It can also develop deposits on the cartridge that prevent the water from shutting off completely. Removing the Stanadyne cartridge can be done in about a half hour using some basic shop tools.
Things You Will Need
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Turn off the water at the shut off valve at the water main before attempting to remove the Stanadyne cartridge.
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Loosen the hex screw on the underside of the shower handle with an Allen wrench, and remove the shower handle.
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Unfasten the screws holding the shower handle cover plate to the wall with a screwdriver, and remove the plate from the wall.
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Unscrew the handle adapter from the shaft by hand, and remove the adapter.
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Loosen the faucet escutcheon by unscrewing it by hand from the Stanadyne cartridge, and take the washer and limit stop off the cartridge.
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Take the retaining clip off the cartridge using a pair of pliers, and place the white plastic removal tool from the cartridge removal kit over the top of the cartridge stem.
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Turn the cartridge using a pair of pliers until the stem works loose, and pull the Stanadyne cartridge out of the valve.
The Drip Cap
- The Moen/Stanadyne cartridge is the part of the shower valve that is designed to open the valve and let the water pass through the pipe into the shower head.
- Loosen the hex screw on the underside of the shower handle with an Allen wrench, and remove the shower handle.
- Turn the cartridge using a pair of pliers until the stem works loose, and pull the Stanadyne cartridge out of the valve.
Check out this related video from Homesteady on Youtube.