Step 3 · Remove Old Faucet Trim
On the shower side, remove the old faucet trim. Pry off the caps on the handles to expose the screws. Use a screwdriver to remove the screws and pull the handles off. You may need a handle puller if they are corroded and stuck. Next, unscrew the chrome sleeves (escutcheons) from the wall. Finally, unscrew the tub spout. If it doesn't unscrew, it may be a slip-on type secured by a small set screw on the underside; use an Allen wrench to loosen it.