Replacing final drive question.

[Jiffy176]

Hi all.
I recently replaced my paralever bearingsanf upkn removing the fd it just slid out slowly. However when I put it back together I popped the pinion driver out of the fd like the guide suggests and then greased the splines and inserted into the drive shaft correctly phased.

What I didn't do at this point was give the end of the pinion drive a tap back in. I did make sure it was pushed all the way up. I then re fitted the fd which was slightly tricky for a first timer but managed it ok.
It all lined up with no issues with the para lever pivot bolts and rides fine. Should I have given the end of the pinion a whack back in?

How does the pinion lock back into the fd?
Not fancying having to take it all apart again!!!
Help appreciated thanks.

 

[MikeP]

How does the pinion lock back into the fd?

Do you mean the universal joint?

This thing:

If so, there's a spring circlip inside that needs to snap back to avoid it sliding to and fro.

 

[Jiffy176]

Mike yes the uj that connects to the fd to the main shaft. It all slid off connected to fd. I popped it out of the fd as described with a screwdriver. But mine looked different. Mine is only the joint and the splines. Not the smooth cylindrical bit above the splines? It an 01 1150?


It looks like I misread the guide. I phased the two UJs but left the UJ attached to the shaft and then fitted the fd to UJ.
Can anyone confirm correct way would be to phase UJs then remove UJ, refit to FD and then put back together?
Deep joy stripping down again, fortunately I didn't locktite the para bearings!

 

[davegs]

F D

Just grease the splines and it just pushes on no clips at all, done mine (2001 1150 )many times.

 

[Jiffy176]

Thanks Dave. My question is should I have tapped the UJ onto the fd and then fitted it all to the shaft as one rather than the way I did it which was fit UJ to shaft and then fd to UJ just sliding it together?

 

[fatnfast]

I fitted the UJ to the final drive to make sure the snap ring clicked home.
I guess your asking could the snap ring have not located onto the FD correctly?
I dont know if the splines will allow enough movement to stop the snap ring locating when all back together, hopefully someone will confirm this if it is the case. Failing that, you could maybe slide the rubber boot back and see if there is excessive fore and aft movement?
It would be easier to get it all in phase the way you did it thats for sure.
If it was me I would whip it apart and check. With care you should be able to just slide the FD back enough to have a look by pivoting it on the torque arm.

 

[Welshman]

I forgot to give mine the smack and screwed up the bbottom joint it moved around on the splines and screwed them up luckily FD was Ok

 

[Jiffy176]

Thanks for the replies. I'll be on the safe side and check. I've only done about 50 miles since putting it back together so hope there is no damage.
I did notice a whirr as I slowed down but I didn't have earplugs in. Better to be safe than sorry. Deep joy!!

 

[MikeP]

Mike yes the uj that connects to the fd to the main shaft. It all slid off connected to fd. I popped it out of the fd as described with a screwdriver. But mine looked different. Mine is only the joint and the splines. Not the smooth cylindrical bit above the splines? It an 01 1150?

Sorry for the delay answering, no that one is from a K-Series Paralever (same horse different jockey).

Thanks for the replies. I'll be on the safe side and check. I've only done about 50 miles since putting it back together so hope there is no damage.
I did notice a whirr as I slowed down but I didn't have earplugs in. Better to be safe than sorry. Deep joy!!

As Welshman has said, the UJ can slide up and down causing damage, best to be certain and as you've done the pivot pins recently it's not as if they're going to be difficult to undo.

BMW introduced an index spline to later 1150 models.

 

[Jiffy176]

Well I took it all apart today. Surprising having no lock tight and knowing what I was doing I had it apart in 30 mins. The UJ hadn't locked into the fd so it was well worth doing. Gave it a light tap with the rubber mallet and job done. Put it all back together and just waiting for the father in law to pop round and sit on it to do the torque arm. The UJ looked fine no signs of wear and I forgot to check the fd as it was balancing it all with 1 hand whilst still connected to the torque arm but I'm sure there would have been marks on the UJ if there was a problem and that was clean as a whistle.
Thanks for the help folks.

 

[Comfy Old Boots]

Sitting on it to tension the torque arm? Is that necessary?

 

[Jiffy176]

Tis what the instructions say. 87 kg then torque up.