To remove a shower bar cartridge, you'll generally need to remove the handle first, which involves finding and removing a grub screw.
Here's the breakdown:
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Locate the Grub Screw: The shower handle is usually secured to the valve stem with a small setscrew (grub screw). This screw is often hidden, so look carefully on the handle's side or underneath.
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Remove the Grub Screw: Use the correct size Allen key (hex wrench) to loosen and completely remove the grub screw. The video mentioned provides an Allen key, but if yours is missing, you will need to find one that fits properly.
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Pull off the Handle: Once the grub screw is removed, you should be able to pull the handle straight off the valve. It might be a bit stiff if it hasn't been removed in a while.
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Remove the Brass Log (Escutcheon): After removing the handle, you'll likely see a brass escutcheon or trim piece. This needs to be removed to access the cartridge. The method will vary depending on the specific model, but it often involves unscrewing it.
After this stage, you will be able to access the cartridge itself.
