Rear Shock Replacement

[StrongSpearWorks]

Oooohhh. Mine have rubber gators ( well, they used to, they’ve perished to nothing). Does that mean Nivomats?


Urgh.

[360beast]

Originally Posted by StrongSpearWorks

Oooohhh. Mine have rubber gators ( well, they used to, they’ve perished to nothing). Does that mean Nivomats?


Urgh.

Rubber gaiters does indicate nivomatics as the normal ones have a plastic sleeve over them as a gaiter.

You will need to swap the springs for normal ones or heavy duty ones if you're carrying heavy loads frequently.

[Ian21401]

As Luke said above, if you are replacing nivomats with normal shocks then you will also need to fit the relevant springs. The springs fitted with nivomats are softer as the nivomats take part of the load. I made that mistake when I first acquired my 940 estate and didn’t know about ( and couldn’t afford ) to replace the nivomats. I fitted some Monroe shocks but didn’t change the springs so the rear of the car was rather lower than desirable.
I was later able to obtain a pair of nearly new nivomats ( Boge actually) and fitted them. I’ve recently replaced the rubber bellows on them and they are still doing their job.
Are you sure one of yours is shot, or are you just surmising because of the slight misting at the last MOT?
The bellows were available from my dealer and weren’t expensive.
There is also a school of thought that nivomats do NOT need to be replaced as a pair, simply replace the dead one.

[StrongSpearWorks]

The bottom bolt looks wet with oil, the arse end has got a defined stoop on the effected side and the back end feels distinctly… off.

[bob12]

Originally Posted by StrongSpearWorks

Oooohhh. Mine have rubber gators ( well, they used to, they’ve perished to nothing). Does that mean Nivomats?


Urgh.

Naturally!!

[bob12]

Originally Posted by StrongSpearWorks

The bottom bolt looks wet with oil, the arse end has got a defined stoop on the effected side and the back end feels distinctly… off.

If you have a defined difference of rear wheel arch height on one side when at rest (there's a far more detailed proceedure for checking Nivo efficiency that I won't go into here!!) it's knackered, especially if the gaiter is falling to bits with oil on the lower fitment/bolt.

If the other side is OK with no weap of oil it will survive for a while 'cause in theory you don't actually have to replace both. Naturally the pistons self-lubricate under the gaiter.

Bob.

[Ian21401]

Knowing what I know now, If I had a similar problem with my car ( and could afford to do so) I would obtain and fit another nivomat and replace the bellows on the other shock. Changing shocks means changing springs.and I believe that there are comments elsewhere of possible age related problems with the upper mountings for the springs.
There are others on this forum who definitely do not like nivomats at all, but it is matter of personal choice.

[classicswede]

If you have nivos then you will also need to replace the springs.

Full kit to do that

https://www.classicswede.org/shop/ni...40-940-760-960

If not Nivos then go for some gas pressurised dampers https://www.classicswede.org/shop/7-...es-rear-damper

[borgman]

Originally Posted by jpliddy

are yours nivomat or standard shocks i got rid of my nivomats recently ,
so now got standard shocks and lesjofors heavy duty springs was able to do the job thanks to mark grindstone and luke 360 beast guidance , get new topmost studs and nuts for the springs and new bolts and nuts for the bottom shockers fittings ,

Him how have you found the ride quality? Has it improved on standard shocks?

thanks

[StrongSpearWorks]

Originally Posted by griston64

It's the top studs and nuts that will be welded with rust. Better order new before you start. I bought all lower bolts as well

No 17 spring cap is NLA

Where can I order new bolts from?
(might seem like a stupid question...)

EDIT: just wrote down all the part numbers from the linked diagram, noticed that diagram is for 1994 onwards. Looked up the 1991-93 parts catalogue and they're all different part numbers (facepalm)