Difficulty removing single cartridge from single faucet shower
I have removed handle, chrome outer ring and retainer clip. I've tried pulling on cartridge stem but cartride will not move. Is the cartridge being stubborn due to scale or is there one more trick before really pulling on the stem??
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shut off water to shower, remove knob by popping cover off and removing screw, remove valve cover by just pulling straight out. there will be a retaining clip that holds cartridge in you will need to remove, Pull out old cartridge and replace with new.
single cartridge? pull old one, flush some water through empty valve then install new cartridge. once installed, make sure the horseshoe clip is properly inserted to keep the stem in. once the clip is in right, there is a chrome tube with a ridge that slides over the barrel and the clip. the ridge acts as the stop for the handle. also make sure there are stops inside back of handle to hit the ridge on the chrome tube. the plastic inside the handle may break off allowing the handle to spin. the stem unit/cart may also be installed 180 degrees out of place. pull the lock clip and use the remover tool that came with new cart to rotate it 180 degrees with water supply turned off.
If it's like mine, there's a corrugated plastic ring just behind the handle that turns. Pry it back, it releases with clips, and remove the set screw. Once you unscrew it, pull the handle off, then remove the screws for the backing plate which are hidden behind another, clip on shield. You can then get to the two outer and four inner screws that hold the covers over the cartridge assembly which just pulls out. Of course, be sure your water is turned off during all of this.
Moen faucets have only one moving part. The stem slides up and down to open and close the faucet and rotates to regulate the flow of hot and cold water. Any leaking requires replacement of the cartridge. First, turn off the water. To remove the cartridge, you'll need to remove the handle. This project can be like working a puzzle. If you have the manufacturer's instruction sheet for the faucet, you're ahead of the game. Without it, look for a retainer clip at the rear of the faucet just below the handle. Or, you may have to remove a set screw or snap-in "hot-cold" button and a handle pin or screw. On some faucets the swing spout must come off first. The retainer clip may be hiding beneath the handle inside a lift-out tube. Some cartridge faucets use two retainer clips–one by the handle and another by the cartridge. Retainer clips can be pried out with a screwdriver. Once the retainer clip is removed, the cartridge simply pulls out. Use pliers, as shown in Fig. 6. Install the new cartridge by pushing it into place with the flat arrow, or other mark upward. If you use a lubricant on the cartridge, make sure it's silicone grease. Check and clean the cartridge inlet ports. Before you button up the faucet turn the water back on for a minute to flush out the supplies. I had to look for this answer, hopefully this will work for you.
Remove the shower control handle. If the cartridge is threaded there will be a nut on the top. Remove with a crescent wrench. If there is no nut then there will be a retaining clip and the cartridge will then pull straight out. Installation is the reverse procedure.
You are on the right track. You have to use some force when pulling the stem from the faucet. Your replacement cartridge should have a little black or whit cap. that is inserted on top of the cartridge and by turning the cap will help loosen the whole cartridge
You need to pull and replace the cartridge on your shower valve most likely. It varies by Make and Model, but generally, remove the handle, remove any sleeve around the center spine, remove the round trim plate, close the service stops, remove the retaining clip or ring, and pull the cartridge straight out of the valve body by pulling on the spline... or get a cartridge puller. Then take your cartridge to the store and get a new one. Flush the valve body by slightly opening both service stops and then install the new cartridge and reverse the process.
Generally this problem occurs when sediment has torn part of the sealing o ring on the cartridge. If you send me the make/model and/or a picture I will give you the specific instructions
You may have debris caught in the cartridge. I'm not sure which faucet you have but if it utilizes a ball, there is a retaining ring that is either grey or white that you have to tighten. If not, I would recommend contacting American Standard. You might have a bad cartridge or missed replacing another part. Sometimes they have small round washers at the back of the housing that need to be replaced as well.