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<div>The motor is drawing too much current. If you clean it up and lubricant the bearings it will probable rectify the issue.
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<div>Yes it is a lot work. On the other hand, it only has to be done once every few decades. </div>
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<div>The fan does come in handy every once in awhile.</div>
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<div>Brion S</div>
<div>S Utah </div>
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-------- Original message --------<br>
From: William J <catnine09@dslextreme.com> <br>
Date: 12/8/16 5:22 PM (GMT-06:00) <br>
To: type3@vwtype3.org <br>
Subject: Re: [T3] Blower Motor <br>
<br>
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<div class="PlainText">The switch actually burnt . I can see the black contact and loose male plug
<br>
on the low speed . It melted.<br>
----- Original Message ----- <br>
From: "Jim Adney" <jadney@VWType3.org><br>
To: <type3@vwtype3.org><br>
Sent: Thursday, December 08, 2016 1:10 PM<br>
Subject: Re: [T3] Blower Motor<br>
<br>
<br>
> On 8 Dec 2016 at 12:34, William J wrote:<br>
><br>
>> Guess I was wrong. I looked at the Bentley and it shows what looks like a<br>
>> capacitor and something that may be a resistor both on the low speed <br>
>> circuit<br>
>> and only one winding.<br>
><br>
> Yes, that's a capacitor, which would have been for electrical noise<br>
> reduction, to reduce radio interference. I don't recall seeing that,<br>
> so I don't know where it is or even if it's really there.<br>
><br>
> Yes, that's the resistor, only in the '73 schematic. It's just in the<br>
> low speed circuit. The high speed circuit bypasses the resistor.<br>
> IIRC, the resistor is hard to get to. I THINK you have to pull off<br>
> the fan blade and it's under there. My impression is that it doesn't<br>
> get enough cooling, so that's why it dies. There's actually a VW part<br>
> number for that resistor and I actually have one, but I replaced mine<br>
> with an Ohmite brown devil, perhaps 1 Ohm. That lasted quite a few<br>
> years and then also failed. I've ignored it since then.<br>
><br>
> I don't know why the low speed contact on a switch would fail. Is it<br>
> possible that your resistor had failed, making your low speed no<br>
> longer functional (like mine.) If you had blamed that on the switch,<br>
> replacing the switch would have made no improvement.<br>
><br>
> In any case, the better repair is to swap in an earlier fan and box.<br>
> There were multiple changes done in '73, and each of them makes the<br>
> earlier boxes more reliable. Anyone who does this should pull it all<br>
> apart, clean it out and lubricate the fan motor bearings.<br>
><br>
><br>
> -- <br>
> *******************************<br>
> Jim Adney, jadney@vwtype3.org<br>
> Madison, Wisconsin, USA<br>
> *******************************<br>
><br>
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