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phil60 Samba Member
Joined: May 24, 2025 Posts: 40 Location: Sussex UK
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Posted: Thu Jul 24, 2025 7:25 am Post subject: 1959 Beetle removing dynamo |
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Hi - could anyone help me please with some idiot proof, step by step instructions on how to remove the dynamo from my car. Many thanks.
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Bub Samba Member

Joined: June 10, 2004 Posts: 1335 Location: Central Washington
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Posted: Thu Jul 24, 2025 9:28 am Post subject: Re: 1959 Beetle removing dynamo |
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*Disconnect BATTERY FIRST!*
1. Remove Carburetor
2. Put 36mm socket for fan nut on a breaker bar, and reach behind and place it on the fan nut inside the shroud- wedge the bar so that the fan will not spin CCW. So, wedge the bar towards the LEFT (3/4) side.
3. Remove generator pulley outer half, use inner half to turn generator CCW FIRMLY in order to loosen the fan nut, then remove breaker bar, reach back and grab the fan nut and washers that come off with it. Fan should now be 'loose' in the shroud.
4. Remove the 4 screws from backing plate/shroud, and the generator strap and wires.
Now you can begin to wiggle the generator out- tilt the pulley end down and sometimes you can remove it with the fan still attached. If not, you can wiggle the fan and remove it as you remove the generator, leaving it sitting in the shroud.
This method has never failed me in 40 years, 1000+ generator swaps. Sometimes its very slick and easy, sometimes it can be a hassle. But please don't go crazy pull the engine lid off to tear the engine apart while installed.
If it is just too much, as for some help or remove the engine.
After you get the hang of this procedure it's literally a 15 minute job, I just did it yesterday. _________________
| hitest wrote: |
| Had a girlfriend once who shall we say, nearly arrived at the mere sight of a semaphore in action- easy to please she was... |
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Eric&Barb Samba Member

Joined: September 19, 2004 Posts: 26291 Location: Olympia Wash Rinse & Repeat
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Posted: Thu Jul 24, 2025 10:54 am Post subject: Re: 1959 Beetle removing dynamo |
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| Bub wrote: |
This method has never failed me in 40 years, 1000+ generator swaps. Sometimes its very slick and easy, sometimes it can be a hassle. But please don't go crazy pull the engine lid off to tear the engine apart while installed.
If it is just too much, as for some help or remove the engine.
After you get the hang of this procedure it's literally a 15 minute job, I just did it yesterday. |
OP might need to know how to remove the thermostat throttle ring also.... _________________ In Stereo, Where Available! |
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Bub Samba Member

Joined: June 10, 2004 Posts: 1335 Location: Central Washington
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Posted: Thu Jul 24, 2025 3:34 pm Post subject: Re: 1959 Beetle removing dynamo |
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| Eric&Barb wrote: |
| Bub wrote: |
This method has never failed me in 40 years, 1000+ generator swaps. Sometimes its very slick and easy, sometimes it can be a hassle. But please don't go crazy pull the engine lid off to tear the engine apart while installed.
If it is just too much, as for some help or remove the engine.
After you get the hang of this procedure it's literally a 15 minute job, I just did it yesterday. |
OP might need to know how to remove the thermostat throttle ring also.... |
Yes! that actually wouldn't hurt! Though, I don't think it's absolutely necessary? But yes- its an obstacle in the middle of all of it. It could be tilted forward or removed in just an extra minute.
For removal I'd probably leave the bracket and just remove the ring via the bolts at the bottom. _________________
| hitest wrote: |
| Had a girlfriend once who shall we say, nearly arrived at the mere sight of a semaphore in action- easy to please she was... |
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my59 Samba Member

