How to Repair Water Lines in a Motorhome

Camping out in your RV or motor home is a fun way to spend time with your family and friends. However, nothing can ruin your fun faster than a leaky water line. Two water storage tanks are mounted on the underside of your motor home -- a black water tank that runs directly to the RV's toilet and then a gray water tank. The RV's water lines run from the shower and sinks to the water heater and then to the gray water tank. These water lines can crack with age and will need replacing.

Things You'll Need

  • Wood blocks
  • Towels
  • Flash light
  • Screwdriver
  • Replacement lines
  • Putty knife
  • Towel
Show More

Instructions

    • 1

      Park the RV on a flat surface, place the emergency brake on and then place wood blocks behind the tires to prevent it from rolling.

    • 2

      Isolate the leaking water line that needs to be changed. Do this by first inspecting the water lines directly under the sink in your motor home, as this is the place where most water lines leak from. In addition, check the bathroom sink lines directly under the sink. If these lines check out okay, crawl underneath the camper and locate where the lines run both to the water heater and away from the water heater to the gray water tank. You may need to use a flashlight to check the lines underneath the motor home.

    • 3

      Use a screwdriver to remove the water line at its connection spots. Water lines are held on by a metal clamp.

    • 4

      Pull the line off its connector once you have loosened the clamp.

    • 5

      Dry the connector off with a towel and then slip the metal clamp off the old hose.

    • 6

      Use a putty knife to remove any old plumbing epoxy. Apply a small dab of fresh plumbing epoxy to the connectors.

    • 7

      Slip the clamps over the ends of the new water line you will install and then attach the water line itself to the connector.

    • 8

      Slip the clamp up over to where it fits over both the water line and the connector. Tighten the clamp screw down with the screwdriver.