How to replace the hot stem 3G-3H for a Price Pfister double-handled faucet

SOURCE: I have a Price Pfister

If this was a new install, back off the retaining nut a half turn. Most people have a habit of overtightening.

If it has been installed for quite some time, check to make sure that the sprayer hose is not wrapped around something or wegged somehow (under the sink).

SOURCE: i have a price pfister

If this is the single-handle faucet I remember, there's a decorative hot/cold indicator on the front, a small half red/half blue circle. This pops out of the handle to reveal the retaining screw underneath. It's a hex-key (Allen key) screw but I don't remember the size. Once you've loosened the screw you'll be able to lift the handle off the faucet body to get at the cartridge housing.

SOURCE: I have a moen 7637

1) Use a small sharp-pointed knife and pop out the little plastic Moen logo at the bottom of the front side of the handle (and don't lose it!)
2) Lift the lever up a bit (the water may turn on) until you can see a small screw with an allen wrench socket.
3) Unscrew the allen-head screw; the handle will lift straight up.

Look down into the faucet; there's a philllips head screw. The leaking may simply be caused by this screw being loose.