So before I give it two ugga's and dugga and break it off... Anyone had an issue where their plastic brake reservoir cap was "frozen" on? Debating on heating it up since it's just plastic/rubber. It's on dico model 10 surge break setup.


Same cap/setup pictured here:

Think I would heat reservoir rather than plastic cap. Hold tension on cap with socket and tap on reservoir with a hammer, maybe the shock will let it brake loose.

I had the same issue when I checked mine after purchasing the boat years ago, I ended up having to hit the outer edge with a screw driver an hammer. I'd just go ahead and buy a new cap from etrailer or similar. It will most likely break. The newer caps have bigger hex to grab by hand.

https://www.etrailer.com/Accessories...SABEgIhiPD_BwE

If it's a HEX I would use a socket to distribute the force which worked on mine.

the O-ring is probably rusted to the housing because moisture got in or its empty

Try using a strap filter wrench.

Pretty sure it's empty due to how it was pulling.

Was it a 1" socket? Biggest I had is 7/8. Guessing it's a 1"

Your best bet is a six sided box end wrench of the correct size. Likely a cheap one from Harbor Freight will do it.

The OEM cap is either 1 1/6" or 1 1/8"
Replacement caps are even bigger, but only about $10 https://www.easternmarine.com/titan-...er-cap-4830608