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Ball Joint Shim "chart"


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#1 Tremelune

Tremelune

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Posted 28 July 2020 - 11:49 PM

This is pretty obvious, but I struggled with the arithmetic while my lizard brain was trying to keep track of which shim was which...

 

Shims come in three sizes: 0.003", 0.005", and 0.01"...You can feel which is which by bending them slightly and comparing...You can achieve any thickness within 0.001" starting at 0.008"...Basic math, but this helped my mind understand:

 

S - 3

M - 5

L - 10

 

3 - S
5 - M
6 - SS
8 - MS
9 - SSS
10 - L
11 - MSS
12 - SSSS
13 - LS
14 - MSSS
15 - LM
16 - LSS
17 - MSSSS
18 - LMS
19 - LSSS
 
Above that, just add another L and repeat the earlier pattern...I keep the thicker washer toward the top to prevent damage from the twisting nut...My new joints were between 0.020-0.025". It might be worth springing for a set of Japanese maintenance-free ball joints, but I didn't...


#2 Cooper Mac

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Posted 29 July 2020 - 10:17 AM

That’s a great guide Tremelune,

I fitted new ball joints from Mini Spares recently, which were a real pain! When I measured them with a micrometer, the shims in both sets were: 0.003, 0.006 and 0.0095”...... This was after I had removed all of the burrs!

Fortunately, I still had a stock of unused shims from years ago, so I was able to get the correct play in the end!




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