The caps are just held on by an o-ring so they slide off, but they're quite a tight fit. I usually use pliers or mole grips with something to protect the aluminium like a bit of inner tube or a rag. It looks like you've made quite a mess of yours TBH, but you might be able to straighten it out when you get it off.
The caps are just held on by an o-ring so they slide off, but they're quite a tight fit. I usually use pliers or mole grips with something to protect the aluminium like a bit of inner tube or a rag. It looks like you've made quite a mess of yours TBH, but you might be able to straighten it out when you get it off.