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Old 07-03-2009, 05:14 PM   #21
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Ladue Lifter Redux

I hope this helps someone as I've had a heck of a time figuring these things out. Here is a picture I just took when I finally managed to get one of my lifters completely disassembled. Wish me luck putting it back together. By the way, I have to thank Rob Baker for posting a similar picture on his blog that helped me understand how these things work.
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Old 07-05-2009, 08:56 PM   #22
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1964 26' Overlander
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LaDeau Lifters

I have finally referenced the correct spelling for the lifter off of the aluminum handle at the bottom. It states manufacturing site is Louisiana, must be Cajun. I finally removed the rivets off of the lifters after much difficulty. There appears to be significant corrision internally as well as the outer hinge. The square part at the bottom of the lifter where the aluminum handle attaches, how does it attach to the spiral tube, through a pin or by direct attachment? CLR is not recommended on aluminum according to the rear label on the package I just checked. Is Kroil available locally through national chains or directly by mail only? How long does it take for it to impact on significant corrision problems?
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Old 07-05-2009, 08:59 PM   #23
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LaDeau Lifters

Here is a picture of the lifters without the rivets.
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Old 07-05-2009, 09:00 PM   #24
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LaDeau Lifters

How do you remove the top hinge from the cylinder assembly?
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Old 07-05-2009, 10:25 PM   #25
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64 - the top hinge came off of my lifter assembly voluntarily (i.e. I was not trying to remove that part). If it is not loose, I would leave it alone. They are simply pressed onto the top of the inner cylinder of the lifter assembly and hammered into place. It is a weak point in the assembly and three of the six lifters I'm working on came apart.

As far as the square part at the bottom (where the handle attaches), it is attached to the cap that is pressed onto the bottom of the tube. When the spiral cylinder comes out of the tube, the square part is still attached to the tube. I think you might be able to take the bottom cap off also with the right tools (but I haven't figured that part out yet).

Have you been able to move the cylinder out of the tube at all? Mine were pretty well stuck. I had already tried several weeks soaking in WD 40, PB Blaster and Corrosion X (all at different times), so I resorted to force. I slipped a screw driver into a the spiral slot that was still visible above the top of the tube and pried against the tube (not an ideal method). It predictably damaged the tube a bit, but I was able to file it down and they now operate smoothly.
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Old 07-05-2009, 10:41 PM   #26
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Quote:
Originally Posted by 64Overlander View Post
How do you remove the top hinge from the cylinder assembly?
DON'T!! Leave it on and be thankful the top hinge is still attached to your riser (the small diameter cylinder). Drill out the rivets on the hinge that hold the small scrap of aluminum to the hinge and clean up the hinge in place so it will be ready to attach to the new vent cover. If the hinge is detached from the riser, then the lifter is broken and very difficult to repair. I don't know how the hinge could be reattached to the riser.

You can remove the cylinder from the bracket by gently prying the bottom of the bracket away from the cylinder one side at a time. The bracket holds the bottom of the cylinder in place solely by pressure. The top of the cylinder is loose inside the bracket semi-circle. If you pull the top of the cylinder away from the bracket, it should come out and pivot down and around the bottom of the bracket.
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Old 07-05-2009, 10:56 PM   #27
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Lightbulb

Quote:
Originally Posted by 64Overlander View Post
. . . The square part at the bottom of the lifter where the aluminum handle attaches, how does it attach to the spiral tube, through a pin or by direct attachment? . . . Is Kroil available locally through national chains or directly by mail only? How long does it take for it to impact on significant corrision problems?
The round cap at the bottom of the lifter is attached to the square drive for the handle; they turn as one. The round tube is held into the small cap by pressure; its a pressure fit. The handle, small cap and round tube all revolve together as one unit.

The two piece spiral interior of the lifter is fixed in place by being riveted to the vent cover. It does not spin. But when the tube spins, the soft rivet (that you have just removed) works against the lubricated spiral interior tube and causes it to rise and lower, depending on which direction the handle is turned.

Now that you have removed the soft rivet, once the corrosion is defeated, the spiral interior tube could (in theory) be pulled straight up and out (but NOT by the hinge, which is why some of them break off) . I have no idea whether it will work or simply cause damage, but you might try to remove the corrosion by soaking the assembly in some Coca-Cola for a while.

Kroil is availble only by mail order from KanoLab, and likely can be ordered via the web site. Be gentle . . . be patient . . . and good luck!
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Old 07-13-2009, 05:58 AM   #28
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I replaced the astradome on my Tradewind over the weekend. The brackets needed to be massaged to permit the lifting mechanisms to lean outward an extra 1/4 inch on both ends to reach the meat of the embedded metal plate. I drew a template of the curvature and then moved it back the 1/4 inch. I used a cutoff wheel to remove the majority and then finished with a sanding wheel on the Dremel and a file to remove the burr.


