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Driving member
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advice needed please
I recently was checking oil and such under the hood of my p-car and I discovered that the fan blade was scraping just a little on the bottom of the housing. I thought I noticed a noise but it usually happens before its warmed up and its kind of faint.
Anyway my question is can this be adjusted or is the whole alternator going to need replacing ? It is an 86 carrera . thanks
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Jerry '86 coupe gone but not forgotten Unlike women, a race car is an inanimate object. Therefore it must, eventually, respond to reason. |
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08-28-2002, 05:06 PM
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Senior Member
Join Date: Jan 2001
Location: Left Coast, Canada
Posts: 4,572
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Jerry,
Take the fan belt off, and try to wiggle the fan around. If it moves, the alt bearings are probably on their way out. You can have a Auto-Electric shop re & re the bearings. Might as well check out the entire alt while you're there.
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'81 SC Coupe "Blue Bomber" "Keep your eyes on the road, and your hands upon the wheel."- J.D.M. |
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08-28-2002, 05:10 PM
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Driving member
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thanks doug for the quick answer
I will check it out this weekend.
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Jerry '86 coupe gone but not forgotten Unlike women, a race car is an inanimate object. Therefore it must, eventually, respond to reason. |
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08-28-2002, 05:16 PM
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Registered
Join Date: Jan 2002
Location: I'm out there.
Posts: 13,084
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I've just been through this myself.
If you are LUCKY, you will only need to repack the alternator bearings. If you are like ME, the increased wobble in your alternator shaft has already fouled up the brushes inside the alternator and you will soon be shopping for a new one. I hope it is only the bearings. 
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My work here is nearly finished.
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08-28-2002, 05:19 PM
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Friend of Warren
Join Date: Oct 2000
Location: Lincoln, NE
Posts: 16,537
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Hmmm, sounds like all the '86 Carrera alternators are going out at the same time. Check out my thread from Monday: HELP! - Wierd Noise and I'm nervous
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Kurt V No more Porsches, but a revolving number of motorcycles. |
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08-29-2002, 06:35 AM
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Senior Member
Join Date: Jun 2000
Location: N. Phoenix AZ USA
Posts: 28,977
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Jerry,
Had my alternator in the 85 overhauled 3 years ago by a local "mom and pop" store for under $75. Do not let anyone tell you that this alternator is special and needs to be done by a specialist. The replacement parts, with the exception of the armature, are all available locally and reasonably priced. Joe
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2021 Subaru Legacy, 2002 Dodge Ram 2500 Cummins (the workhorse), 1992 Jaguar XJ S-3 V-12 VDP (one of only 100 examples made), 1969 Jaguar XJ (been in the family since new), 1985 911 Targa backdated to 1973 RS specs with a 3.6 shoehorned in the back, 1959 Austin Healey Sprite (former SCCA H-Prod), 1995 BMW R1100RSL, 1971 & '72 BMW R75/5 "Toaster," Ural Tourist w/sidecar, 1949 Aeronca Sedan / QB |
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08-29-2002, 07:35 AM
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Driving member
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Thanks guys for all the input. I will be checking it out this weekend.
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Jerry '86 coupe gone but not forgotten Unlike women, a race car is an inanimate object. Therefore it must, eventually, respond to reason. |
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08-29-2002, 01:49 PM
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Registered
Join Date: Dec 1999
Location: TX USA
Posts: 9,804
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The fan housing may be cracked ...
So, after you take the fan belt off to test alternator bearings ... loosen the band clamp around the fan housing, too, and see if the release of tension on the housing alters the clearance problem! Cracks can be TIG welded to repair, just be sure the welder is aware that it is Magnesium!
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Warren Hall, Jr. 1973 911S Targa ... 'Annie' 1968 340S Barracuda ... 'Rolling Thunder' |
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08-29-2002, 02:08 PM
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Senior Member
Join Date: Jun 2000
Location: N. Phoenix AZ USA
Posts: 28,977
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Warren has a good point here. Mine was also cracked and they did it locally for $20 extra. Looks like new and has lasted 3 years with no problem.
Joe
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2021 Subaru Legacy, 2002 Dodge Ram 2500 Cummins (the workhorse), 1992 Jaguar XJ S-3 V-12 VDP (one of only 100 examples made), 1969 Jaguar XJ (been in the family since new), 1985 911 Targa backdated to 1973 RS specs with a 3.6 shoehorned in the back, 1959 Austin Healey Sprite (former SCCA H-Prod), 1995 BMW R1100RSL, 1971 & '72 BMW R75/5 "Toaster," Ural Tourist w/sidecar, 1949 Aeronca Sedan / QB |
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08-29-2002, 02:31 PM
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Hbrand
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FAN BLADE SCRAPING ON HOUSING
IF BEARINGS ARE OK, THE PROBLEM IS A BAD FAN BLADE, WILL HAVE SOME CRACKS AND IS GETTING BIGGER.
THEN YOU NEED A NEW ONE. LET ME KNOW, HAROLD |
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08-29-2002, 04:11 PM
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Registered
Join Date: Dec 1999
Location: TX USA
Posts: 9,804
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Harold,
Cracked fans can also be repaired by TIG welding!
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Warren Hall, Jr. 1973 911S Targa ... 'Annie' 1968 340S Barracuda ... 'Rolling Thunder' |
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08-29-2002, 04:17 PM
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1986 Porsche carrera coupe 3.2
Porsche 911SC Euro
Austin Helaye 100-4
