In Reply to: Rear Accumulators information posted by Rob Baum on December 22, 1999 at 12:04:08:
I replaced rear accumulators on my 1990 735iL.
I sprayed the lubricants used for rusted and frozen nuts on the hydraulic fittings and then let it soak for few hours. Turning the nut with the wrench started to round off the nuts. So, I placed vise grips on the nut and was able to loosen it with no problem, did not have to replace the hydraulic lines.
Does your car sag problem go away, if it did sag prior to changing the accmulators?
There is a way to fill or pressurize the hydraulic system after replacing the accumulators, it is described quite well in the new release of the Bentley Manual for 7 series.
: I have a problem with my 1990 750il in that the car rode stiff and would bounce when I would hit a bump. I though the shocks were bad. I found out the fix is to replace the rear accumulators. I changed these out and also have to replace the hoses due to not being able to remove them from the accumulator due to rust. I had a hard time getting hoses because there the hoses are for a right and left hose. There is very little difference between each hose and in a pinch you could bend it to make it work for each side, but better to get the correct hose. Well after the accumulator were replaced the car rode great. Since I never rode in a 750il prior to my car I did not know how is was supposed to ride. I was told the rear struts which look like shocks don't need to be changed but if you don't correct the accumulator problem that can lead to damaging the rear struts. Now riding great in Florida