Originally Posted by dalford
Thx for the replies. I will check the piston seals. How do I see the piston on bedroom slide? Must be under bed frame?
You cylinder most likely will be under your bed.
You wont be able to visually see the piston, its in the cylinder. And you shouldn't see anything by the wiper seal on the gland nut on the end of the barrel of the cylinder that the rod passes thru.
I would test the cylinder like mentioned above but you also need to check the valve to see if its closing properly after the cylinder is extended or retracted.
It seems more likely to me a faulty valve could be the issue instead of a piston seal in the cylinder.