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Vanapplebomb Samba Member
Joined: November 03, 2010 Posts: 5417 Location: Holland, MI
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Posted: Thu Dec 04, 2014 3:40 pm Post subject: |
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I got one of the arms replicated. To get the correct angle between the ball socket faces I cut a piece of cardboard to match the original linkage arm ball socket face with the opposite ball socket face facing down.
Then I threaded the ball sockets onto the new rods I made until they had a spacing of 105mm. Sine the M5 threads were cut on a 3/16in round bar stock, which is a little shy of 5mm, I didn't feel comfortable using thread locker so I used epoxy which is better at bridging gaps to secure the ball sockets to the threads. Then I used the piece of cardboard I cut to clock the faces of the ball sockets so they matched the originals.
Here is the final product. One down, one to go.
_________________ 1800 Type 4 Berrien 295
http://www.thesamba.com/vw/forum/viewtopic.php?t=487021 |
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Vanapplebomb Samba Member
Joined: November 03, 2010 Posts: 5417 Location: Holland, MI
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Posted: Sun Dec 14, 2014 8:08 pm Post subject: |
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Both linkage arms replicated.
Next step is to grind out the riveted ball studs on the cross bar and throttle shaft linkage plates, trim the threaded ends of the new ball studs, and spot weld them into place.
_________________ 1800 Type 4 Berrien 295
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1967250s Samba Member
Joined: May 02, 2007 Posts: 2137
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Posted: Mon Dec 15, 2014 12:57 am Post subject: |
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Hate to be a spoil, but you should have waited the glue those. You'll probably need to adjust the lengths, if I remember right. Do you have the Samba article that details the PDSIT carb adjust procedure? _________________ '72 Elm Green Deluxe |
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Vanapplebomb Samba Member
Joined: November 03, 2010 Posts: 5417 Location: Holland, MI
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Posted: Mon Dec 15, 2014 1:50 am Post subject: |
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This is a '72 only thread. All 1968-'72 dual carbed T4 engines had fixed linkage arms. In fact, the ball sockets were welded to the rods from the factory. The carb synchronizer was conveniently built right into the cross bar. Turning the left most nut in the following picture positions a spring loaded indexing plate relative to the rest of the cross bar. The drivers side linkage arm mounts to the indexing plate and the passenger side linkage arm mounts to the cross bar. Turn the nut in and the drivers side throttle plate is opened. Back off on the nut and the drivers side throttle plate is closed. It is that simple. Unfortunately the synchronizer was removed from the cross bar in '73 and later dual carbed T4 engines. From then on the passengers side linkage featured a L/R hand threaded rod and jam nut system. Most likely a cost savings feature.
_________________ 1800 Type 4 Berrien 295
http://www.thesamba.com/vw/forum/viewtopic.php?t=487021
Last edited by Vanapplebomb on Tue Dec 16, 2014 3:57 am; edited 1 time in total |
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Vanapplebomb Samba Member
Joined: November 03, 2010 Posts: 5417 Location: Holland, MI
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Posted: Mon Dec 15, 2014 8:59 pm Post subject: |
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Now that the linkage arms are made up, it is time to replace the ball studs. I started by pulling the crossbar linkage apart. I took off the passenger side arm and the drivers side synchronizer. Each comes off with one nut. Just back it off to relieve some of the compression on the crossbar. Use a soft ended hammer to knock the them off the crossbar.
The factory ball studs are riveted into place. To remove them, grind off the mushroomed over back side. Since the ball studs were riveted into place, they are pretty tight and may take some force to remove them.
Next I took a new ball stud and inserted the threaded portion through the existing hole. I put the nut on the back to hold the stud while I tacked it into place on the front side. Then I removed the nut on the back and welded the back on fully. The thread in portion sticks out a ways and can interfere with the mounting bracket, so I took a grinder and removed some of the material to avoid any clearance issues.
The drivers side carb synchronizer was taken apart to make it easier to work with. This is what all the pieces look like laid out.
