Labyrinth rear main seal for (80-series) 1HZ/1HD-T/1HD-FT/1HD-FTE?

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Dec 1, 2020
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Hi chaps. I recently replaced the rear main seal on '96 80-series 1HZ. Now, currently I have some labyrinth type rear inner axle oil seals. This video shows a Terrain Tamer swivel hub version:

So, for those that aren't overly familiar with these types of seals, their advantage is that the lip on the shaft doesn't actually rotate, thus they don't wear a groove (eventually) into the shaft. Now, has anyone seen a version of one of these for the rear main seal? I daresay it would simply be a matter of getting the exact size of the existing rear main seal and then trying to track down a labyrinth seal equivalent manufactured by one of the many oil seal manufacturers out there. Anyway, just putting it out there in case someone else has already looked into this.
 
Have you tried posting in the Diesel Forum?

AFAIK no one makes a Casssette/Labyrinth type rear crank seal for the FZJ80/1FZFE (90311-99006 superceded to 90311-99009 : ~ 99mm x 119mm x 9.5mm)
but IDK about the 1HZ rear crank seal (90311-95008) which appears to be 95×115×9.5/12Fmm?



If anyone has looked into that idea it might be Terrain Tamer (or see the link below), at least they might know what it would entail (prototype, testing, etc).

Or you could start writing some seal manufacturers and ask if they would be interested in making such a seal (SKF, Timken, Parker Hannfiin
Feudenberg, NOK, Trelleborg, etc,). The stock NOK seal (in the FZJ80) lasts hundreds of thousands of miles and if there's a groove some people have adjusted the depth of the new seal slightly or installed a SpeediSleeve.

Is your rear crank seal leaking, got a groove on the shaft or ??

Have you run your question by these guys?

 
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