Joined: August 13, 2003 Posts: 4014 Location: connecting the dots
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Posted: Thu Jul 24, 2025 3:35 pm Post subject: Re: 1959 Beetle removing dynamo |
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Step 1a, stuff a clean rag in the intake after removing carburetor.
There is a gasket between the generator and the generator stand. You may need a replacement. Mine is missing, which is why this is also a place for a clean rag to be stuffed while generator is off. _________________ my59: Well son, my grandfather died before I got to drive it, so does that answer your question?
our79: sunroof bus w/camper interior and 2.0 FI
Other:'12 Jetta, '77 Benz 300D, and a 74 MG Midget. |
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phil60 Samba Member
Joined: May 24, 2025 Posts: 40 Location: Sussex UK
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Posted: Fri Jul 25, 2025 4:19 am Post subject: Re: 1959 Beetle removing dynamo |
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| Hi - many thanks for the suggestions. Much appreciated. Being an absolute amateur with Beetles I'm not sure if I have the confidence to tackle this - it sounds reasonable enough but also sounds as though a lot could go wrong. For instance I have no idea what a thermostat throttle ring is! Also the car does not have a removable generator stand which I assume would make the job harder. I'll have to find someone who knows what they are doing. |
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Eric&Barb Samba Member

Joined: September 19, 2004 Posts: 26291 Location: Olympia Wash Rinse & Repeat
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Posted: Fri Jul 25, 2025 7:23 am Post subject: Re: 1959 Beetle removing dynamo |
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If you have a garage or at least a quiet place you can put up a tarp on your property, then you should consider pulling the engine yourself if you are in decent physical shape. For a beginner it sounds like a challenging job to pull the engine, but it really is not, and a must to get the experience sometime anyway. That way you can fix the engine/clutch without having to get your VW towed into a garage to some suspect mechanic who probably knows less about your VW than you.
Personally would never suggest a newbie to take the generator out with the engine in situ. Too easy to get things out of place when putting back. Better to do this job with engine out a time or two.
The below manual is a must to have. Pricey at first glance, but it is three or four times the manual (with over a thousand pages) compared to any other out there, plus was once only available to VW employees. If you wish to, shop around and you can find it for less or find it in good used shape in the classifieds if you search daily.
https://www.wolfsburgwest.com/cart/DetailsList.cfm?ID=book1b _________________ In Stereo, Where Available! |
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Cusser Samba Member

Joined: October 02, 2006 Posts: 33478 Location: Hot Arizona
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Posted: Fri Jul 25, 2025 7:49 am Post subject: Re: 1959 Beetle removing dynamo |
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| Eric&Barb wrote: |
| If you have a garage or at least a quiet place you can put up a tarp on your property, then you should consider pulling the engine yourself if you are in decent physical shape. For a beginner it sounds like a challenging job to pull the engine, but it really is not, and a must to get the experience sometime anyway. That way you can fix the engine/clutch without having to get your VW towed into a garage to some suspect mechanic who probably knows less about your VW than you. |
Absolutely agree. Another reason is that few mechanic shops have experience with old VWs these days.
| Eric&Barb wrote: |
| Personally would never suggest a newbie to take the generator out with the engine in situ. Too easy to get things out of place when putting back. Better to do this job with engine out a time or two. |
Agree here as well. Once one has removed a generator on a removed engine, then that experience would help with doing such task with engine in the VW.
On my own 1970 and 1971 VWs, I have removed the fan shroud/generator assembly with engine in place after taking off the engine lid. _________________ 1970 VW (owned since 1972) and 1971 VW Convertible (owned since 1976), second owner of each. The '71 now has the 1835 engine, swapped from the '70. Second owner of each. 1988 Mazda B2200 truck, 1998 Frontier, 2014 Yukon, 2004 Frontier King Cab. All manual transmission except for the Yukon. http://www.thesamba.com/vw/forum/album_page.php?pic_id=335294 http://www.thesamba.com/vw/forum/album_page.php?pic_id=335297 |
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Eric&Barb Samba Member

