Skip to main content

So I don't know if this is normal but has anyone ever had a fan split like this? Can I pick one up at a local auto part store or should I have Carey send me one. I will say it scared the sh*@ out of me, at first I though it was a backfire until I saw the red light pop on and decided to coast down my street. Got is safely in the garage opened the engine boot and let's just say it was hot. 

IMG_1559

IMG_1560

IMG_1561

Joe Fortino 

 

-2016 Beck Suby Speedster - Batavia, IL

Attachments

Images (3)
  • IMG_1560
  • IMG_1561
  • IMG_1559
Original Post

Replies sorted oldest to newest

Replacing a belt (and back half of the pulley) is something every type 1 powered  Speedster owner has to know how to do; what happens if you shred a belt in the middle of nowhere? You can't limp back to the nearest gas station- it's probably self-serve and the 16 yr. old kid behind the counter won't know what to do, and you'll cook the engine in the process. All it takes is a flat blade screwdriver and a wrench. Make sure you get the tightness on the belt right (1/2" deflection with your thumb) and the spare shims go on the outside of the pulley under the cap and nut.

 

I've heard of those inner pieces breaking before- I think I've seen a pic or 2 on the Samba. As Stan said- "parts made with pride in the PRC".

 

Always keep a belt (and the tools to install it) in the car, and a spare inner pulley half wouldn't be a bad idea, either. And before re-using that belt, give it a really good look over, and if it isn't pristine, chuck it. If you don't, another belt replacement in your near future Yoda predicts...

 

PS- I don't think it has anything to do with your engine's power; read again Stan's little dig- "parts made with pride in the People's Republic of China".

Last edited by ALB
Originally Posted by Joe Fortino -2008 Beck - Geneva, IL:
...Al I like the way you think, going to pick up two of everything.

I drove beetles until I was almost 30 (early 1974- late '85?) and even when these cars were the most common automobile all over the planet, a shredded belt could strand you if you didn't carry a spare and have the ability and tools to do a roadside repair. You CAN'T nurse an aircooled car with no belt home for more than a few blocks and expect to not overheat it. I also changed clutch and accelerator cables on the side of the highway over the years- 2 other things have in the car you should....

 

Carl- No paranoia, just carry spares and know that you can do it should the situation arise. If you need to, do a trial run at home to give you piece of mind, so be it. And buy an extra wrench and screwdriver to live in the car along with the belt (and the inner pulley half isn't a bad idea either). 

 

EDIT- Even if someone else does your oil and spark plug changes, you need to know how to change a fan belt and have a spare (and the tools) in your car at all times. Even a nice afternoon or evening drive with your lady will turn into a disaster if the engine shreds or throws a belt if you aren't prepared to deal with it. You can't drive these engine any distance with no cooling system (which the fan belt is an integral part of) and not expect overheating damage; these things get way too hot really fast with no air carrying away the heat.

 

I know I'm repeating myself, but it's that important- carry a belt and tools in the car wherever you go, and know what to do if the situation arises. Practice in the garage a couple of times if need be; it will give you peace of mind. If you know what you're doing, instead of it being a big issue on the side of the road it's a 5 minute inconvenience and then you're back to roaring it up!

Last edited by ALB
The alternator pulley just needs to be for an air cooled vw motor. Should be the same across the board, so long as it matches the alternator.

It's a 5 minute job to change that pulley/belt. Count the little shims between the pulley halves. Try to reinstall with the same number of shims. Check your belt tension after you are done. Super simple to do.

Best,
Ted

Joe-

 

Ted beat me to it. It doesn't matter. Anything will fit.

 

The pulley halves with the built-in fan always looked pretty dangerous to me. I understand the idea, but I was never wild about sticking my nose anywhere near those spinning blades of doom.

 

I've also never had very good luck with the Chinese alternator (or generator... they're all the same) pulleys-- they often have quite a bit of run-out (wobble). I've got a $50 domestically made pulley with no built-in fan on the 2110.

