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King pin shims

  • defender2
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26 Aug 2012 14:49 #46810 by defender2
King pin shims was created by defender2
It looks as if it's possible to shim up king pins without dismantling the hub, but is it ? Anybody know?

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  • markyp2000
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26 Aug 2012 15:09 #46811 by markyp2000
Replied by markyp2000 on topic King pin shims
yer take the wheel off undo 4 bolts pop out king pin put shim in and replace all that was removed

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  • Jimnyash
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26 Aug 2012 17:28 #46816 by Jimnyash
Replied by Jimnyash on topic King pin shims
Did this the other week.

Exactly as markyp2000 says.

Needed to remove the brake caliper to get to the bolts. If I recall correctly, the bolts need tightening to 18lbft on the torque wrench. I used some blue Hylomar on the Kingpin to create a gasket when putting it back together.

The shims worked a treat. Thanks BigJimny shop!

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  • markyp2000
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26 Aug 2012 17:52 #46817 by markyp2000
Replied by markyp2000 on topic King pin shims
iv never put shims in mine but where do thay go top or bottom

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  • defender2
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26 Aug 2012 18:53 #46820 by defender2
Replied by defender2 on topic King pin shims
could be either or both, depends where the play is.

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26 Aug 2012 20:38 #46823 by facade
Replied by facade on topic King pin shims
The jimny doesn't normally need shims: the machining was done well enough that the bearings preload within tolerances when you just bolt the kingpins into new bearings.

If play develops, it is because water has got into the swivel housing, and the bottom bearing has rusted and worn, the top bearing tends to wear lines where the rollers are in the straight ahead position too.

Changing the bearings is fairly easy, and the way to go. (Unless you are selling and need an MOT pass, then you whip the calliper off and pull the top pin, and put shim washers around the pin: the pin is stepped to press on the inner bearing race, the shims move the step down. This is the opposite of landrover, where the shims have 4 holes in and lift the pin to reduce preload)

There is nothing in the manual about preload, but one way to get more preload, and reduce wheel shimmy with good bearings is to use soft copper shim washers, like in the olden days, these give a bit more preload without the hassle of continually changing the shims and checking the force to turn the swivel housing.

If it suddenly breaks, go back to the last thing that you did before it broke and start looking there :)

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