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-   -   Trailer brake fluid cap stuck (https://www.offshoreonly.com/forums/trucks-trailers-transportation/374870-trailer-brake-fluid-cap-stuck.html)

CharlieWhiskey85 02-20-2022 02:57 PM

Trailer brake fluid cap stuck
 
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:
https://cimg2.ibsrv.net/gimg/www.off...b4334f1162.jpg

liberator221 02-20-2022 03:31 PM

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.

Donzi1979 02-22-2022 03:07 PM

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

PA.WOODCHUCK 02-22-2022 04:46 PM

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

F-2 Speedy 02-22-2022 05:10 PM

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

Easy1 02-22-2022 06:30 PM

Try using a strap filter wrench.

CharlieWhiskey85 02-22-2022 07:41 PM


Originally Posted by F-2 Speedy (Post 4822541)
the O-ring is probably rusted to the housing because moisture got in or its empty


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

CharlieWhiskey85 02-22-2022 07:42 PM


Originally Posted by PA.WOODCHUCK (Post 4822533)
If it's a HEX I would use a socket to distribute the force which worked on mine.

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

Sydwayz 02-22-2022 09:32 PM

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

Griff 02-23-2022 01:43 AM

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


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