1. Introduction
This manual provides comprehensive instructions for the Moen 96988 Cartridge Repair Kit. This kit is specifically designed to repair the cartridge in Moen single-handle Posi-Temp tub and shower faucets. It addresses common issues such as leaks, drips, or difficulty in adjusting water temperature or flow, restoring optimal faucet performance.
2. Kit Contents
The Moen 96988 Cartridge Repair Kit typically includes the following components necessary for a complete cartridge overhaul:
- Replacement O-rings (various sizes)
- Rubber seals/skirts
- Springs
- Plastic components for cartridge assembly
- Silicone lubricant packet
Figure 1: Exploded view of Moen 96988 Cartridge Repair Kit components, including O-rings, seals, springs, and plastic parts.
Figure 2: Grouped view of Moen 96988 Cartridge Repair Kit components, showing the lubrication packet alongside the parts.
3. Safety Precautions
- Always turn off the main water supply to the faucet before beginning any repair work.
- Wear appropriate personal protective equipment, such as safety glasses, to prevent injury.
- Ensure the work area is well-lit and clear of obstructions.
- If you are unsure about any step, consult a qualified plumber.
4. Installation Instructions (Cartridge Repair)
Follow these steps carefully to repair your Moen Posi-Temp faucet cartridge:
- Turn Off Water Supply: Locate the main water shut-off valve for your home or the specific shut-off valves for the tub/shower. Turn them off completely. Test the faucet to ensure water flow has stopped.
- Remove Faucet Handle and Trim:
- Remove the screw(s) securing the faucet handle. This may be hidden under a decorative cap.
- Carefully pull off the handle.
- Remove any escutcheon plate or trim pieces to expose the cartridge housing.
- Remove the Old Cartridge:
- Identify the cartridge retaining clip (often a brass or plastic clip). Remove it using pliers or a screwdriver.
- Before pulling the cartridge, ensure the valve is in the fully open position. This helps prevent damage to the rubber skirts during removal.
- Use a Moen cartridge puller tool (recommended) to extract the old cartridge. If a puller is unavailable, carefully grip the cartridge stem with pliers and gently twist and pull.
- Inspect and Clean Valve Body:
- Thoroughly clean any debris, mineral deposits, or old lubricant from inside the valve body. A small brush or cloth can be used.
- Inspect the valve body for any damage or corrosion.
- Rebuild the Cartridge:
- Disassemble the old cartridge components. Note the position of all O-rings, springs, and rubber seals.
- Replace all old O-rings, springs, and rubber seals with the new ones from the repair kit.
- Apply a generous amount of the provided food-grade silicone lubricant to all new O-rings, rubber skirts, and any moving plastic parts. This is crucial for smooth operation and preventing leaks.
- Carefully reassemble the cartridge components, ensuring all parts are correctly oriented and seated. Ensure rubber skirts are not pinched.
- Optional Tip: To help new rubber gaskets shrink and seat properly, after assembly, you can immerse the cartridge (or just the rubberized parts) in hot water for a few minutes, then let it cool. Repeat this process once or twice.
- Insert the Repaired Cartridge:
- Ensure the cartridge is properly aligned with the valve body. The 'hot' side of the cartridge should align with the hot water inlet.
- Gently push the cartridge into the valve body. Do not force it. If it resists, check for alignment or pinched O-rings.
- Reinstall the retaining clip to secure the cartridge in place.
- Reassemble Faucet Handle and Trim:
- Reattach the escutcheon plate and trim.
- Place the handle back onto the cartridge stem and secure it with the screw(s).
- Restore Water Supply and Test:
- Slowly turn the water supply back on.
- Check for any leaks around the faucet.
- Test the faucet's operation, ensuring smooth movement of the handle and proper temperature/flow control.
5. Operation
After successful repair, your Moen Posi-Temp faucet will operate as intended. Rotate the handle to adjust the water temperature from cold to hot. The Posi-Temp feature maintains consistent water temperature even when other water sources in the home are used. Pulling the handle outwards or pushing it inwards typically controls the water flow, depending on your specific faucet model.
6. Maintenance
To ensure the longevity and continued smooth operation of your repaired faucet cartridge, consider the following maintenance tips:
- Regular Inspection: Periodically check your faucet for any signs of leaks or drips. Addressing minor issues promptly can prevent larger problems.
- Lubrication: If the faucet handle becomes stiff or difficult to turn over time, it may indicate that the O-rings require re-lubrication. Follow the cartridge removal steps to access and re-lubricate the O-rings with food-grade silicone grease.
- Genuine Parts: Always use genuine Moen replacement parts for any future repairs to ensure compatibility and performance.
- Water Quality: In areas with hard water, mineral buildup can affect cartridge performance. Regular cleaning of the faucet aerator and occasional flushing of the valve body can help.
7. Troubleshooting
If you encounter issues after repairing your cartridge, refer to the following troubleshooting guide:
| Problem | Possible Cause | Solution |
|---|---|---|
| Faucet still leaks or drips |
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| Handle is stiff or difficult to turn |
|
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| No water flow or reduced flow |
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8. Specifications
| