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Replacing Bushes on Rear Hydro-elastic Subframe
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Author:  bharp831 [ Tue Sep 01, 2020 12:25 pm ]
Post subject:  Replacing Bushes on Rear Hydro-elastic Subframe

Hi All

Has anyone replaced the rear subframe bushes with the subframe still in place?

My rear subframe bushes have deteriorated and I need to replace them on my hydro-elastic mini S. Got the parts and then realised there were a lot of unknowns. Looks like I have to remove the fuel tanks to get to the bolts of the rear bushes and also the bolt through the front set of bushes won't come out without dropping the subframe down at least 5 cm and also dismantling the rear suspension arm. I am not keen on re-pressurising the suspension, so looking for some insights on how to do it with the subframe in place or displaced slightly .

bharp831

Author:  simon k [ Tue Sep 01, 2020 2:28 pm ]
Post subject:  Re: Replacing Bushes on Rear Hydro-elastic Subframe

I think you're out of luck. The subframe will drop down enough to get the rubbers out, but getting to the front rubbers is your problem...

(Happy to be corrected) but can't get to the nut on the inside of the front pin without taking out the radius arm, you can't take the radius arm out without depressurising the system

making a hydro pump is really simple though... you just need a good quality clip or screw on schrader valve attachment and a grease gun or an old brake master cylinder & pedal box.

If you plan on owning a hydro car ongoing, having a pump is really handy - I use mine once or twice a year

Author:  bharp831 [ Wed Sep 02, 2020 12:40 pm ]
Post subject:  Re: Replacing Bushes on Rear Hydro-elastic Subframe

Thanks Simon K, appreciate your feedback. Looks like I need to look for a pedal box.

Bharp831

Author:  winabbey [ Wed Sep 02, 2020 1:23 pm ]
Post subject:  Re: Replacing Bushes on Rear Hydro-elastic Subframe

bharp831 wrote:
Looks like I need to look for a pedal box.

Surely there's someone from Minis in the Gong who can loan you a pump, or drop by to pump it up when needed? If you don't intend working on hydro suspension regularly that may be quicker and cheaper than making or sourcing your own pump.

Try timmy201 for a starter.

Author:  bharp831 [ Wed Sep 02, 2020 1:36 pm ]
Post subject:  Re: Replacing Bushes on Rear Hydro-elastic Subframe

Thanks Winabbey
A search of the minisinthegong forum shows timmy201 has one, but as Simon k said, if I am going to keep this as a hydro suspension, might be worthwhile making one up. Will contact timmy anyway

Author:  timmy201 [ Wed Sep 02, 2020 3:06 pm ]
Post subject:  Re: Replacing Bushes on Rear Hydro-elastic Subframe

I don’t have one, but if you contact PhillB on here he might be able to help you out

Or Graeme Lord Automotive

Author:  bharp831 [ Wed Sep 02, 2020 5:29 pm ]
Post subject:  Re: Replacing Bushes on Rear Hydro-elastic Subframe

Thanks timmy. I have also found an old posting about how to make one, so got a couple of options

bharp831

Author:  Bill B [ Wed Sep 02, 2020 7:58 pm ]
Post subject:  Re: Replacing Bushes on Rear Hydro-elastic Subframe

Have sent bharp831 a pm offing to help with a pump. From his comments, he may not have got the pm?

Author:  bharp831 [ Fri Sep 04, 2020 7:27 am ]
Post subject:  Re: Replacing Bushes on Rear Hydro-elastic Subframe

Thanks Bill, didn't know about PMs so missed your message. Thanks for your help again

Author:  phillb [ Sat Sep 05, 2020 8:46 pm ]
Post subject:  Re: Replacing Bushes on Rear Hydro-elastic Subframe

bharp831 wrote:
Thanks Bill, didn't know about PMs so missed your message. Thanks for your help again


PM sent. I started with a grease gun type but is slow and messy. I made this one out of a pedal box ...much better. A lot of people use a plumbers test pump which are a neat solution too.

You are welcome to borrow mine to use or see how it's made.

Attachment:
IMG_3671.jpg

Author:  bharp831 [ Mon Sep 07, 2020 11:30 am ]
Post subject:  Re: Replacing Bushes on Rear Hydro-elastic Subframe

Thanks so much Phill, will get in touch.

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