The plate at the end of my gearbox was caked in mud so i decided to give it a good blast with the jetwash on Sunday ... typically I have now triggered a gearbox oil leak from the `VW` plate that sits on the end of the gearbox (I think)

. Is this a common fault and whats the best way to repair it? Im thinking maybe pulling that end plate off and popping it back on with some kind of sealant on there but is that possible? Is it meant to come off without wrecking it?
Thanks for any help guys
