lower wish bone removal

[Number 6]

For any one who has done it..

You can replace the rear rubber bush mount and replace it while leaving the lower wish bone still attached as the rubber mount can be pulled off.
Therefore if you want to replace the lower wish bone can you pull the wish bone out of the rubber mount leaving it attached to the sub frame?

[COLVERT]

You can but as the rubber bush and housing are not at all expensive it would be wise to change them at the same time.

[Number 6]

Originally Posted by COLVERT

You can but as the rubber bush and housing are not at all expensive it would be wise to change them at the same time.

Yes I understand that, But I have only recently replaced both rubber mounts and imagined that it would help not having to remove them if they could be left in situ.

[SD1too]

Originally Posted by Number 6

Therefore if you want to replace the lower wish bone can you pull the wish bone out of the rubber mount leaving it attached to the sub frame?

I'm working on mine at the moment John and I would say not, as there's the little matter of the inner balljoint attaching the arm to the subframe. I very much doubt that you'd be able to release that with the bush in place.

Simon

[mh007]

So much easier to just remove the arm & bush & as said, I doubt very much if you would have enough lift on the inner ball joint to get the pin out of the subframe.

If I have to replace the arm, I always quote for a bush too anyway.

The good news (for the OP) is that your new bush (or bushes) should come off of the old arm with ease.

[macafee2]

I think we are talking these parts
https://www.dmgrs.co.uk/collections/...1760-rbx101770

I think marinabrian has also said they can be done by just lowering the sub frame a little. You are working in a very tight space, something I am not good at and I query if there is space to torque the fixing bolts up.

macafee2

[TourerSteve]

Originally Posted by Number 6

For any one who has done it..

You can replace the rear rubber bush mount and replace it while leaving the lower wish bone still attached as the rubber mount can be pulled off.
Therefore if you want to replace the lower wish bone can you pull the wish bone out of the rubber mount leaving it attached to the sub frame?

As echoed by others If your replacing the arm change the rubber mount , your doing the hard work removing the pinch bolt and ball joint . for the sake of two extra bolts its out . It’s a no brainer
If you damage the bush pulling the arm out you will have to replace it anyway ,which if aging can be starting to become unbonded !

[Number 6]

Originally Posted by TourerSteve

As echoed by others If your replacing the arm change the rubber mount , your doing the hard work removing the pinch bolt and ball joint . for the sake of two extra bolts its out . It’s a no brainer
If you damage the bush pulling the arm out you will have to replace it anyway ,which if aging can be starting to become unbonded !

I understand all that, but the bushes were only fitted about 18 months ago. so they shouldnt need replacing (I hope). Also they are a PITA to get at.

[Ducati750cc]

Also they are a PITA to get at.


Been there and done it several times, but always change them for poly bushes, if I'm replacing the arm I simply cut through the ' tail ' of the arm which quickly gives enough wiggle room to get the ball joint out and more working space to attack the mount bolts.



Couldn't agree more, especially the problem with bolts that haven't been touched for years and after knocking the rust scale off the heads you find the best socket / ring spanner in the world is not the tightest fit.


It wasn't BMW who put the mounting bolts on their models from below...............was it ?


I've recently been given another tourer ( 3 now ) an MOT failure for severely corroded upper rear arms and what appeared at first sight as very heavy rust scale over the whole of the rear underside but after a quick exploratory zap with a needle scaler looks OK, an otherwise nice car.


I've been taking photos as I've been doing it and will post them when finished, the reason the corrosion was so bat will be interesting to see.

[TourerSteve]

Originally Posted by Ducati750cc

Also they are a PITA to get at.


Been there and done it several times, but always change them for poly bushes, if I'm replacing the arm I simply cut through the ' tail ' of the arm which quickly gives enough wiggle room to get the ball joint out and more working space to attack the mount bolts.



Couldn't agree more, especially the problem with bolts that haven't been touched for years and after knocking the rust scale off the heads you find the best socket / ring spanner in the world is not the tightest fit.


It wasn't BMW who put the mounting bolts on their models from below...............was it ?


I've recently been given another tourer ( 3 now ) an MOT failure for severely corroded upper rear arms and what appeared at first sight as very heavy rust scale over the whole of the rear underside but after a quick exploratory zap with a needle scaler looks OK, an otherwise nice car.


I've been taking photos as I've been doing it and will post them when finished, the reason the corrosion was so bat will be interesting to see.

BMW Certainly excelled with the mounting of the bolts between subframe and car body !
If memory serves me right it doesn't help that the bolts have A/F of 18mm either . I have a selection of combo spanners cranked and angled, also a set
of aviation spanners similar to linked below . I always ensure the bolts are well copper greased up on refitting

https://www.amazon.co.uk/Bergen-Gear...y%2C158&sr=8-3