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There’s a bunch of important seals that seem to age and give trouble in the ZF box as well. I’ve seen them replaced on different fix videos for different model cars with 6 speed and 8 speed.
Between the mechatronics unit and the gearbox body there are 3 rubber plugs and another rubber piece they call the goggles that are prone to failure and cause issues.
You get all those in a Mechatronic Seal Kit a must to replace when doing the valve body. It may also be worth replacing the Case Connector while your at it. NickQuote:
Originally Posted by PerthDisco
Quote:
Originally Posted by PerthDisco
Noooo..not the 8 speed surely🤤
. And I thought it was almost bullet proof..can't find any issues so far when dr googling the 8 speed..I only find compliments. Surely with millions of them out there some issues would be reported on the net😞
I'm not concerned with mine... you shouldn't be worried..Quote:
Originally Posted by INter674
ZF are bullet proof if looked after. The 8 speed even more so.
You need to replace the mechatronic seal, plus the vb to transmission seals are a must, and whilst youre in there the solenoids. Look after it and will look after you.
At what ks approx should seals etc be replaced..I've done the fluid change at 90000 ks?Quote:
Originally Posted by Eric SDV6SE
I’m at 225k kms on ZF6 and coming up for third oil flush. Thinking now would be good time for the mechatronics service kit.
Hmm, good question. I had the first full flush done at 120k kms, then i rebuilt the vb at 160k km as the gear changes were getting harsh and reverse selection took a few seconds. I bit the bullet then and preventatively did the full vb overhaul inc new mechatronic seals, solenoids and steel pan, duoprene gasket etc.. Was about 1200 in parts including 20l of penrite BMV iirc.
Now at 200k km (199562 to be exact) and no issues. My recommendation would be at around 140-160 IF the fluid has never been changed, otherwise do it when you notice the gear changes getting harsh and gear selection is longer than a second or two.
I am planning the new full flush at 240,000km, so 80k km between fluid changes seems ok to me.
Car was on its best behaviour today. Still, full valve body rebuild planned.
Just need solenoids
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DiscoJeffsterQuote:
Originally Posted by DiscoJeffster
If not too much trouble would you please list out the parts that you've assembled for the valve body rebuild? I feel that our 2012 SDV6 is at 158k kms and the 6 speed is doing some 'strange' things. Are you doing the work at home or are you enlisting a reputable Indie to do it? I have rebuilt multiple engines and diffs, but never touched an auto before (box of black magic.......). When my old Series 1 Disco tdi ZF auto box destroyed itself I got a replacement done by my local Indie. Willing to give it a go with my newly acquired workshop manual if home doable.
Regards
Goldey