Rebuilding of 34-PDSIT 2/3 Carbs

barefootwestie · Posted: Fri Mar 20, 2009 6:58 am Post subject: Rebuilding of 34-PDSIT 2/3 Carbs

I've started with putting my carbs back together after a good cleaning and ordering a new rebuild kit and have run into a question. As I am putting the electric choke back on, in what position should it be placed on the main body?

I have two different sets that I have looked at as well as online, and the brass wire terminal is always facing down, and I have found on 1 of the extra sets that there appears to be a line that is embossed on the lip of the choke possibly for positioning. Can anyone shed any light on this for me?

Thanks
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My Bus Restoration Blog
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1973 Westfalia
"Getting better....one repair at a time."

Other VW's owned through the years, in no particular order:
'67 Beetle,
'67 Ghia Hardtop,
'72 Ghia Convertible,
'72 Westfalia

busdaddy · Posted: Fri Mar 20, 2009 7:17 am Post subject:

Terminal position is irrelevant, you need to put the heater in place and twist it in the direction the choke plate closes until it just starts to close @ room temperature. Once they are installed you can fine tune the exact position.
Got a Bentley manual?
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barefootwestie · Posted: Fri Mar 20, 2009 7:20 am Post subject:

Great. Thanks.

Yep. Got a Bentley but didn't see that covered.
_________________
My Bus Restoration Blog
https://myvolkswagenbus.com/

1973 Westfalia
"Getting better....one repair at a time."

Other VW's owned through the years, in no particular order:
'67 Beetle,
'67 Ghia Hardtop,
'72 Ghia Convertible,
'72 Westfalia

barefootwestie · Posted: Tue Mar 24, 2009 6:24 am Post subject:

I have successfully rebuilt the first of the two duals. (Actually, I guess we should wait until I install to say if it is successful).

But anyhow, I'm tearing my second one down to start cleaning and I find that the accelerator pump injector is very loose and will spin freely, however, doesn't want to pull out easily.

I do have a spare carb and have torn it apart to find that the accelerator pump injector was being held in with aluminum foil wrapped around the base AND was actually pinched on the tip end.

1. The first injector is cracked at the base, the second one is pinched and doesn't fit securely, I do have a third in another PDST carb, but how can I remove it without damaging?
2. What should be used to securely fasten the injector into the base? I've used Loctite's Red Thread locker before but not for the internals of a carb.
3. What would be the purpose in pinching the tip of the injector?
_________________
My Bus Restoration Blog
https://myvolkswagenbus.com/

1973 Westfalia
"Getting better....one repair at a time."

Other VW's owned through the years, in no particular order:
'67 Beetle,
'67 Ghia Hardtop,
'72 Ghia Convertible,
'72 Westfalia

barefootwestie · Posted: Tue Mar 24, 2009 6:26 am Post subject:

RESPONSE FROM atmellovw :

I had the same issue. I used a very small punch and hammer on the collar/base of the tube and punched it back into place making sure the tube was pointing to where the throttle plate opens. Make sense?
_________________
My Bus Restoration Blog
https://myvolkswagenbus.com/

1973 Westfalia
"Getting better....one repair at a time."

Other VW's owned through the years, in no particular order:
'67 Beetle,
'67 Ghia Hardtop,
'72 Ghia Convertible,
'72 Westfalia

barefootwestie · Posted: Tue Mar 24, 2009 6:26 am Post subject:

RESPONSE FROM busdaddy:

The only excuse I can come up with for pinching is a hack to try and make it stay in (if we're all discussing the mounting end), they stay in very well with a little punching down as atmellow suggests, if you really want it in there good put a slice in the side of a small tube or disposable socket and drive it in using the flange.
They are easy to remove if you grip the base flange securely with pliers and twist, it's just a taper joint.
_________________
My Bus Restoration Blog
https://myvolkswagenbus.com/

1973 Westfalia
"Getting better....one repair at a time."

Other VW's owned through the years, in no particular order:
'67 Beetle,
'67 Ghia Hardtop,
'72 Ghia Convertible,
'72 Westfalia

barefootwestie · Posted: Tue Mar 24, 2009 6:31 am Post subject:

I'll try punching it in, but need to remove one of the good ones first. The injector appears to be 2 pieces - The brass base and then the small tube. If I grasp the tube it just spins within the brass base.

Also, in the main body of the carb, there appears to be an aluminum(?) plug right behind the injector base. I wonder if by drilling that out, that it would somehow give better access to removing the injector?

