the two small pistons work fine but the larger cylinder in the middle doesn't work. the motor sounds fine and it seems to e full of fluid. what can I check? thx, chris
it wont raise up by itself. I can manually raise it up and down even with the screw that you loosen to let it down without power is tight.. it acts like there is no fluid in the main cylinder, only the two smaller ones.
yes and yes. I have raised and lowered it manually about twenty times and it doesn't matter if the manual release valve is open or closed I can still raise and lower it manually.