For three hours, Earl had been chasing a ghost. A wet spot had bloomed on the linoleum near the toilet—not black water, thank the Lord, but fresh. Clean. Somewhere inside the belly of his home-on-wheels, a PEX fitting was weeping. The problem was, Keystone didn’t build RVs like houses. They built them like puzzles. Walls were sandwiches of thin luan and styrofoam. Pipes snaked through uninsulated underbellies, behind false panels, and around holding tanks you couldn’t see without a creeper and a flashlight.
He bookmarked the page. Tomorrow, someone else would need it.
Black lines traced the fresh water from the city inlet, through the check valve, past the water pump (the winterization tee clearly marked), then up to the hot water heater bypass. Red for hot, blue for cold. Dashed gray lines showed the drains: P-traps, gray tank #1 (galley), gray tank #2 (shower/sinks), and the dreaded black tank with its 45-degree elbow that Keystone had installed backward for three model years—his included.
Keystone rv plumbing diagram.
He hit enter.
He grabbed his multi-tool, a headlamp, and a roll of rescue tape. At midnight, he cut a neat square in the thin panel inside the linen closet, just as the diagram showed. And there it was: a crimped PEX ring on a cold-water line, weeping a silver tear every three seconds.