
Fixing a dripping Delta Monitor shower is a common DIY task that can save you money and prevent water waste. The issue typically arises from worn-out internal components, such as the cartridge or O-rings, which can be replaced with relative ease. To begin, you’ll need to turn off the water supply to the shower, either at the shower valve or the main shut-off. Next, remove the handle by prying off the cap and unscrewing the screw underneath. With the handle removed, you can access the cartridge, which is often the culprit for leaks. Using a cartridge puller, carefully extract the old cartridge and replace it with a new one, ensuring it’s aligned correctly. Additionally, inspect and replace any damaged O-rings or seals. Reassemble the handle and test the shower to ensure the drip has stopped. This straightforward process can restore your shower’s functionality and efficiency.
| Characteristics | Values |
|---|---|
| Problem Identification | Dripping showerhead or faucet due to worn-out parts or mineral buildup. |
| Tools Required | Phillips screwdriver, adjustable wrench, pliers, Allen wrench, replacement cartridge (Delta RP19804 or similar). |
| Steps to Fix | 1. Turn off water supply. 2. Remove handle (screw or Allen wrench). 3. Pull out cartridge. 4. Replace cartridge. 5. Reassemble handle and test. |
| Cartridge Type | Delta Monitor 1300/1400 series uses a dual-function pressure balance cartridge (RP19804). |
| Common Causes | Worn-out O-rings, damaged cartridge, mineral deposits, or improper installation. |
| Prevention Tips | Regularly clean showerhead and faucet, use water softener if hard water is an issue. |
| Difficulty Level | Moderate (basic DIY skills required). |
| Time Required | 30-60 minutes. |
| Cost of Repair | $10-$20 (for replacement cartridge) + tools if not already owned. |
| Warranty Check | Delta offers a lifetime warranty on many parts; check if eligible before purchasing replacements. |
| Safety Precautions | Ensure water is turned off completely to avoid flooding or injury. |
| Additional Tips | Lubricate O-rings with silicone grease for smoother operation during reassembly. |
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What You'll Learn

Identify the Problem Source
To identify the problem source of a dripping Delta Monitor shower, start by observing the specific behavior of the drip. Determine whether the drip occurs continuously or only after the shower has been used. A continuous drip often indicates an issue with the cartridge or valve, while a drip that occurs post-use may suggest a problem with the showerhead, arm, or a worn-out component in the handle assembly. Understanding the pattern of the drip is crucial in narrowing down the potential causes.
Next, inspect the showerhead and arm for any visible signs of wear, corrosion, or mineral deposits. Remove the showerhead by unscrewing it counterclockwise and check the rubber washer or O-ring inside for damage or deterioration. If the washer is worn out, it can cause water to leak from the showerhead even when the valve is closed. Additionally, examine the shower arm for cracks or loose connections, as these can also lead to dripping. Tightening the connection or replacing the washer may resolve the issue if this is the source.
Proceed to investigate the handle and cartridge assembly, as this is a common source of leaks in Delta Monitor showers. Turn off the water supply to the shower and remove the handle by unscrewing the screw cover and lifting it off. Inspect the cartridge for signs of damage, such as cracks or mineral buildup. A faulty cartridge can allow water to bypass the valve, causing a drip. Delta Monitor showers typically use a pressure balance cartridge, which may need to be replaced if it’s compromised. Carefully examine the cartridge and compare it to a new one to assess its condition.
Another area to check is the valve body and its internal components. If the cartridge appears to be in good condition, the issue may lie within the valve itself. Look for any signs of corrosion, debris, or misalignment in the valve body. Sometimes, mineral deposits can interfere with the proper sealing of the valve, leading to leaks. Cleaning the valve or replacing internal seals may be necessary if this is the identified problem source.
Lastly, consider the water pressure and temperature settings, as excessive pressure or improper adjustments can strain the shower’s components and cause dripping. Test the shower at different pressure levels and observe if the drip worsens or improves. If the problem seems related to pressure, it may indicate a deeper issue within the plumbing system or the need for a pressure regulator. By systematically examining these areas, you can accurately identify the source of the drip and proceed with the appropriate repair steps.
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Turn Off Water Supply
Before attempting any repair on your Delta Monitor shower, it's crucial to turn off the water supply to prevent flooding and ensure a safe working environment. The process begins with locating the shut-off valves for your shower. In most homes, these valves are situated in the bathroom, often hidden behind an access panel near the shower or in the basement directly below the bathroom. If you cannot find them in these locations, check the main water shut-off valve for your home, typically located near the water meter or where the main water line enters the house. Turning off the main valve will cut water supply to the entire house, so it’s best to use it as a last resort.
