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Lower Arms - Rod Ends/tie Rods Mot


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#1 Bumfarto

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Posted 04 May 2021 - 08:19 AM

Chaps, 

 

Took the car for MOT last week and it failed on movement between lower arms and tie rod clevis.

 

Currently the car is running adjustable lower arms with rod ends inboard.

These rods ends obviously allow an extra degree of freedom over the bushed version, the arm being free to rotate round it's own axis (rod end inboard/ball joint outboard).

 

The only thing restricting this rotation is the clevis of the tie rod. Given the clevis isn't very deep/long and uses a single clearance fit bolt, there will always be some movement.

It's this movement the tester is objecting too.

 

Has anyone else encountered this issue? Should I simply fit a set of bushed arms for the test?

 

Many thanks.



#2 whistler

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Posted 04 May 2021 - 08:30 AM

The bolt that goes through the tie rod fork and lower arm is shanked so there should be no play when fully tightened. that's my experience with both fixed and adjustable tie rods. Perhaps you don't have the correct shanked bolt fitted.



#3 imack

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Posted 04 May 2021 - 08:32 AM

From your description I presume you are talking about movement at the bolt circled securing the tie bar to the lower arm.
There should not be any movement at that bolt.

Attached Files



#4 nicklouse

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Posted 04 May 2021 - 08:45 AM

Sounds like an incorrect bolt has been fitted.



#5 Bumfarto

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Posted 04 May 2021 - 08:49 AM

Correct. There is slight movement at the bolt in the photo above. I have new bolts arriving so hopefully all will be ok once fitted. There could be some wear in the lower arm drilling if it's been moving around. (I've not owned the car long and this is the first MOT I've needed.



#6 nicklouse

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Posted 04 May 2021 - 08:51 AM

Where are the bolts coming from? Link?

 

wear. You will be able to check when the new ones are fitted.

 

you do have a ball joint splitter so you can remove a d fit the bolt correctly?



#7 Bumfarto

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Posted 04 May 2021 - 09:05 AM

I have new ball joints and bolts coming from MiniSpares. I stripped it all off and the lower joints were fine but at the end of their life (no shims fitted) so I opted to replace. It may be I need to weld up the hole in the lower arm and re-machine it. 



#8 nicklouse

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Posted 04 May 2021 - 09:11 AM

I have new ball joints and bolts coming from MiniSpares. I stripped it all off and the lower joints were fine but at the end of their life (no shims fitted) so I opted to replace. It may be I need to weld up the hole in the lower arm and re-machine it. 

 No shims does not mean end of life. It just means no shims were needed.  You should not re-shim to take our wear.






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