Help IDing heater fan blower part

Hoping someone with electrical part experience can help me ID this part so I can replace it: It is the main bushing inside the heater fan blower (in the SC engine compartment). it seems to be made of pot metal (which is why it disintegrated) and has rounded edges to the point that it is almost spherical, so the motor shart can "float" and be angled across 360 degrees. It seems like a fairly common part for electric motors, but I need to know what to call it to try and find it and also some hints on where to look.

Also, if anyone has a part number for a 12-volt, delay-off timer relay, I am still having trouble finding one for the anti-hijack system.

Thanks,

Olivier

Try any small electric motor repair shop for parts like bushings, bearings, brushes, etc.

The 12v delay relay should be available at a well-stocked dealer (check the Yellow Pages) that sells electrical motor control parts. They will be available in off-delay and on-delay, so make sure you get what you need.


------------------
Doug
'81 SC Coupe (aka: "Blue Bomber")
Canada West Region PCA
members.home.net/zielke/911SC.htm

It's not a Porsche part - unfortunately, these are only available as a complete motor. I had the same problem, and adapted a used 914 motor ($15) to my 911. Tech article coming soon...

-Wayne

Had the same problem on the '90 I presently have and previous models owned. If you can find someone with a lathe who likes special projects you can machine a new bushing out of bronze or brass. I've been lucky in that my father fits that bill. He recently machined the bushing for my fan. He also turns 91 this month so it's just as much a treat for him to show the kid how to do it as it is for him to call upon skills rarely used.

There is a really good electric motor repair place in Tacoma, for all you locals wishing to find one. It turns out that the bushing is not available separately. I have had pretty good luck hogging out the old, spherical bushing and pressing in a standard bushing sleeve. I believe the shaft is a very standard 3/8" or something.

If you do this, just use patience and a rotary tool like Dremel, and use a bushing that is LONG. The spherical bushing is deep, and will accept a pretty long bushing, which of course will last longer.

Brushes are easy to find.

------------------
'83 SC

I found some similar bushings in a Grainger catalog, mounted in "pillow blocks" for other applications. They seem to be called self-aligning bushings. Not sure if I'll be able to find the right size I can take apart, though. I also considered replacing with a more common bushing or bearing. Super, I'm not sure I understood your idea, was it to Dremel down a long bushing (round off the edges).

Fred, if your Dad'd interested, I could send in the remains of this bushing (most of it is intact, although severely cracked) to duplicate. At this point, I would probably have better luck with such a long-distance fabrication than any local shops, who were pretty dismissive. I have to think these things are lying around in a lot of rebuilding shops, though. I wish I had more skills or at least knew more people with fabrication talent. Most of my friends take their cars in to the dealer to get the windows rolled down to the right height and the seats adjusted.

Olivier
82 SC

P.S. I've also been having a terrible time finding that delay-off relay. Most seem to be for AC current or so programmable that they cost close to $100 and could control the entire car remotely. Even the biggest supply houses can't seem to find a good part number for my application (wiring a delay-off timer relay into the rocker switch where my factory alarm key used to be to cut the fuel pump off after a preset delay as an anti-hijack measure) Not a huge priority and I take active steps to not end up in that situation, but I hate having switched not connected to anything (or holes in the sheet metal)

Well, the motor sounds like a precision instrument now. Thought I'd post the results in case anyone else was looking at the same repair. I ended up using a piece from a Heim (sp?) joint that was almost exactly the same size in all dimensions as the original self-aligning bearing. I had a machinist ream out the inside diameter by a tiny amount, but the fit in the housing was fine and the motor sounds great.

I still haven't been able to find the delay off relay, though.

Olivier
82 SC