DIY'd 12C accumulators today
DIY'd 12C accumulators today
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meridian

Original Poster:

295 posts

308 months

Saturday 25th April
quotequote all
Did the 4 suspension accumulators on my 12C today, on the driveway, so to speak. Car is quite new to me but was definitely riding firm, with no discernible difference between Normal,Sport and Track...

..had no doubt they were shot

Bought 4 MLR 40.140 accumulators direct from MLR in Canada, total £864 including fast UPS shipment and no additional duties due

Took me 3.5 hours, not rushing things. It's a very uncomplicated job, and most time is spent removing trim, wheel arch liners, battery etc

I honestly believe the units removed are the original ones. The car has good history, with main agents and the best thought of independents. Nevertheless, owners of this car in recent years have not had the benefit of how good a 12C is

The car is transformed,with a suppleness just not present before

A good afternoon's work..

Edited by meridian on Saturday 25th April 17:47


Edited by meridian on Sunday 26th April 07:35

BAMoFo

1,042 posts

281 months

Saturday 25th April
quotequote all
Good effort. It is always satisfying to do that type of job and the bonus is you save a lot of money. You also did well not having to pay any additional customs duties. I imported some headlights from the US in December 2025 and some gearbox potentiometers from Germany last month. In both cases I ended up paying double the amount of customs duty that was due. I have been reimbursed for the additional £400 that it cost for the headlights, but have almost written off the money for the gearbox potentiometers because it is impossible to contact Royal Mail about it via email, post or telephone.


650S

154 posts

195 months

Saturday 25th April
quotequote all
Well done, the 12C is a superb car for many reasons, and the accumulators are a key part of that.


meridian

Original Poster:

295 posts

308 months

Sunday 26th April
quotequote all
BAMoFo said:
Good effort. It is always satisfying to do that type of job and the bonus is you save a lot of money. You also did well not having to pay any additional customs duties. I imported some headlights from the US in December 2025 and some gearbox potentiometers from Germany last month. In both cases I ended up paying double the amount of customs duty that was due. I have been reimbursed for the additional £400 that it cost for the headlights, but have almost written off the money for the gearbox potentiometers because it is impossible to contact Royal Mail about it via email, post or telephone.
Yes, I was expecting some import duty, but resultantly the items cleared customs and were delivered immediately. Might have got lucky ! Sorry for your import experience. As you say, satisfying to do some of this stuff yourself. Don't get me wrong, the car has just had a belt and braces major service completed by a specialist, so i will only complete some of the jobs myself...

meridian

Original Poster:

295 posts

308 months

Sunday 26th April
quotequote all
650S said:
Well done, the 12C is a superb car for many reasons, and the accumulators are a key part of that.
Precisely this. The Super Series cars' suspension is very much a great part of what makes them Super Series. With failed accumulators the system just cannot work as intended. It's a shame to have such an incredible car, that's ultimately not driving as it should. Very pleased to have completed this...

Familymad

2,074 posts

242 months

Sunday 26th April
quotequote all
Excellent work. Now did you do a YouTube video on it as a step by step? Could have made your millions !!

meridian

Original Poster:

295 posts

308 months

Sunday 26th April
quotequote all
Familymad said:
Excellent work. Now did you do a YouTube video on it as a step by step? Could have made your millions !!
Aaah, missed a trick there !

speedick

148 posts

262 months

Wednesday 29th April
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Good effort ...... It's a much easier job than I had expected when I did mine.

One thing worth noting though - one of the front ones can be a clearance problem for the aftermarket cylinders (which are taller than the MC ones) against the pipes coming from the suspension manifold next to the battery. The other 3 are fine.

As you said - it's easy to see if the old ones were any good once you've changed them. ...... "Night & Day !"

meridian

Original Poster:

295 posts

308 months

Wednesday 29th April
quotequote all
speedick said:
Good effort ...... It's a much easier job than I had expected when I did mine.

One thing worth noting though - one of the front ones can be a clearance problem for the aftermarket cylinders (which are taller than the MC ones) against the pipes coming from the suspension manifold next to the battery. The other 3 are fine.

