The repair of a leaking Price Pfister faucet begins by shutting off the main water line. Insert a drain stopper to prevent smaller parts from falling off. Remove the faucet handle, and loosen the collar near the faucet base. Remove the entire faucet and check the O-rings inside the stem assembly and those around the collar base. Replace all worn out O-rings with new ones from the Pfister repair kit.
Ensure the faucet is off before beginning the repair process. Use a drain stopper to prevent the draining of small parts and unscrew the faucet handle using an Allen wrench. Wrap a rag around the faucet collar before you start loosening it using a wrench. The rag protects the surface coating of the faucet collar against scratches during the loosening process. Unscrew the nut, retaining the stem assembly, and pull out the entire assembly.
The cause of most leaking faucets is faulty O-rings, so check the O-rings inside the stem assembly and those around the collar base. Remove the O-rings found in the stem assembly and check for abrasions, marks or tears. Replace all worn out O-rings with new ones from the Pfister repair kit. Remove the springs inside the stem assembly with needle nose pliers, and replace the worn-out springs if necessary. The final step is reassembling all parts, turning the water on and re-checking for leaks.