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How to: Replacing suspension bushes (rear) on MGF-the easy way

45K views 73 replies 23 participants last post by  6709  
#1 · (Edited)
Needed to replace bushes on my shock absorbers (dampers). I know they ar enot polys, but for £1.60 each, if they last another 8 years, then I am not complaining ;)

Looked at excellent how to on Rob Bells site. This involved removing dampers. Not a problem...on paper. Couldnt get a good enough grip on top part of the shock to remove top bolt.

So I thought...do I need to remove damper...

No I didn't. Thought it was just easy cos my bush was so knackered, but on the other side, the bush was in better condition and I still did it without removing anything on car, just 1 bolt ;)

So , I will skip obvious stuff such as removing wheels and using axle stands for safety, as this is obvious.

Here is the shock absorber with bush at bottom. This was easily moveable with my fingers...bad times..

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This bolt is 17mm, not 14 as mentioned on Rob Bells site. However most sockets wont fit over the bolt, so you need a deep socket. I had a double ender I use to remove wheel nuts, 17 on one side, 19 on the other (19 for the wheel nuts), and this worked a treat. You need to hold the nut at the other side with a socket/wrench or an adjustable wrench.

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Caution though the bolt on the bush side was well rusted on and this happened to my first 13mm socket. Found a HF Pro one which is good quality and that did the job. You may also want to lube the end of the bolt with release oil for 5 mins or so as this is very rusty and its hard to get the nut off the last bit.

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Anyway, when nut comes off, remove the bolt, a spacer and 2 washers will fall out. The washer goes against bush, the spacer against suspension parts.

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The first bush just pushed out by hand, as did the central metal tube (can't think of a good name just now). The other side was in better nick though and in order to get metal tube out I had to use mole grips and a small socket with tapered end. Pushed the small end into tube then presses it through with moles grips.

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Next the bush, again much tighter this time. Used a screwdriver and it was easy enough to persuade out.

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Here is old bush (worn) and new one. Cost, £1.60 from Rimmers ;)

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To replace, this is where a vice comes in handy. Not ideal if you are doing it on the car, but my vice was small enough to do the job, I reckon it would also be possible just using mole grips etc.

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Anyway lube up the rubber :naughty:, I used white lithium grease, dunno if thats OK or not. I assume it wont perish the rubber though. The bush simply presses in by hand.

I then used the vice to insert the metal tube into the bush. Finished it off using mole grips.

Or another tip here
When you're reassembling the parts, I found it impossible to get the little metal tube back into the rubber bush using the method above - it just kept squirming out of the way. I eventually got it in by putting it over the bolt and using the nut to force it back into the bush.
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Now, in true Haynes fashion, fit in reverse ;)

The nearside one had an extra bracket which attaches to a cable to the brakes. This remains attached though, so its difficult to not remember to connect it.

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Whilst wheel was off I changed my chavvy red rear calipers to silver, to match the front. Bit less "show off" than red, but better than rusty metal.

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#8 ·
Cheers Broony.Appreciated mate.Just gotta ask yer.Why did yer change them besides the obvious of they looked crap.Was there a problem with suspension was a bit shaky or what.
Yeah. My car has been jumping around at the rear when going over vbumps, very twitchy, and generally bumpy. I noticed a few months back that the damper simpy moved with little pressure, so I knew it was a gonner. Its quite a common feature on Fs due to their age and the fact its a rubber component. Add to that the state of the roads in Aberdeen :lol: I already had to change the tie rod bar thingmy last year too, due to perished rubber. I dont think it helps that my suspension is needing pumped and has done for several years :err:

I went for a drive tonight and its quite a startling difference in ride quality!! Going for a decent windy road trip tomorrow should be able to confirm.
 
#9 ·
Anti roll bar links

Just changed the anti roll bar links as they were perished.Changed me wheels as they had a wobble on the front.Difficult to balance.Changed the brake caliper as was seized but still av a bit of a wobble somewheres.Seems to be a bit shaky everytime yer hit a slight bit of rough road.Whilst doin the roll bar links,had a look at the damper bush.Moves around quite a bit so guess it may be gone.Noticed that the offside disc may be slightly warped as well,so this may be the prob......
 
#10 ·
Just changed the anti roll bar links as they were perished.Changed me wheels as they had a wobble on the front.Difficult to balance.Changed the brake caliper as was seized but still av a bit of a wobble somewheres.Seems to be a bit shaky everytime yer hit a slight bit of rough road.Whilst doin the roll bar links,had a look at the damper bush.Moves around quite a bit so guess it may be gone.Noticed that the offside disc may be slightly warped as well,so this may be the prob......
ARBs that's what I emant :lol:

I guess a warped disk would give you wobble
 
#14 · (Edited)
Contacted Rimmers today.They cant find these bushes anywheres.Can you get me a catalogue or ref number and I will ring em back....Cheers
Hi, it's called the shock absorber bush and the Rimmers no for front is RNF100090L(82p each) or RNF100090LP (54p each)for the standard or RNF100090POLY (£1.63p each)for the poly bush. Back is as Broon displays
David
 
#34 ·
This is an excellent how-to (perhaps it should be added to the sticky list). The improvement in ride quality is startling. I do have a suggestion though:

When you're reassembling the parts, I found it impossible to get the little metal tube back into the rubber bush using the method above - it just kept squirming out of the way. I eventually got it in by putting it over the bolt and using the nut to force it back into the bush.
 
#38 ·
Well I finally got round to it and replaced the bushes - my fronts were the worst - Rimmers don't have a listing for the front bushes but the back ones fit very well and look just the same. This one was almost worn right through:lol:

:( that one is quite worn.. Any (1st price for the most stupid question goes to...) difference? My car just tipped 160k km, don't think they have been changed ever, and are thinking about doing this. :)
 
#41 ·
Just like to add an easy way to get the sleeve back into the bush.

Place a socket that is the right size to fit over the bush, but will butt up against the shock on one side of the shock, and the bush on the other side of the shock, Put a long bolt throught the socket, the bottom of the shock and the bush, then against the bush place a couple of flat washers, put the nut on, and as yu tighten it, the sleeve will slide into the bush.

Not quite as much PT as a vice, and easier to do than vice-grips.