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  #1 (permalink)  
Old 02-14-2019, 08:47 AM
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Default HELP! I need a rectifier (Diode) plate for my alternator

I need to replace the faulty rectifier plate on my C3SF-10300A alternator.
Can any one provide me an address I can find such one?
MANY THANKS

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Last edited by ALF; 02-14-2019 at 02:14 PM..
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Old 02-14-2019, 11:38 AM
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I believe the part numbers you are looking for are c4az-10373-a and c4az-10377-a. I bought mine from ebay. Looks like there are some available there now actually.
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Old 02-14-2019, 11:39 AM
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Alf,

Here's another possibility: Alternators

Tom
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Old 02-14-2019, 11:57 AM
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If you know which diode(s) are bad, they can be replaced. If there is an old starter alternator repair shop around you they will probably have diodes. I replaced a single diode in our black car's alternator decades ago.
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Old 02-14-2019, 11:59 AM
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Quote:
Originally Posted by Tom Wells View Post
Alf,

Here's another possibility: Alternators

Tom
Those are "2G" units and different from what Alf has.
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Old 02-14-2019, 01:58 PM
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N to + are defect
I was today on a shop specialized on old cars electric.
He mentioned to me they can not be replaced one by one...

If yes it would be great. If not I‘ll search for the complet part.
The only option I‘ve at the moment is a new alternator for many $ as there are no spare parts abailable.
;(

If the numbers on the post from Andrew are correct I‘ll search for them.
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Old 02-14-2019, 02:29 PM
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Quote:
Originally Posted by ALF View Post
N to + are defect
I was today on a shop specialized on old cars electric.
He mentioned to me they can not be replaced one by one...

If yes it would be great. If not Ill search for the complet part.
The only option Ive at the moment is a new alternator for many $ as there are no spare parts abailable.
;(

If the numbers on the post from Andrew are correct Ill search for them.
Let me look in the bin, I may have a good used plate.
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Old 02-14-2019, 02:40 PM
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Quote:
Originally Posted by Mark IV View Post
Let me look in the bin, I may have a good used plate.
Many thanks
I cross my fingers!!
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Old 02-14-2019, 02:57 PM
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The plates listed Feb 2, 1964 printing had C3SZ prefixes for + and - plates. The Aug 1, 1966 printing shows the C4AZ prefix numbers as service parts.

The C4AZ models are not all that uncommon on ebay.

Diodes are not hard to replace but the 1964 Ford manuals is great to show and tell how.
ALF and CompClassics like this.
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Old 02-14-2019, 06:57 PM
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A little advise, be very careful with those brushes when you reassemble the alternator. They break easily if you don't retract them during assembly. Ask me how I know this!
Larry
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Old 02-14-2019, 07:09 PM
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Quote:
Originally Posted by Mark IV View Post
Those are "2G" units and different from what Alf has.
Ford didn't start using 2G alternators until 1982. Those at the link appear to be variants of 1G alternators.
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Old 02-14-2019, 10:30 PM
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Quote:
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Diodes are not hard to replace but the 1964 Ford manuals is great to show and tell how.
My Manual is somewhere between Los Angeles and Switzerland

For me the challenge will be to get the correct parts from the states as here in Switzerland they know about Porsche and VW and if youre lucky Ford Mustangs.
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Old 02-15-2019, 01:26 AM
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Quote:
Originally Posted by cycleguy55 View Post
Ford didn't start using 2G alternators until 1982. Those at the link appear to be variants of 1G alternators.
You are correct, I mis-typed. However the new AMK units are really a "1G MK II" alternator as most parts will not interchange with the 63/64 round case, plug in type unit.

I do have new brushes for the early 1G if needed.
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Old 02-15-2019, 01:59 AM
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Quote:
Originally Posted by Mark IV View Post
Let me look in the bin, I may have a good used plate.
Hi Mark
I assume, as you mentioned the brushes, you did not find some diode plates in the bin?
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Old 02-15-2019, 03:34 AM
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Quote:
Originally Posted by Mark IV View Post
I do have new brushes for the early 1G if needed.
Are the brushes C3SZ10347B?
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Old 02-15-2019, 04:09 AM
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Quote:
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Are the brushes C3SZ10347B?
Yes, those are the brushes I have. And I do have some used diode plates but I will need to have them checked at the alternator shop. You already have a bad one, you don't need to pay to ship another bad one!
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Old 02-15-2019, 04:18 AM
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Quote:
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Yes, those are the brushes I have. And I do have some used diode plates but I will need to have them checked at the alternator shop. You already have a bad one, you don't need to pay to ship another bad one!
Great!!
PM sent
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Old 02-15-2019, 09:37 AM
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On ebay both got sold...
But i hope on them from Mark IV
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Last edited by ALF; 02-15-2019 at 09:39 AM..
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Old 02-15-2019, 01:16 PM
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When reassembling the back case do not forget the two mounting spacers that go on the mounting studs prior to assembly. Also there is a hole on the rear portion of the case to slip a pin into to hold the brushes away from the armature, pull the pin out after reassembly.
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Old 02-15-2019, 01:22 PM
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Thank you John
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