On the cadge - 251711184c - Boot for T3 Syncro gear linkage

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Simon Baxter
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On the cadge - 251711184c - Boot for T3 Syncro gear linkage

Post by Simon Baxter »

Anyone got one of those rubber boots that fits at the front of a T3 syncro gear linkage?
The one that's always hanging in pieces, fits over the front end of the plastic protection tube (drain pipe for want of a better word) for the gear linkage.
Supplier interested in making them but struggling to find any decent samples.
If so and you can help then mail service@brickwerks.co.uk
Ta.
Simon.
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Aidan
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Re: On the cadge - 251711184c - Boot for T3 Syncro gear linkage

Post by Aidan »

just make a replacement from a generic universal steering rack gaiter, then you can ditch the plastic waste pipe tube and the piece of now hard fuel hose and stop the tube banging the floor where the piece of foam has gone to dust, a simple cheap solution which is what Steyr should have done in the first place, I can't believe the complexity of their solution with a unique boot that wasn't flexible enough to stop it cracking; someone must have got a backhander from the plastic tube and hose suppliers

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Re: On the cadge - 251711184c - Boot for T3 Syncro gear linkage

Post by 4x4 Bus »

SA syncros didn't use either sleeves ( covers) they had the same boot and bush fitted as on the gearbox.

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Re: On the cadge - 251711184c - Boot for T3 Syncro gear linkage

Post by silverbullet »

...and early syncros didnt even have them anyway!
Bloody daft idea and all to keep a bit of muck off of one bush and a u/j

But Simon is asking for a good example in order to remake them, for those who like originality.

These people do exist :D

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Re: On the cadge - 251711184c - Boot for T3 Syncro gear linkage

Post by syncroandy »

Being in a wetter, muddier, part of GB I didn't consider it daft to have a bit of protection on the middle bushing, so I opted for Aidan's solution and fitted a steering-rack boot in place of the OG plastic pipe and fuel filler hose offcut (rendered useless by the missing 251711184C boot). 

After a bit of research I found the 'Bailcast DBSR100' boot had suitable dimensions. eg. 40mm one end, 20mm t'other end, and 'not too wide'. This boot measures ~62mm wide. It's made in GB.

My initial plan was to secure it to the bush retaining sleeve at its wide end and have the 20mm end free-floating on the shaft, on which its a close fit but can slide as the gears are changed.

Once it was fitted and I was able to properly assess it, I decided the boot is long enough and with enough freedom of travel to secure (seal) it at the 20mm end. I don't think there's enough spring in the rubber to load the gear selection unduly. It clears (just) all the metalwork around it, so I don't think there's any risk of chafing in use.

PS. I have replaced all the old moly grease on my linkage from front to back with Mobil XHP222 waterproof grease from a local agricultural suppliers.

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Re: On the cadge - 251711184c - Boot for T3 Syncro gear linkage

Post by silverbullet »

Thanks for that info Andy, fyi the angular rotation of the shift rod is about +/-7 degrees which may.not sound much, but its enough to maybe twist the boots?
You've just reminded me that I need to do this job while the engine comes together and I have just sent a load of parts out for zinc plating....damn.
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Re: On the cadge - 251711184c - Boot for T3 Syncro gear linkage

Post by syncroandy »

Thanks, yes the other day I was pondering this and realised about the 'twist'. But today under the bus I forgot about that.

I will re-assess how it looks in each gear, if I'm not happy I can easily take off the cable-tie on the 20mm end and go back to free-float.

TBH, I think it'll be OK, the rubber they used is sort of 'flobbery', and doesn't have much 'spring'.
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Re: On the cadge - 251711184c - Boot for T3 Syncro gear linkage

Post by silverbullet »

Flobbery is a great word :lol

To clarify: I dont have the linkage protection tube so was going to weld a bit of 40mm tube to the front bush retaining plates and put another gaiter over the u/j
85 syncro Caravelle twin slider Oettinger T3200E-6
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