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07-24-2015
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#1 |
 Join Date: Aug 2009
Location: Livermore, Ca
Posts: 204
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Diode Air Conditioning Clutch
Does anyone know what type of diode to use on the AC clutch coil?
I have 1N4004 diode but I think that for an 89. Anything for LT5? If not I'll give 1N4004a shot.
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1990 ZR-1 #642 |
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07-24-2015
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#2 | |
 
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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Re: Diode Air Conditioning Clutch
Quote:
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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07-24-2015
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#3 |
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Join Date: Jun 2009
Location: I live at Devens, one run at a time
Posts: 455
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Re: Diode Air Conditioning Clutch
A diode across a coil is there to absorb a surge when the magnetics release. It's not like it's a constant current thing. That diode should be fine.
GL, - Jeff
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[I]91 ZR-1 #1840, autocrossing in SCCA BSP. FIC S/S's DRM chip/Watson/Borla/lid/LW batt&headlights, springs, shocks, pads & lines, quick rack & Turn One, camber brace, 32/22mm sways, A/C halfway deleted 17x11 & 12 CCW's, 315 & 335 Hoosier A6s [/I] |
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07-24-2015
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#4 |
Join Date: Jul 2005
Location: Las Vegas, Nevada
Posts: 777
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Re: Diode Air Conditioning Clutch
LT5 clutch is different than the standard. It is unique due to the higher RPM I believe.
When I bought my Z, the belt was shredded. I put a new belt on and within a week, it was shredded also. I looked through all the receipts that came with the car, and found where the a/c clutch had been replaced. I referenced the pn and it was for the LT1. I showed this to the dealer, and he replaced the clutch with the correct one for free, even though it was the previous owner who had it replaced.
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JB 1990 #148 Red/Saddle Haibeck AYBKG5 Chip/RC Engineering/Flowmasters/K&N/Samco/Fuzzy Dice :cheers: |
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07-24-2015
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#5 | |
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Join Date: Oct 2004
Posts: 1,890
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Re: Diode Air Conditioning Clutch
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I've seen this TSB by FourSeasons regarding the diode you mention but the TSB references the RS part number for that diode part #. RS # 276-1103 is their number for the # you referenced. Does it mean squat? Don't know. http://www.4s.com/Upload/Four%20Seas...STALLATION.PDF The GM TSB regarding all diodes: http://www.corvetteactioncenter.com/...print-217.html Last edited by WVZR-1; 07-25-2015 at 12:38 AM. |
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07-25-2015
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#6 |
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Join Date: Aug 2009
Location: Livermore, Ca
Posts: 204
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Re: Diode Air Conditioning Clutch
Thanks for the info...
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1990 ZR-1 #642 |
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