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hugo7
Muc-ed-off
The cones aren’t anything exclusive. Given how pitted that one is I’d expect the cup is shot too, which makes replacement a better option if it’s a customer’s bike.
The shield isn’t built in. You can remove it by:
1- Brace the cone very gently in a vice. You don’t want to clamp the cone, you want to support the shield, as much of it as you can manage, with the flat external surface facing up.
2- Add penetrant oil of choice. Let sit a bit.
3- Using a wooden or plastic mallet, give the cone a whack. If it didn’t budge, you didn’t hit it hard enough. The trick is to knock out the cone without damaging the shield: the key is supporting as much of the shield as possible and hitting the cone squarely.
4- Press fit or gently whack the shield onto new cone if required.