Once you’ve located the shut-off valves, ensure they are clearly labeled for hot and cold water. Delta Monitor showers typically have separate valves for hot and cold water lines. To turn off the water supply, rotate the valves clockwise until they are fully closed. If the valves are stiff or difficult to turn, use a pair of adjustable pliers or a valve wrench, but be careful not to apply too much force to avoid damaging the valve handles. After closing the valves, turn on the shower faucet to release any remaining water pressure in the lines. This step is essential to avoid water spraying when you disassemble the shower components.
If your shower does not have individual shut-off valves, you may need to install them before proceeding with the repair. This involves cutting into the water supply lines and installing new valves, which can be a more complex task requiring basic plumbing skills. Alternatively, you can turn off the main water supply to the house, but remember to notify other household members to avoid inconvenience. Always double-check that the water is completely off by testing the showerhead and tub spout before starting any repair work.
In some cases, older homes may have corroded or stuck shut-off valves that refuse to close properly. If you encounter this issue, apply penetrating oil to the valve stems and allow it to sit for a few hours before attempting to turn them again. If the valves still won’t budge, consider replacing them entirely to ensure a secure water shut-off. Properly functioning shut-off valves are critical for any plumbing repair, so addressing this issue is non-negotiable.
Finally, after confirming the water supply is off, place a bucket or towel under the shower area to catch any residual water that may drip during the repair process. This simple precaution helps keep your workspace dry and prevents water damage to the surrounding area. With the water supply successfully turned off, you can now proceed with confidence to the next steps of fixing your dripping Delta Monitor shower.
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Disassemble the Shower Handle
To disassemble the shower handle of a Delta Monitor shower, begin by ensuring the water supply to the shower is completely turned off to avoid any accidental spills or leaks during the process. Locate the handle screw, which is typically hidden under a cap or button at the center of the handle. Use a flathead screwdriver to gently pry off the cap or push the button to release it, exposing the screw underneath. Once the screw is visible, use a Phillips-head screwdriver to remove it carefully, setting it aside in a safe place to avoid losing it.
With the screw removed, firmly grip the shower handle and pull it straight away from the wall. If the handle feels stuck, gently wiggle it back and forth while pulling to help loosen it from the valve stem. Be cautious not to apply excessive force, as this could damage the handle or underlying components. Once the handle is free, inspect the handle adapter or sleeve that remains attached to the valve stem. This piece may need to be removed as well, depending on the specific model of your Delta Monitor shower.
To remove the handle adapter, check if it is secured by a setscrew on the side. If present, use a hex key or the appropriate screwdriver to loosen and remove this setscrew. After the setscrew is removed, the adapter should slide off the valve stem easily. If there is no setscrew, the adapter might be threaded onto the valve stem. In this case, grip the adapter firmly and turn it counterclockwise to unscrew it. Use a strap wrench or wrap a cloth around the adapter for better grip if it is difficult to turn by hand.
Once the handle and adapter are removed, take a moment to inspect the valve cartridge and surrounding area for any signs of wear, mineral deposits, or damage. Cleaning these components can often resolve dripping issues, so use a mild cleaning solution and a soft brush to remove any buildup. Ensure all parts are thoroughly dried before reassembly or further inspection. Proper disassembly of the shower handle is crucial for accessing and addressing the root cause of the dripping issue in your Delta Monitor shower.
Finally, keep track of the order in which parts were removed and their orientation for easier reassembly. Lay out the components in a logical sequence or take photos during disassembly to serve as a reference later. This step ensures that you can efficiently put the shower handle back together after completing the necessary repairs or replacements. With the handle successfully disassembled, you can now proceed to inspect, clean, or replace the valve cartridge or other internal components as needed to fix the dripping problem.
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Replace Worn-Out Cartridge
To replace a worn-out cartridge in a Delta Monitor shower, begin by shutting off the water supply to the shower. This is typically done by turning the water valves located near the shower handle or at the main water supply line. Once the water is off, open the shower valve to release any residual water pressure, ensuring a dry and safe working environment. Next, remove the handle of the shower faucet. This usually involves prying off the handle cap (a small decorative piece covering the screw) and unscrewing the handle screw with a Phillips screwdriver. Carefully lift the handle away from the valve stem.
