don't read this
~ 1984 Spider Veloce ~
- -~ 1981 GTV-6 ~
Mebane, North Carolina


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post #7 of 8 (permalink) Old 03-15-2017, 06:50 PM Thread Starter
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You are always so helpful, thank you
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post #8 of 8 (permalink) Old 03-15-2017, 07:22 PM
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Handsome, too. Don't forget handsome. And modest - that goes without saying.
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- - Eric
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~ 1984 Spider Veloce ~
- -~ 1981 GTV-6 ~
Mebane, North Carolina


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