Oh, and BusDaddy, the tip they had pinched was actually the end that is pointing down into the carb. No idea why they would do that.
_________________
My Bus Restoration Blog
https://myvolkswagenbus.com/

1973 Westfalia
"Getting better....one repair at a time."

Other VW's owned through the years, in no particular order:
'67 Beetle,
'67 Ghia Hardtop,
'72 Ghia Convertible,
'72 Westfalia

atmellovw · Posted: Tue Mar 24, 2009 6:36 am Post subject:

These tubes are available from vendors if you need to go that route. I know Evwparts has them (both left and right).
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1972 Westy ("Bubbles") - Pastel White - 1700(1974 MT) - Dual Solex

barefootwestie · Posted: Tue Mar 24, 2009 7:28 am Post subject:

Great. Thanks for that info.
_________________
My Bus Restoration Blog
https://myvolkswagenbus.com/

1973 Westfalia
"Getting better....one repair at a time."

Other VW's owned through the years, in no particular order:
'67 Beetle,
'67 Ghia Hardtop,
'72 Ghia Convertible,
'72 Westfalia

keifernet · Posted: Tue Mar 24, 2009 7:44 am Post subject:

3. What would be the purpose in pinching the tip of the injector?

Barefoot... If somehow or purposely someone pinched the hole on the discharge end of the tube... Shocked

it was either by mistake/accident or stupidity! LOL

Busdaddy... are you talking about removing the tube in the top of the dual solex or ? They fit so flush I don't see how you could "They are easy to remove if you grip the base flange securely with pliers and twist, it's just a taper joint."

Certainly on the single Solex carb "faucet" style dump tubes... but the only thing to grab on the bus and type 3 dual is the brass pipe and it tends to bust off or twist loose leaving the taper and round head flush in the carb top.

busdaddy · Posted: Tue Mar 24, 2009 11:32 am Post subject:

I guess I've just been lucky then, most of the ones I've pulled were loose or sticking up.

How about freezing it out with Co2? heat the carb body and chill the tube only, work fast.
_________________
Rust NEVER sleeps and stock never goes out of style.

Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
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barefootwestie · Posted: Tue Mar 24, 2009 12:15 pm Post subject:

Yeah, I have some CO2 in my back pocket here.

Just kidding. I'm going to try and drill out the little aluminum hole cover behind it tonight to see if I can push it out somehow. Other than that, I may hafta order me two. I cant remember if I need the left or the right, but keifernet pointed me in the right direction for picking the right one up online. But really, I don;t know what difference it makes in the left and the right, because I thought they looked the same.
_________________
My Bus Restoration Blog
https://myvolkswagenbus.com/

1973 Westfalia
"Getting better....one repair at a time."

Other VW's owned through the years, in no particular order:
'67 Beetle,
'67 Ghia Hardtop,
'72 Ghia Convertible,
'72 Westfalia

busdaddy · Posted: Tue Mar 24, 2009 12:19 pm Post subject:

You can get the canned freeze stuff at computer stores IIRC.
_________________
Rust NEVER sleeps and stock never goes out of style.

Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!

Слава Україні!

barefootwestie · Posted: Tue Mar 24, 2009 12:56 pm Post subject:

It's worth a shot.
_________________
My Bus Restoration Blog
https://myvolkswagenbus.com/

1973 Westfalia
"Getting better....one repair at a time."

Other VW's owned through the years, in no particular order:
'67 Beetle,
'67 Ghia Hardtop,
'72 Ghia Convertible,
'72 Westfalia

atmellovw · Posted: Tue Mar 24, 2009 2:44 pm Post subject:

barefootwestie · Posted: Tue Mar 24, 2009 6:29 pm Post subject:

Well, drats. Just got home from work and picked up a can of NO2, had my torch ready to go only to see that the only remaining injector I have left is a lefty, not what I need. So, we'll be placing an order of the right and I think I may order a lefty, just in case they need to match.
_________________
My Bus Restoration Blog
https://myvolkswagenbus.com/

1973 Westfalia
"Getting better....one repair at a time."

Other VW's owned through the years, in no particular order:
'67 Beetle,
'67 Ghia Hardtop,
'72 Ghia Convertible,
'72 Westfalia

busdaddy · Posted: Tue Mar 24, 2009 6:34 pm Post subject:

Damn lefty's, it gotta be some alien conspiracy Cool

_________________
Rust NEVER sleeps and stock never goes out of style.

Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!

Слава Україні!


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