I'm going to replace the 14 x 14 in the rear with a Fantastic Fan. If anyone wants the lifters, which do work, from the original fan you are welcome to them for the postage.
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Old 07-13-2009, 07:57 AM   #29
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64 Overlander - look at this

64 Overlander:

Here is an older post from 2005 about repairing the LeDeux lifters on Hehr roof vents. Hope you find it useful. Enjoy!

http://www.airforums.com/forums/f455...ent-16271.html
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Old 07-13-2009, 10:09 PM   #30
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Extra LaDeau Lifter

Dear DieselEagle,

If you have extra LaDeau lifters I would be interested in all of them. I am currently working on mine but am having no luck. How would I arrange for this? I think your astrodome turned out really well. Looks like you have a pretty nice shop in which to work.
Thanks
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Old 07-14-2009, 05:28 AM   #31
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nmbosa contacted me yesterday and the lifters are on the way to Seattle.
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Old 07-14-2009, 08:03 AM   #32
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Diesel, thanks for sending them. 64Overlander, sorry to get the jump on you. The advise on that 2005 thread helped me get two more of mine working, but I still had two that were worthless. Hopefully you can get yours working or find another free pair.
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Old 08-03-2009, 03:31 PM   #33
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this is too crazy

I've been gone forever since asking the original question, am just now getting back and find that you all have been making suggestions, clarifications and transactions. Too cool. Well, I am having a heck of a time getting any one who wants to work in this town, Elephant Butte, and am so frustrated, as I was when I originally got on this thread, but I have made a lot of progress on my own. I still need to reinstall the dome. Along with it came a screen and rubber gaskets. I don't even remember what I ordered from Andy. I thought I had ordered some vent hoods. It sounds like you all are moving along very nicely. I am stripping (waiting period) some metal with removall. I've had it sitting in my living room since back in May. It'll be interesting to see how long this stuff takes to work. Well, thanks for responding and all the great ideas. I'm trying to find luminari? as he wants to take my ripped out stuff, I think. I'm off. bye for now.
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Old 03-24-2012, 01:24 PM   #34
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Originally Posted by Inland RV Center, In View Post
Solar domes are square, 14" x 14".

Astrodomes are rectangular, 14" x 26".

Both are available with a "thermal barrier," a second plate fused to a domed cover.

Andy
Hi Andy,

I just purchased 2 14x14 solar domes form my 91 AS. Ive read the instructions that came with the domes but have questions: When drilling the holes needed to attach the lifting brackets do I drill all the away thru or just into the space between the interior flat surface and the curved dome surface? I see that attaching the brackets 1 way, the rivets will go all the way through to the outside; using the other way I can just drill into the space I mentioned and avoid penetrating outside. Option 2 seems most logical but logical isn't always correct.

Tim
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Old 03-24-2012, 01:31 PM   #35
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Hi Andy,

I just purchased 2 14x14 solar domes form my 91 AS. Ive read the instructions that came with the domes but have questions: When drilling the holes needed to attach the lifting brackets do I drill all the away thru or just into the space between the interior flat surface and the curved dome surface? I see that attaching the brackets 1 way, the rivets will go all the way through to the outside; using the other way I can just drill into the space I mentioned and avoid penetrating outside. Option 2 seems most logical but logical isn't always correct.

Tim
Tim.

Drill all the way through both layers, "slowly".

Then insall the rivets with the rivet heads on the top of the cover.

That provides maximum hold down security.

Place a small dab of Par-bond on top of the rivet head.

Andy
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Old 03-25-2012, 03:10 PM   #36
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Tim.

Drill all the way through both layers, "slowly".

Then install the rivets with the rivet heads on the top of the cover.

That provides maximum hold down security.

Place a small dab of Par-bond on top of the rivet head.

Andy
Thanks, Andy. The backing washers on the outside too? Or both inside/ outside? I purchased some sikaflex 221 - can I use that as a seal for the rivets too?

Tim
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Old 03-25-2012, 04:04 PM   #37
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Thanks, Andy. The backing washers on the outside too? Or both inside/ outside? I purchased some sikaflex 221 - can I use that as a seal for the rivets too?

Tim
Small backup washers on the outside are ok, but not really needed.

A small amount of Sikaflex works great.

Andy
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Old 07-31-2013, 05:15 AM   #38
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While I was cleaning up my lifters, the top hinge bracket separated from the lifter pin. I can't figure out how to reattach the bracket. Is there a special tool that loosens the odd shaped pin that holds the bracket in place? Has anyone ever had a machine shop drill out that pin and replace it with a screw? The lifters now work great, but I am unable to reconnect them to the astradome.

Thanks,
Dave
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Old 07-31-2013, 06:56 AM   #39
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While I was cleaning up my lifters, the top hinge bracket separated from the lifter pin. I can't figure out how to reattach the bracket. Is there a special tool that loosens the odd shaped pin that holds the bracket in place? Has anyone ever had a machine shop drill out that pin and replace it with a screw? The lifters now work great, but I am unable to reconnect them to the astradome.

Thanks,
Dave
The lifters are fastened to the Astrodome with soft "pop rivets", and then adding a little sealer to the exterior head of the rivets.

Andy
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Old 08-01-2013, 04:57 AM   #40
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Thanks, Andy. This part I understand. It is attaching the hinge and flange to the lifter itself that I am having trouble with.

Dave
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