Fallon
Super Member
I did. It gummed up/corroded enough that the key wont's turn now. I want to pull the hitch, but will have to cut the hardened locking pin. We tow frequently, so I had just left it in there.
How best to cut that pin? Sawzall, or?
I'd try flushing it with lots of penetrating lube, let it sit a while, then more flushing. Repeat that for a day or 2 if needed & it might clear things up. WD40 is OK, but other penetrating lubes are better. It stands for Water Displacement formula #40, which a keen eye will note indicates lubrication wasn't the primary focus when it was created.
If lube fails, a cutting wheel is your next best hope, it will work better than a saw blade on hardened steel.