Bikeboy57 wrote:
I don’t normally disagree with Doug, but i have successfully rebuilt HWH slideout cylinders and locking cylinders with readily available seals and o rings. Its not rocketsurgery. The hard part is getting the cylinders out. A trick if you need to extend or retract a cylinder is to disconnect the OTHER cylinder, cap the lines, and use the extend retract button. Of course the cylinder must be disconnected from the room.
The OP states SYNCH cylinder NOT a slideout extend/retract cylinder. You have rebuilt Synch cylinders? Sych cylinders are easy to remove and reinstall. Doug