How to Replace a Sump Pump Liner

Many homeowners use a sump pump liner for drainage problems such as basement flooding. It consists of a pump and sump liner. The liner is a plastic or metal tub which is installed in a sump hole. This hole usually runs 2 feet deep into the basement floor. The pump may be located above the tub or housed within the tub. Holes in the tub allow water to flow inside which is then discharged through an attached pipe into the sewage system. If you need to drain water from your basement, the pump is an excellent tool for the job. When properly installed, it can help give you a water-free basement and create a more comfortable home. It is not uncommon for sump pumps to malfunction. This creates floods in your home. It helps if you know how to replace the pump liner.

Materials Needed

  • Replacement sump pump liner
  • Flat blade screwdriver
  • Socket wrench            
  • Chisel
  • Bucket
  • Bowl
  • Heavy duty gloves

Step 1 – Disconnect Power

It is vital that you disconnect power to the pump before you embark on your work. To handle the pump with power on exposes you to the risk of electrocution. Turn off power at the main circuit panel and post a notice to let other members of the household know of the work in progress. This will ensure that somebody doesn’t turn on the power while you’re at work.

Step 2 – Locate Pump Cover

Find the location of the pump cover on your basement floor. This is usually a dark, circular cover made of plastic. Remove any attached screws with a screwdriver. Use a flat blade screwdriver to pry the cover off the floor. Pry all round the perimeter of the cover. Once it is loose, you can lift it off the floor. If your lid is secured with bolts, use a socket wrench to remove the bolts. Unplug the sump pump power cable from the power outlet.

Step 3 – Remove the Pump

Locate the bottom hose clamp underneath the pump. Loosen the clamp to disconnect the discharge pipe. Water may flow from the check valve as you loosen the clamp. Hold the pump by the handle and lift from the pit. Place it in a basin so that any excess water can collect in the basin.

Step 4 – Remove the Tub

Lift the tub from the sump pit and place aside. It is a good idea to clean the pit before you install a new sump liner. Scoop out any standing water with a bowl. Use a chisel to scrape sludge and dirt from the pit. If your pump rests on bricks, clear all dirt from these as well. Dump the dirty material in a bucket.

Step 5 – Replace the Liner

Be sure to obtain a sump pump liner of similar size and the same voltage as your discarded one. Check the motor plate of your old pump for this information. Carefully fit the new tub into the clean pit and reinstall the sump pump. Reattach the discharge pipe to the pump.

Step 6 – Cover the Pit

Replace the cover over the sump pit and secure with the screws or bolts you may have removed at the beginning.