Radius arm problem
- Aginley
- 998 Cooper
- Posts: 735
- Joined: Mon Aug 27, 2018 6:31 pm
- Location: York
- Has thanked: 5 times
- Been thanked: 3 times
Radius arm problem
Just rebuilt the arm and I’ve tightened it up and I have a lot of side play.
See video below.
Any recommendations chaps
https://youtu.be/ArOJZLMEVOE
See video below.
Any recommendations chaps
https://youtu.be/ArOJZLMEVOE
-
- 1275 Cooper S
- Posts: 2288
- Joined: Thu Jun 24, 2010 1:05 pm
- Location: Hiding From The Dog... NW Eng
- Has thanked: 2 times
- Been thanked: 7 times
Re: Radius arm problem
You will until it has the thickness of the subframe on the inner end and the bracket on the outer end
-
- 1275 Cooper S
- Posts: 1501
- Joined: Mon May 11, 2015 4:16 pm
- Location: Scotland
Re: Radius arm problem
Either machine the pin down, relieve the thrust washers or source a shorter pin. It could be wear on the radius arm ends particularly if it has not been well greased over the years.
There is an earlier thread about this problem.http://mk1-forum.net/viewtopic.php?f=3& ... at#p219742
D
There is an earlier thread about this problem.http://mk1-forum.net/viewtopic.php?f=3& ... at#p219742
D
-
- 1275 Cooper S
- Posts: 2288
- Joined: Thu Jun 24, 2010 1:05 pm
- Location: Hiding From The Dog... NW Eng
- Has thanked: 2 times
- Been thanked: 7 times
Re: Radius arm problem
Something doesn't look right with the outer end of the arm - there doesn't seem to be a relieved section for the rubber seal to sit around, meaning the arm could be a few mm narrower than it should be?
- Andrew1967
- 1275 Cooper S
- Posts: 7927
- Joined: Thu Jun 24, 2010 6:35 pm
- Location: Usually in my garage on the east coast of Norfolk, UK
- Been thanked: 8 times
- Bitsilly
- 1275 Cooper S
- Posts: 833
- Joined: Fri Jun 19, 2020 8:09 pm
- Location: Wales
- Been thanked: 4 times
Re: Radius arm problem
I think I have one and possibly a pair.
They are not re-conditioned though and as they came with the car as spares I don't know a lot about them.
I'll have a look tonight.
They are yours if you want them.
They are not re-conditioned though and as they came with the car as spares I don't know a lot about them.
I'll have a look tonight.
They are yours if you want them.
- Bitsilly
- 1275 Cooper S
- Posts: 833
- Joined: Fri Jun 19, 2020 8:09 pm
- Location: Wales
- Been thanked: 4 times
Re: Radius arm problem
Just before I send them to Al, this is what I told him:
The good news is they both look like the threads etc are in good nick.
The other ends are not missing that shoulder,,,BUT
One of them appears to be hollow between the holes, the other isn't?
It is like there is a pipe bridging between the holes on one, but not the other.
It may be terminal.
I know there is an early type and a later type.
Can anyone comment?
Cheers
The good news is they both look like the threads etc are in good nick.
The other ends are not missing that shoulder,,,BUT
One of them appears to be hollow between the holes, the other isn't?
It is like there is a pipe bridging between the holes on one, but not the other.
It may be terminal.
I know there is an early type and a later type.
Can anyone comment?
Cheers
-
- 998 Cooper
- Posts: 677
- Joined: Tue Mar 31, 2020 8:44 pm
- Location: The Netherlands
- Has thanked: 4 times
- Been thanked: 9 times
Re: Radius arm problem
AFAIK all rear radius arms are hollow, hence the grease tube. Some do have a metal tube fitted for the grease tube rather than the more usual plastic one. The plastic ones are a bit crap and easily broken, beware they are tapered and must be installed the right way round!
Of course I know what a dipstick is, you get called something often enough you look it up!
- Andrew1967
- 1275 Cooper S
- Posts: 7927
- Joined: Thu Jun 24, 2010 6:35 pm
- Location: Usually in my garage on the east coast of Norfolk, UK
- Been thanked: 8 times
Re: Radius arm problem
Sounds like the grease tube is missing on one of them. This fits in between the bush and the bearing.
Means when greasing you'd use a litre of grease to fill up the inside of the radius arm
Means when greasing you'd use a litre of grease to fill up the inside of the radius arm

-
- 1275 Cooper S
- Posts: 2288
- Joined: Thu Jun 24, 2010 1:05 pm
- Location: Hiding From The Dog... NW Eng
- Has thanked: 2 times
- Been thanked: 7 times
Re: Radius arm problem
What do you mean by 'between the holes'? Where the pin goes through?
If so then there should be a tube in place, either a metal one or a plastic one. If the bearing is missing it will fall out (I can't remember if it can come out of the bush end too).
No the end of the world if it is missing, assuming the arm is to be rebuilt anyway. However it does mean that the arm could be packed full of grease if the arm has been used without the tube there.
If so then there should be a tube in place, either a metal one or a plastic one. If the bearing is missing it will fall out (I can't remember if it can come out of the bush end too).
No the end of the world if it is missing, assuming the arm is to be rebuilt anyway. However it does mean that the arm could be packed full of grease if the arm has been used without the tube there.
- Bitsilly
- 1275 Cooper S
- Posts: 833
- Joined: Fri Jun 19, 2020 8:09 pm
- Location: Wales
- Been thanked: 4 times
Re: Radius arm problem
Nice one gentlemen !
There is definitely a grease tube missing.
That it is tapered makes sense.
Seems the tubes come with the rebuild kit too.
Cheers
There is definitely a grease tube missing.
That it is tapered makes sense.
Seems the tubes come with the rebuild kit too.
Cheers