JRscooby wrote:
I have cut off and replaced some couplers, but a 10 year old trailer? Sounds like a lot of abuse, or more likely neglect. If it was mine, I would first spray it with WD-40, and see if it loosened. (Yes, there is better stuff, but most people have a can around) Most likely it will work better, and that will tell you to save some money. Remove the guts, clean up rust and caked lube. Re-lube, put back together, and adjust.
BTW, if it is abuse, instead of neglect, might look at replacing with a eye, instead of coupler.
I take good care of it. I keep a log it has been towed just over 50,000 miles. In fact it has been a really good trailer. I did have to replace one axle as the spindle was off a bit, but other then this it has been small things. No leaks, just normal maintenance. It does not look like I can remove the guts. I see no fastener. My complete life is based off submarine maintenance. So I am pretty good at keeping up with it. It is also parked inside. I think the spring is broke but I can't tell.