As you said - it's easy to see if the old ones were any good once you've changed them. ...... "Night & Day !"
Absolutely, the rhs front (as viewed from front) clearance is marginal against the hydraulic pipe, but nevertheless ultimately fits. It's just a matter of technique, which one eventually will work out. For what it's worth, the difference in length vs original is 2-3mm, just enough to make it a little tricky, but as I say the MLR slots in there without modification

'Night and day' apt expression for the difference between new and knackered units. The difference really is huge and transforms the car back into what it was designed as...

Edited by meridian on Wednesday 29th April 16:29

ex-devonpaul

1,673 posts

162 months

Wednesday 29th April
quotequote all
meridian said:
Familymad said:
Excellent work. Now did you do a YouTube video on it as a step by step? Could have made your millions !!
Aaah, missed a trick there !
That's easily solved, just swap them back again and reverse the footage smile

meridian

Original Poster:

295 posts

308 months

Wednesday 29th April
quotequote all


That's easily solved, just swap them back again and reverse the footage smile
[/quote]

Nice one. Video coming soon !

meridian

Original Poster:

295 posts

308 months

Wednesday 29th April
quotequote all
Had a chap on Facebook who wanted the old ones, so that he could look at developing a future refurbishment/fix on worn items..

..I explained that p&p via Parcel force 48 would be £12-£15 as quite heavy, and given that I needed to box up and take to Post Office suggested £30 would be fair. After all, I have paid £800+ to enable the knackered ones to be moved on

He thought I was taking the 'mickey' I genuinely wasn't and thought that given the opportunity the old ones would afford him, all was fair

What do you all think ?

In any case, he won't be getting them from me now, mickey take or not !!!

Edited by meridian on Thursday 30th April 06:44

belfry

1,028 posts

207 months

Wednesday 29th April
quotequote all
meridian said:
..I explained that p&p via Parcel force 48 would be £12-£15 as quite heavy, and given that I needed to box up and take to Post Office suggested £30 would be fair.

He thought I was taking the p#ss. I genuinely wasn't and thought that given the opportunity the old ones would afford him, all was fair

What do you lot think ?
Let him show you some cheaper ones! It's more his loss than yours. His accumulator refurbishment isn't going to get very far if he won't pay £7.50 for failed accumulators for research purposes.

650S

154 posts

195 months

Wednesday 29th April
quotequote all
belfry said:
meridian said:
..I explained that p&p via Parcel force 48 would be £12-£15 as quite heavy, and given that I needed to box up and take to Post Office suggested £30 would be fair.

He thought I was taking the p#ss. I genuinely wasn't and thought that given the opportunity the old ones would afford him, all was fair

What do you lot think ?
Let him show you some cheaper ones! It's more his loss than yours. His accumulator refurbishment isn't going to get very far if he won't pay £7.50 for failed accumulators for research purposes.
Totally agree, he wants them - at minimum - he should expect to cover your cost to get them to him.


IainWhy

335 posts

177 months

Monday 18th May
quotequote all
meridian said:
Had a chap on Facebook who wanted the old ones, so that he could look at developing a future refurbishment/fix on worn items..

..I explained that p&p via Parcel force 48 would be £12-£15 as quite heavy, and given that I needed to box up and take to Post Office suggested £30 would be fair. After all, I have paid £800+ to enable the knackered ones to be moved on

He thought I was taking the 'mickey' I genuinely wasn't and thought that given the opportunity the old ones would afford him, all was fair

What do you all think ?

In any case, he won't be getting them from me now, mickey take or not !!!

Edited by meridian on Thursday 30th April 06:44
Tell him to get bent, not to mention https://www.autoaccumulators.com/ can do them for about £ 40 as long as the bladder is not shot, so he is barking up the wrong tree.

meridian

Original Poster:

295 posts

308 months

Monday 18th May
quotequote all
IainWhy said:
Tell him to get bent, not to mention https://www.autoaccumulators.com/ can do them for about £ 40 as long as the bladder is not shot, so he is barking up the wrong tree.
Not worried about him, I guess we all want something for nothing...

Just over the moon with the transformation the new accumulators have brought to the car, and reasonably happy with the cost having done it as cost effectively as I could utilising new accumulators..

12C is a great car, and I think good value..