Repair Gerber faucets just like Delta and American Standard faucets, by replacing the cartridge inside the faucet's handle. This small part contains valves with seals made of rubber and they break down over time. Leaking results once these seals are worn. In addition, sediment blocks water flow through the cartridge. Replacing the cartridge with a brand new one, or cleaning it thoroughly, returns water flow to normal and stops existing leaks. This project takes about a half hour for experienced do-it-yourself homeowners.
Turn off the water to the faucet by closing the two water valves under the sink, or shut the home's main water line.
Take out the cap in the handle (located in the center of the handle) by lifting it out. Loosen and remove the screw under this cap. Slide handle off fixture.
Remove the dome cap (round washer under the handle) and cartridge retainer nut by turning them to the left. Grip the parts with pliers to loosen if sediment prevents them from budging.
Pull out the faucet cartridge by grasping the top of the stem and lifting it out. Use pliers to turn the cartridge left and right to loosen it, if necessary. Insert a new cartridge in its place.
Replace the cartridge nut and dome cap in that order and tighten them down by hand.
Put the handle back on the stem of the cartridge and fasten it with the screw, then replace the cap on top of the handle.