rear prop rubber gater.... which way round?????

[disco-v8]

well im going through the rubber dough nuts 1 every week!!!!!!

and this is the out come of one after 5 hours of offroading



well ive just bought another with the rubber bush that goes inside the prop shaft and want to make sure that im putting it on the rite way around?????

well i usualy put it so that when the car is going forward, the prop shaf pulls on the thicker part of the dough nut, where i thought i would be stronger.... is this correct????


thought id do this little pic to help out

the part in red is the propshat part, so the axle and diff would be behind the rubber dough nut.... and the direction of rotation is if the car was in a forward gear

[extreme90]

adam do away with it and have a normal flange

[Jake]

If its a genuine GKN replacement it will have a direction arrow for the bolts.
If you put it on the wrong way round they fall apart.
The best thing, as Dan pointed out is to replace the rear prop with a normal 4 bolt and change the diff flange.
No more problems
 

[Range Rover Blues]

On the outside there should be some small arrows marked to show you which way the bolts go through.  That said mine were the wrong way round, but like you said the thicker part is in tension.  I'd haved guessed that wrong myself though.

Is your truck lifted?

[extreme90]

On the outside there should be some small arrows marked to show you which way the bolts go through.  That said mine were the wrong way round, but like you said the thicker part is in tension.  I'd haved guessed that wrong myself though.

Is your truck lifted?

its got a 6" lift on it  :shock: :roll:

[disco-v8]

dont worry ive already thought about changing to a UJ prop but as ive got this rubber dough nut just sitting here, i mase well use it and hope for the best..... if it rips again then will be defo changing props around

and as dan has said.... its got a 6" lift  :-o


just checked for those arrows on the edge and it still doesnt help me???????

just think about it.... al its telling you is which way the bolts go through..it doesnt tell you which part of the prop shaft joins to which part of the dough nut....... also the arrows dont realy say which way the bolts go through..... do the go in the end they point at or do they have to be pushed in the way its pointing


still need more help on this guys

[J13 MUD]

I am very interested in this post, spent today at Whaddon and got this really bad vibration on the way home. My rear prop doughnut was exactly like the one in the first picture. Removed rear prop and got home. The question is with a 2" lift would a 200tdi prop with a four bolt flange work?
One last question, I have a spare 300tdi front diff, could I replace the 3 bolt doughnut flange in my rear diff with the 4 bolt flange from my spare front diff?
Thanks guys and apologies for jumping in on this post.

Jim

[extreme90]

I am very interested in this post, spent today at Whaddon and got this really bad vibration on the way home. My rear prop doughnut was exactly like the one in the first picture. Removed rear prop and got home. The question is with a 2" lift would a 200tdi prop with a four bolt flange work?
One last question, I have a spare 300tdi front diff, could I replace the 3 bolt doughnut flange in my rear diff with the 4 bolt flange from my spare front diff?
Thanks guys and apologies for jumping in on this post.

Jim

it would be easier to change the complete diff
at the flange is a royal b****** to get off at times 

[ChrisW]

IF you can get the peg out of the diff you can unbolt the flange and swap it for the flange from the front diff and fit a 200 rear prop, works much better for me with 2" lift, although we swapped the rear diff for a front diff complete as the old diff was fubar'd.

[disco-v8]

well ive just looked at my parts CD to see if it helps, and guess what

IT DID!!!!!

well i couldnt copy the picture across so took a picture of it instead to show and help others......


i realy thought that pulling onthe thick part of the dough nut would have been the correct way but this shows otherwise.......

just goes to show that somethings arent as easyily understandable as you may think!!!!!

[Gav_T]

I fitted one of them today (in the mud, at tong just before i went off roading) as mine totally goosed. Tbh i didnt realise that there was a right and wrong way but its survived a days punishment and got me back from bradford! I too am doing the 200 tdi prop conversion but i want to know if i can use the diff flange off a 1990 defender d turbos diff because my mate is having the whole axle for his and said i can have his diff.

Mine is 1995 v8 btw.

Gav.

[Range Rover Blues]

It's just not designed to cope with a 6" lift, who knows how much stress it's under like that.  Time to swap for a wide-angle propshaft I reckon.

Dan's right it's going to be as easy to swap the whole diff for your spare front one.

Myself I always thought that the thicker part should be under compression, but I was told it didn't by Propshaft Technology.  If you put the bolts through the rubber in the direction of the arrow then it will only fit one way round, takes a moment to get your head round it but it works, honest :-k

[Guardian.]

THATS A Total waste of time changing if you havea 6" lift it wil constantly rip them its just not designed for anything like that, they are fine with a 2" lift, but beyond that is taking the pee a bit.
is the lift just on the springs or is that with a body lift as well?

[Budgie]

I've had the dough nut on my +3" Disco for about 4 years now without changing it, still fine.  :P

One thing that may help is the cranked trailing arms that Scorpion sell, you can pack these out with washers at the chassis mounting to bring the nose of the diff more in line when you have a lift fitted. Although I don't think that would cope with +6".

The problem I had when I tried to change to the double U/J rear prop on mine was that it caused a vibration at the rear, and I didn't have any packing washers for the trailing arms, so I just went back to the original prop and I never got round to changing it again. 

[4 landies]

 I went through 3 donuts in a month until I bought a genuine landrover one with the arrows on. The parts guy told me the correct way to fit it and its been on for 4 months now and no signs of wear at all and its got a 4" lift on the suspension.