Joined: September 19, 2004 Posts: 26291 Location: Olympia Wash Rinse & Repeat
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Posted: Fri Jul 25, 2025 8:03 am Post subject: Re: 1959 Beetle removing dynamo |
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| phil60 wrote: |
| For instance I have no idea what a thermostat throttle ring is! |
Here you go:
https://www.thesamba.com/vw/forum/search.php?searc...=titleonly
Those resulting threads found with the search engine for the forum (at top left of that screen) with the words "Throttle Ring" and the "Titles Only" box check marked to keep results down to ones with those words in the title. Without that box checked you can get pages of results of threads where those words were just mentioned anywhere in those threads. _________________ In Stereo, Where Available! |
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phil60 Samba Member
Joined: May 24, 2025 Posts: 40 Location: Sussex UK
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Posted: Fri Jul 25, 2025 8:54 am Post subject: Re: 1959 Beetle removing dynamo |
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| Damn! I'd almost decided to give it a try. |
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my59 Samba Member

Joined: August 13, 2003 Posts: 4014 Location: connecting the dots
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Posted: Fri Jul 25, 2025 1:14 pm Post subject: Re: 1959 Beetle removing dynamo |
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I replaced the generator in the driveway years ago, and it was very achievable with basic tools. Spent some time finessing it out, and removed the deck lid after it closed on my head a few times when my arm knocked the stick prop out of the way. Yeah, that pissed me off. Yeah it took all day. Yeah, having to remove and reinstall the carb is a PITA
There is nothing inherently difficult about doing it, if you take your time and have patience and an orderly work flow.
Yeah, I learned a lot about the parts you cant see easily.
Reason was, generator stopped working. Close inspection of winding showed a small length of copper wire was missing.
Used generator was installed.
The oil change a few weeks later coughed up the missing bit of copper wire. _________________ my59: Well son, my grandfather died before I got to drive it, so does that answer your question?
our79: sunroof bus w/camper interior and 2.0 FI
Other:'12 Jetta, '77 Benz 300D, and a 74 MG Midget. |
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EVfun  Samba Member

Joined: April 01, 2012 Posts: 6370 Location: Seattle
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Posted: Fri Jul 25, 2025 2:01 pm Post subject: Re: 1959 Beetle removing dynamo |
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| phil60 wrote: |
| Damn! I'd almost decided to give it a try. |
Reach around the back of the fan shroud (with the engine off, of course) and feel if you have a fan ring — there is a good chance that system was removed by a previous owner, so not an issue.
I did this decades ago (damn, ‘bout 40 years ago) on my first car, a 36 horse Bug with 36 horse engine. I thought I loosed the backing plate screws a little, unclamped the generator, then lifted the fan shroud up a little supporting each end on a couple squares of 2x4 scrap. If I remember correctly, with that I was able to remove the backing plate screws and pull and tip to get the fan out and over the intake manifold. In my case the generator needed replacing. _________________
| Wildthings wrote: |
| As a general rule, cheap parts are the most expensive parts you can buy. |
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phil60 Samba Member
Joined: May 24, 2025 Posts: 40 Location: Sussex UK
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Posted: Thu Aug 07, 2025 7:18 am Post subject: Re: 1959 Beetle removing dynamo |
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OK - I did decide to try removing the generator and to my surprise it was not too difficult. The only problem I had was that I could not lift the fan housing up more than about half an inch - it just seemed to get stuck on something, but didn't stop me getting the dynamo out. My question now is about the air control ring which is held in place by 2 bolts that slide down into a bracket. As I understand it this moves back as the engine gets hot letting more air through. I have read somewhere (and the last post also mentions it) that this is often removed. So what do you think - leave or remove?
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Eric&Barb Samba Member

Joined: September 19, 2004 Posts: 26291 Location: Olympia Wash Rinse & Repeat
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Posted: Thu Aug 07, 2025 7:47 am Post subject: Re: 1959 Beetle removing dynamo |
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| phil60 wrote: |
So what do you think - leave or remove?
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Well, that throttle ring is why you could not raise the fan shroud much. That moves FORWARD as in closer to the front bumper to let in more cooling air.
Permanently or temporarily?? _________________ In Stereo, Where Available! |
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phil60 Samba Member
Joined: May 24, 2025 Posts: 40 Location: Sussex UK
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Posted: Thu Aug 07, 2025 7:55 am Post subject: Re: 1959 Beetle removing dynamo |
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| You're right - FORWARD! No it was unhooked when I was trying to lift the fan housing |
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EVfun  Samba Member

