I have a 2011 F-350 with the under bed puck style hitch with an 18K Reese Signature Hitch.
If you look through the two (2) holes on the top of head on either side of the Jaw you will see two (2) hairpin clips.
Always look to see that these are in place before you tow, or the (L) shaped pins could come off while towing and you loose your trailer.
If you pull these off the (L) shaped 1/2" diameter pins, then remove the pins the head will come off.
This makes it into a (2) piece hitch for easy removal.
Total weight of hitch is around 150#
While you have this apart, you can clean and lubricate the places underneath.
I take mine apart, clean and lubricate it twice a year.
I use wheel bearing grease on the inside movable head arms and where the springs contact, and White Grease on the Center Pivot pin and a little Silicone Spray on the Rubber Bumpers.
This job is easy and takes me about 45 minutes to do, because I've done it so often.
That includes me pulling the hitch out of the bed of the truck and cleaning and lubing the pucks and connecting arms on the hitch.
The King Pin also gets cleaned and greased.
There is also one (1) zerk fitting on the top of the head that needs to be greased with a grease gun.
This hitch works perfect, and I love it.
Remember "an ounce of prevention is worth more than a pound of cure".
Hockster