Bobcat T190 is eating hydraulic couplers

p0rterhouse

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Joined
Aug 27, 2025
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My brother's Bobcat T190 has a mystery problem. The lower female hydraulic coupler started leaking, so he swapped it out. No big deal, right?

Except the new one started dripping almost immediately! He went to a different dealer, got another brand new coupler, and that one's doing the same thing!
He's using a newer grapple with good flat face couplers, and he's totally stumped.
Has anyone else seen this happen? Why would a brand new OEM coupler start leaking like that, let alone two in a row?

It feels like something else is going on here, all advice is welcome!
 
Okay, one coupler may be bad, but multiple can be a problem. Is he sure that it's leaking from there?
 
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