With the synchronizer disassembled, I followed the same procedure for replacing the ball stud. The clearance on the back side of this piece is important to maintain. If the back side protrudes out to far, the synchronizer will be rendered useless, so be sure to grind the back side down far enough so that it doesn't interfere with any other part.
The completed linkage arms, and the crossbar ball studs replaced. Now all that is left are the ball studs on the throttle shaft stop/linkage plates.
_________________ 1800 Type 4 Berrien 295
http://www.thesamba.com/vw/forum/viewtopic.php?t=487021 |
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nezz Samba Member
Joined: January 13, 2006 Posts: 412 Location: Coimbra-Portugal
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Posted: Sun Jan 04, 2015 5:23 am Post subject: |
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Regal72Bay Samba Member
Joined: November 09, 2014 Posts: 6 Location: Atlanta
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Posted: Mon Jan 26, 2015 9:32 am Post subject: 72 Bay Window |
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chittychittybangbang Samba Member
Joined: August 12, 2006 Posts: 194 Location: portland, or
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Posted: Tue Jan 27, 2015 3:43 pm Post subject: |
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Rest in pieces...
_________________ If your into busses youve got issues and you likely don´t know it yet. - El_Güero
The question of whether the resulting usage is "correct" or "incorrect" depends on one's notion of correctness. |
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nezz Samba Member
Joined: January 13, 2006 Posts: 412 Location: Coimbra-Portugal
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Posted: Sat Apr 11, 2015 8:00 am Post subject: |
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bwaz Samba Member
Joined: August 24, 2004 Posts: 1780
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Posted: Sun Aug 02, 2015 9:17 pm Post subject: |
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My 72 westy, now mostly roadworthy! Nose straigtening to come over the winter |
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ksumshu Samba Member
Joined: April 20, 2014 Posts: 7 Location: South Carolina
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Posted: Mon Aug 03, 2015 2:42 pm Post subject: |
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My first bus! I was hesitant at first to buy a one year only, but let's be real, I have no regrets.
As we bought it.
Great interior minus the 3 layers of old flooring.
After first pressure washing, pop top looked a whole lot better without barnacles!
Painted bumper and lights working good! |
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72camper Samba Member
Joined: January 25, 2015 Posts: 256
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Posted: Mon Aug 03, 2015 4:11 pm Post subject: |
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Here is my '72...
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nezz Samba Member
Joined: January 13, 2006 Posts: 412 Location: Coimbra-Portugal
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Posted: Mon Oct 12, 2015 2:56 pm Post subject: |
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Kick Kombi Samba Member
Joined: July 09, 2008 Posts: 184 Location: Central Coast, NSW, Australia
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nezz Samba Member
Joined: January 13, 2006 Posts: 412 Location: Coimbra-Portugal
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Posted: Sun Feb 28, 2016 8:54 am Post subject: Re: The '72 only photos thread |
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nezz Samba Member
Joined: January 13, 2006 Posts: 412 Location: Coimbra-Portugal
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Posted: Wed Mar 16, 2016 8:51 am Post subject: Re: The '72 only photos thread |
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Schwing Samba Member
Joined: May 10, 2009 Posts: 2506 Location: Centreville, MD
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1967250s Samba Member
Joined: May 02, 2007 Posts: 2137
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Posted: Sat Nov 19, 2016 2:43 pm Post subject: Re: The '72 only photos thread |
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Ha! Love the plate. Never broke a piston, tho dropped at least 3 valves, seized 2 mains, mushroomed 1 cam follower, and spun 2 rod bearings :0 All at different times, too 😬
Bus looks great. Be sure to waxoil everything! _________________ '72 Elm Green Deluxe |
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squaredlv Samba Member
Joined: July 25, 2007 Posts: 12 Location: las vegas, nv
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Posted: Wed Nov 23, 2016 10:54 pm Post subject: Re: The '72 only photos thread |
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Here's my 72!! She's missing a light on the rack at the moment but I love her! _________________ 63 ghia rhd.. under construction
69 Class 11 Bug
72 Baywindow Bus |
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72camper Samba Member
Joined: January 25, 2015 Posts: 256
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