- 22mm and 13 mm sockets.
- Spring compressor (can be loaned for free from Pep Boys).
- New rear shock mounts ($23.00 each) Don't
buy MEYLE, specify BOGE
- Lot's of WD 40.
- Ratchet, extensions and u-joints.
- Anti seize compound.
1. Lift the rear and support it on jacks.
2. Spray the 22mm bolt with lot's and I say lot's of WD40.
3. Remove the rear seat cushion, headrests, headrest plastic
cover (attached to the backrest, you have to turn the 2 plastic
screws 1/4 of a turn with a big flat screw driver or a coin)
4. Remove the 2 strut upper mounting covers and the 3 x 13mm
nuts with a ratchet, extension and u-joint.
5. Beneath the car, remove the 22 mm bolt. Now the fun begins.
6. The bottom of the E34 rear shock has a tube that goes in
the trailing arm. You can imagine how rusty this tube is.
The trick is to spray a lot of WD40 in the tube (where the
screw was) and all around it. Now find a long round and strong
tube (I used the end of the E34 wheel wrench) and insert it
where the screw was located. Now push forward on the bottom
of the shock while at the same time jiggling the shock absorber
right and left with the help of the long tube (or wrench).
From Brando J.: To remove the rear shocks you can also
buy a set of pry-bars (of different lengths; many auto stores
have them) and simply wedge the tip between the bottom of
the shock and the trailing arm. Give a good push against the
shock and the shock will slide (or pop) right out.
Worse case, if everything is siezed use a big hammer and a
chisel, I also used a pickle fork and it worked pretty well.
From John C. in Ireland: I have an easier and better
method of rear shock removal. One you have the large 22mm
bolt out of the bottom attachment, measure and cut a length
of 10mm mild steel rod to go in the hole, and rest approx
three millimetres in from the mouth of the hole. Use the end
of this filler rod to seat the centre of a small three-legged
gear puller, and arrange the puller's legs around the bottom
ring of the shock. It is then easy to tighten up the puller,
and wind the shock out of the housing, no damage, no violence,
no heat, no acetylene. Having tried all those things, I can
vouch for the gear puller!
7. After a while you will see the rear shock coming out. Clean
the area where the tube was and put some anti-seize grease
8. Clean the spring with a metal brush, then remove the old
shock with the spring compressor. Check the installation notice
of your new shock. Don't forget to use new rear shock mounts.
One threaded pin (1) should ligned up with the flat surface
and the opposite side of (3)
9. Installation is the reverse of removal. (Strut assembly
to trailing arm 22 bolt: 127 Nm - 94ft-lb)
Just replaced the rear shocks on my E34 and wanted to
pass on a tip. The refurbished unit measured 23" from
bottom shock bushing to the top mount surface, and the corresponding
distance was 19" on the car. At first I couldn't work
out how to lower the trailing arm to get the extra distance-
it just wouldn't budge and there was no way the shock unit
was going to fit. Then I realised why- the handbrake was on!
I released the handbrake and this allowed the trailing arm
to drop another few inches. I undid the link to the rear stabiliser
bar and this gave a couple more inches to play with. Job done.
Thanks to Phillips V.
10. Enjoy a wonderful ride. I sure did...
Thanks to Oleg, Brando J., JohnC.