Step 7 · Reassemble the Faucet
Follow your disassembly steps in reverse. First, thread the packing nut back over the new cartridge and tighten it with your adjustable wrench or channel-lock pliers. Tighten until it is snug, but do not overtighten. Next, slide the faucet handle back onto the cartridge stem, aligning it correctly. Re-insert and tighten the set screw using your Allen wrench or screwdriver. Finally, press the decorative cap firmly back into its place on the handle.