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Busted Alternator-A/C Belt
Hi guys,
I replaced the Alternator-A/C belt last summer (Conti from Pelican) and yesterday it snaped and pushed the PS belt as well (PS belt did not brake). The alternator pulley rolls freely as it should and the A/C pulley rolls freely as well. Any ideas why it broke? When it happened I had the A/C on. Is there a chance the A/C pump froze and if so how can I test it without the belt? Thanks, George. |
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06-12-2010, 04:34 AM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
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If the alternator spins freely...
Did you have your AC charged for the season recently? You could energize the AC clutch coil (turn the AC switch on) and try to hand spin the compressor. Too much AC oil may have damaged the compressor??? GL John
__________________
1988 924S, 85,750K ..+ 1987 924S, 154K DD (+15K est. bad odo) |
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06-12-2010, 05:32 AM
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unindicted co-conspirator
Join Date: Jul 2007
Location: Fresno, CA
Posts: 1,660
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can't you turn the compressor by turning the front part of the pulley?
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'03 996 - sport exhaust, sport seats, M030 sport suspension, stability control, IMS Solution ‘86 928S3 - barn find project car |
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06-12-2010, 12:10 PM
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Quote:
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06-12-2010, 12:33 PM
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Quote:
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06-12-2010, 12:35 PM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
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The compressor, Look at the mounting tabs "ears" and check to see if one may have cracked.
Do the same for the alternator. The resistance on the compressor is normal with the clutch engaged and the internals of the compressor pumping. GL John
__________________
1988 924S, 85,750K ..+ 1987 924S, 154K DD (+15K est. bad odo) |
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06-12-2010, 04:36 PM
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Automotive Necromancer
Join Date: Nov 2006
Location: Beantown, MA
Posts: 1,544
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check
Check that the alternator pulley has the same number of grooves as the crank pulley in case you have a rabbit pulley. Next check alignment with a piece of string.
Let me know what you find
__________________
There may be nothing quite as expensive as a cheap Porsche: Ruby Red 84 928S : White 87 924s 2.5L NA (Blinky) M44/07-43H10676 spoiler delete - 046/2B - Belts 9/12, Clutch and OC seals 8/08 andd Red 94 Del Sol: Please put your Make, Model and Year in Sig. Try not to break more than you fix. |
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06-13-2010, 07:38 AM
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Hi guys,
I checked everything, adjusting rods, alternator and compressor mounting tabs, everything is fine. Installed new belts and started car. Both belts run straight and true. Everything is good. I can not even guess what happened. Belt was a new Conti with less than 8,000 miles on it that got shredded to thin strips wrapped around the engine pulley!!! Many thanks to all of you for your thoughts, you are GREAT !!! |
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06-15-2010, 01:50 PM
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