 

As an aside: I've run just about every combination of pulley set up there is. Stock diameter crank pulley/stock diameter alternator, power-pulley/stock alternator, power-pulley/356 alternator, stock crank/356 alternator, etc. My 2276 set-up is a BMD serpentine set-up for dry sump, with a tiny crank/tiny alternator pulley that replicates the stock VW ratio.

 

Stock works really well. Personally, I wouldn't buy one with a cooling fan attached, nor one from Asia (unless it was free)- but I believe in overkill in all things mechanical. Of course, I'm pretty sure this is why I don't throw fan belts, etc. either.

 

Forewarned is forearmed. Your mileage may vary.

Last edited by Stan Galat

Joe- What Ted and Stan said. Don't get the chrome unit; the belt starts slipping at even less rpm than normal. No angst- it's really easy. Pull the hub to the old inner pulley off, slide the new one on (it should go on fairly easily when the slot is lined up with the woodruff key on the shaft), stick on a bunch of shims (Ted's suggestion of using the same number of shims that were on before works), slide the outer half on (make sure the locating prongs go through the matching slots on the inner side), put the rest of the shims under the cap/nut, tighten it up, check the belt deflection, adjust if necessary. Again- once you've done it, you'll wonder what all the fuss was about. Oh, the screwdriver goes through the slot in the inner part to hold it still so you can get the nut done up. Guys, have I forgotten anything?

 

PS- A chrome pulley could always be sanded with a little fine paper on the side contact surfaces for a little better grip.

Last edited by ALB

If you want the "fan" on the rear of the pulley, CB Perf sells a Brazilian unit that is quite strong....    

 

I lost a standard pulley because I did not triple check it....   The pulley loosened up, ate the key, keyway, front supports, and wobbled out the I.D.  ......   (Thanks to Musbjim and friends for helping me keep my sanity, as this was discovered after a 750mi. trip to Carlisle.)

 

I now do the initial install, rotate the engine 2-3 times, check belt tension and re torque, crank the engine and give it a 5-10 min run... Then check again...

 

Ted:

 

go here:  https://www.bugcity.com/shop/shop.htm?pquery=pulley

 

And get one of these:   043903109G

 

Yes, it's $70 bucks.  

 

It's new old stock GERMAN and will be the last fan pulley you'll ever buy.

 

You definitely DO NOT need those Chevy-style fan blades on the back half - they don't really help much and are, in my and Stan's opinion, needlessly dangerous.

Hey Joe, 

Can you get a set of vice grips on the inside / center of that shaft? Clamp the vice grips on what's left in there and then a crescent wrench on that net.  Maybe give that a shot?

Let's not worry about the grinding until we get everything apart first. Some of what's left of that pulley could be grinding on the alternator.

I was wondering what the inside of the deck lid looked like. I'm amazed at the outcome!

We will get her back on the road in no time.

Ted

The pulley nut should be fairly easy to remove as the pressure on the pulley halves and shim packs has been lessened....    If it is indeed extremely tight, then the pulley may have been improperly shimmed....

 

Grabbing the shaft with vise grips should be a last resort as a burred up shaft will be slightly under sized and probably out of round when the burrs are cleaned up.....  If available, try an electric or pneumatic impact wrench....

Last edited by LeonChupp

Personally I don't use vice-grips on anything I want to reuse and remain in good condition. If you must use vice-grips, wrap the shaft with a rag first. Tom B can call it a condom if he wants...LOL!

 

Wear some heavy leather gloves and grab the fan from the back side and then impact the nut off. Should blast right off in a few seconds like others have said.

Ah, I'm sorry. I think I assumed the center of the pulley shaft was  still covering the alternator shaft and that's what I would grab with the vice grips. I looked at the old pulley shrapnel  and it looked like only the rear outer sheave exploded, and that it left the rest of the bits still on the alternator shaft. Because the way it exploded, I assume it still has the same tension or pressure on the nut, as before the pulley failed. I could be wrong, but that's what I assumed from the photo of the fragments.

Keep us posted!

Ted

Ted
Post Content
×
×
×
×
Link copied to your clipboard.
×
×