Things You'll Need
Eljer cartridge replacement kit
Eljer faucets repair by replacing the cartridge inside the handle, a common repair to many brands of shower faucet. This fix solves leaks, inconsistent water temperature or low flow rates. A plumber is not needed for this repair, all it requires is a replacement kit for the Eljer faucet and a few basic skills. If you know how to use a screwdriver or a pair of pliers, you already have most of the knowledge necessary to do it right.
Shut the valves to the main water line, located near the water heater.
Loosen and remove the screw under the lever on the Eljer shower faucet with an Allen wrench. Pull off the handle by sliding it back off the cartridge stem, which protrudes from the escutcheon cap.
Take off the escutcheon cap set and escutcheon (shower faucet trim) by removing the screws in the side of the trim. The cartridge is located under this part.
Take out the screws in the cartridge with a screwdriver and slide the cartridge out by gripping the stem and pulling gently. If stuck, grip the stem with pliers and twist it side to side; then, remove.
Insert the new cartridge into the fixation ring by lining it up properly so the grooves match and pushing it into place. Insert and tighten the screws.
Replace the escutcheon trim and cap and tighten the screws. Slide the handle on and insert and tighten the handle screw with the Allen wrench.