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Swivel preload... cheekily robbed from a previous post by Saint V8...
The steering hub on the RRC is fitted to a chrome ball using two pins (Swivel Pins) top and bottom which allows the hub assembly to turn.
The pins are adjusted by fitting different thickness and number of shims to either raise or lower the pins inside the bearing housing that the hub assembly rotates on....the more shims the looser the preload is and the less shims the tighter the preload.
You have to get the preload correct to stop the hub from rocking and moving around under load and for the steering to not feel to loose and slack.
If they are too tight the steering will not self-centre correctly and will become outright dangerous to drive.
You set the preload, by disconnecting the steering links to the swivel houseing and then using a spring balance (I use a small fishing scale from an Angaling supplier that read to the amount required) to pull the swivel housing to see how much force is required to move it....add and remove shims as necessary until the force to mve is correct.
I can't remember if you have to have the brake disck and caliper removed for this as when i did it it was all taken apart anyway to replace all the swivel housing seals.
It is wise to replace the swivel bearings that the swivel pins fit into whilst it is all apart, and replace the pins too as inevitably they will be worn too.
Not a hard job just a bit fiddley at times, make sure you get the right pins though as some models have the ABS sensor and some don't.
The steering hub on the RRC is fitted to a chrome ball using two pins (Swivel Pins) top and bottom which allows the hub assembly to turn.
The pins are adjusted by fitting different thickness and number of shims to either raise or lower the pins inside the bearing housing that the hub assembly rotates on....the more shims the looser the preload is and the less shims the tighter the preload.
You have to get the preload correct to stop the hub from rocking and moving around under load and for the steering to not feel to loose and slack.
If they are too tight the steering will not self-centre correctly and will become outright dangerous to drive.
You set the preload, by disconnecting the steering links to the swivel houseing and then using a spring balance (I use a small fishing scale from an Angaling supplier that read to the amount required) to pull the swivel housing to see how much force is required to move it....add and remove shims as necessary until the force to mve is correct.
I can't remember if you have to have the brake disck and caliper removed for this as when i did it it was all taken apart anyway to replace all the swivel housing seals.
It is wise to replace the swivel bearings that the swivel pins fit into whilst it is all apart, and replace the pins too as inevitably they will be worn too.
Not a hard job just a bit fiddley at times, make sure you get the right pins though as some models have the ABS sensor and some don't.