Joined: April 01, 2012 Posts: 6370 Location: Seattle
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Posted: Thu Aug 07, 2025 10:38 am Post subject: Re: 1959 Beetle removing dynamo |
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| phil60 wrote: |
| You're right - FORWARD! No it was unhooked when I was trying to lift the fan housing |
Did you leave the throttle cable tube or the choke cable in place when trying to lift the fan shroud? I think I got away with the choke cable in place but disconnected but I'm pretty sure the throttle cable tube had to be removed. That metal throttle cable tube also goes through the engine firewall tin.
If you have a working thermostat system I wouldn't remove it! If the thermostat is missing I would remove the ran ring but leave the rest of the linkage system intact until you can replace the thermostat and restore the system. _________________
| Wildthings wrote: |
| As a general rule, cheap parts are the most expensive parts you can buy. |
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Eric&Barb Samba Member

Joined: September 19, 2004 Posts: 26291 Location: Olympia Wash Rinse & Repeat
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Posted: Thu Aug 07, 2025 12:13 pm Post subject: Re: 1959 Beetle removing dynamo |
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| phil60 wrote: |
So what do you think - leave or remove?
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Permanently or temporarily?? _________________ In Stereo, Where Available! |
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phil60 Samba Member
Joined: May 24, 2025 Posts: 40 Location: Sussex UK
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Posted: Thu Aug 07, 2025 1:59 pm Post subject: Re: 1959 Beetle removing dynamo |
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I left the throttle cable tube in place as I didn't know how to remove it.
I was thinking permanently? Not a good idea? |
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Eric&Barb Samba Member

Joined: September 19, 2004 Posts: 26291 Location: Olympia Wash Rinse & Repeat
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Posted: Thu Aug 07, 2025 3:05 pm Post subject: Re: 1959 Beetle removing dynamo |
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| phil60 wrote: |
| I was thinking permanently? Not a good idea? |
Not a good idea.
The below we posted a few years ago, but is still relevant about the thermostat system:
Piston rings do not 100% seal the head chamber, cylinder and piston top from the engine inner case and oil sump. When any internal combustion engine that uses piston rings is not up to proper operating temp the rings seal even worse. The reason why an ACVW engine is more (clattery/tapping) noisy when first started up and quiets way down about ten minutes later is because the aluminum pistons need to swell up till they properly fit inside the cast iron cylinders. Aluminum swells up faster and more than cast iron does, so the designers of these parts had to compromise in this way. Cold pistons not fitting properly in the cylinders literally ever so slightly flop inside the cylinders, not good for ring sealing when this is going on. Which is also why the thermostat with flaps or the early throttle ring is so important for engine longevity for any ACVW engine using a carburator. Additionally gasoline is very non-lubricating, so too much fuel will both wash away the oil that should be lubricating and sealing the piston rings to the cylinders, and cause the rings cylinder surfaces to wear, thusly seal again even worse.
On top of the above, back when I was much younger and dumber, I ran my ACVW engines without thermostat system. This resulted in too much fuel getting into the engine oil and that caused the oil to turn acidic even with regular 3,000 mile oil changes and daily driving. This showed up most visually with the oil strainer in the sump getting very pitted up. Once I installed thermostats the used sump oil stopped smelling of fuel at each oil change and sump strainer stayed looking like new over many tens of thousands of miles. Once an ACVW engine reaches a minimum of 160F oil temp the fuel and water from burning fuel that gets past the piston rings can be turned to vapor again to get it out of the engine. _________________ In Stereo, Where Available! |
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phil60 Samba Member
Joined: May 24, 2025 Posts: 40 Location: Sussex UK
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Posted: Fri Aug 08, 2025 1:29 am Post subject: Re: 1959 Beetle removing dynamo |
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| OK - many thanks for the info |
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