With the handle removed, you’ll expose the cartridge retaining nut or collar. Use an adjustable wrench or pliers to loosen and remove this nut, turning it counterclockwise. Be cautious not to damage the surrounding area. Beneath the nut, you’ll find the cartridge, which is the component responsible for controlling water flow. Pull the cartridge straight out of the valve body. If it’s stuck, you may need to use a cartridge puller tool designed for this purpose. Inspect the cartridge for signs of wear, such as cracks, mineral deposits, or deformation, which confirm the need for replacement.
Obtain a replacement cartridge specific to your Delta Monitor shower model. These are typically available at hardware stores or online. Insert the new cartridge into the valve body, ensuring it is aligned correctly and seated firmly in place. Reattach the retaining nut and tighten it securely, but avoid over-tightening to prevent damage. Once the cartridge is installed, reassemble the handle by placing it back onto the valve stem, securing it with the screw, and reattaching the handle cap.
After reassembly, turn the water supply back on and test the shower to ensure the dripping has stopped. Allow the water to run for a few minutes to check for leaks around the handle or cartridge area. If the shower operates smoothly without drips, the replacement was successful. If not, double-check the cartridge alignment and tightness of the retaining nut. Replacing a worn-out cartridge is a cost-effective solution that restores the functionality of your Delta Monitor shower and prevents water waste.
For added longevity, consider periodically cleaning the cartridge and valve body to remove mineral deposits that can cause wear. Regular maintenance can extend the life of the cartridge and ensure consistent shower performance. By following these steps, you can confidently replace a worn-out cartridge and resolve the dripping issue in your Delta Monitor shower.
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Reassemble and Test Shower
Once you’ve completed the necessary repairs to the Delta Monitor shower valve, such as replacing the cartridge or O-rings, the next critical step is to reassemble and test the shower to ensure it functions correctly. Begin by carefully placing the cartridge back into the valve body, ensuring it is aligned properly and seated fully. Gently push the cartridge into place until it stops, but avoid forcing it to prevent damage. Next, reattach the metal collar or retaining clip that holds the cartridge in position, making sure it snaps securely into the groove around the cartridge. This step is crucial for maintaining the integrity of the valve’s operation.
With the cartridge secured, reinstall the handle assembly by placing the handle back onto the valve stem and securing it with the screw provided. Tighten the screw firmly, but be careful not to overtighten, as this can strip the threads or damage the handle. Once the handle is in place, reattach the escutcheon plate (the decorative cover) by aligning it with the valve body and securing it with the screws provided. Ensure the escutcheon is flush against the wall for a clean and professional finish.
After reassembling the shower components, turn the water supply back on at the shutoff valves. Allow the water to flow through the system to flush out any debris or air that may have accumulated during the repair process. Once the water runs clear, test the shower by turning the handle to the "on" position and checking for proper water flow and temperature control. Pay close attention to ensure there are no leaks around the handle, escutcheon, or showerhead.
If the shower operates smoothly and there are no leaks, test the temperature adjustment by moving the handle through its full range of motion. The Delta Monitor valve is designed to maintain a consistent water temperature, so verify that the water heats up and cools down as expected without sudden fluctuations. If the temperature control is not functioning correctly, you may need to readjust the cartridge or check for any obstructions in the valve.
Finally, monitor the shower for any signs of dripping or leakage over the next few hours. Even a small drip can indicate an issue with the reassembly or a faulty component. If you notice any problems, turn off the water supply again and disassemble the shower to inspect the cartridge, O-rings, and other parts for proper installation. Reassembling and testing the shower thoroughly ensures that your repair is successful and that your Delta Monitor shower operates efficiently and leak-free.
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Frequently asked questions
Start by determining if the drip is coming from the showerhead or the tub spout. Turn off the water supply and disassemble the showerhead or spout to inspect the cartridge, O-rings, or seals for damage or wear.
You’ll typically need a Phillips screwdriver, adjustable wrench, pliers, and possibly a cartridge puller. Having replacement parts like O-rings or a new cartridge is also recommended.
Turn off the water supply, remove the handle and escutcheon, then use a cartridge puller to extract the old cartridge. Insert the new cartridge, reassemble the handle and escutcheon, and test for leaks.
Yes, if the issue is caused by worn O-rings or seals, you can replace those components instead. Disassemble the showerhead or spout, inspect the parts, and replace any damaged seals or O-rings before reassembling.










































