Read with interest the posts on bearing failure in the 09 DD so I decided to take mine apart and have a look-see and found the dreaded and much talked about bad bearing, also the planetary set seems to be able to move around quite a bit in the nubs that hold it in place. I bought the sled used and it has always had a clunk shifting from rev-forward and forward-rev when you bring the revs up and engage the clutch. Is the noise that goes along with changing directions inherant to the new electric reverse? My 07 M8 isn't that way.
09 M8 excessive movement of planetary
- Thread starter lookma/nohands
- Start date
The noise you are hearing is the secondary clutch rotating between the reverse notch and the forward angle. It's just rollers hitting the helix. Not to worry but it does make some noise. You will find too that if you hit the brakes had into a corner and get back to the gas hard and fast you will here it too.
Take the belt off and rock the secondary forward and backward and there is quite a bit of play. Not just the helix
I hear ya, mine is the same way, hardly a precise fit in there at all.
better said
WyoBoy 1000, I should have mentioned the play in the secondary and also drivers when I was giving my description. Glad to hear I'm not the only one to notice this.
WyoBoy 1000, I should have mentioned the play in the secondary and also drivers when I was giving my description. Glad to hear I'm not the only one to notice this.
There is also play between the drivers and the track. That is most likely where you are getting your noise.
The metallic smashing sound comming from the Diamond drive is easy to tell apart from the drivers play in the track windows. The rollers do bang around pretty good on the helix for sure, and wallows the stockers out something terrible. But when i had the drive apart for gears and big bearing, i was surprised at how lose the planitary set was in the case.
I was really surprised at how loose the fitment was in there too. The stuff that rattles are not machined parts, they are just as forged with too much clearance in my opinion. It is a lot cheaper to manufacture that way, but I would pay the extra money for cat to turn them out on a CNC. I think it would definitely help out the brass shim issues if they did.
Thanks for all the replies, it is a little discouraging to hear that this seems to be the norm but time will tell if it turns into a problem. Run em like you ain't got a dime in em.
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