What is best Transmission output shaft seal?
Mine are brand new and leak.
Does someone have advice on what works... What to avoid?
What is best Transmission output shaft seal?
Mine are brand new and leak.
Does someone have advice on what works... What to avoid?
Current long term ownership: 63 Cab, 71 911, 74 914
Scott, I think it's unlikely that the seal quality is an issue. Most vendors sell the Elring brand, which are fine.Originally Posted by Scott A
This isn't a very harsh or demanding place for an oil seal.
These seals are often installed incorrectly, or damaged in doing so, and the seal surface on the axle flanges can be an issue too.
If the leak is occurring on the RH side only, make sure it isn't coming from the transmission vent.
You didn't mention the model year involved, or if one or both seals are leaking...
Jon B.
Vista, CA
I've had the Elrings leak , installed a new one and no leak . If you want better quality , buy seals from the dealer . I know other people that have experienced leaks with the Elrings .
I’m with Richy, have had multiple seal leaks with gasket set seals, installed correctly. I always install Porsche drive seals.
Gordon, what brand is Porsche supplying these days?
Elring, Kaco, Goetze and CFW (Freudenberg) have all been suppliers of oil seals to Porsche.
The Elring seals I've been receiving are still German-made, and have not been a problem for me.
I do a fair amount of prep and inspection first, and I use the various factory oil seal tools.
Jon B.
Vista, CA
Jon,
Would you mind measuring the depth of the step on the tool for correctly setting the seal depth?
jule
The Porsche seals are not branded to anything I recognized, but have double lips. The Elring seals are not like the seals I see in your pix. The Kaco seals were great, again double lip, but I can’t seem to get them. I do use the special tools but on some of the reinforced side covers, I have to add diff shims to set the seal deep enough. I just make sure the seal doesn’t ride up on the radius of the drive flange. I’ve done hundreds of boxes and I’d be satisfied if none leaked. I have noticed after doing some multiple times (race boxes) and repeat street boxes that boxes with Swepco in them have accelerated seal wear. I haven’t experimented with other oils. Yet G50 type boxes with synthetic oil in them have no seal wear, some I’ve rebuilt multiple times and not replaced seals at all. Not a very clear pix of Porsche seal.
That's what I wanted to hear.
I think double lip is the way to go.
Current long term ownership: 63 Cab, 71 911, 74 914
Jule, the tool setting depth (step) is 5 mm.
As Gordon said, you can place various shims between the tool and seal to increase the installed depth.
Scott, the outer lip of the oil seal is merely a dust shield. It does not have a garter spring.
If oil gets past the inner sealing lip, it will easily get past the outer lip.
Jon B.
Vista, CA
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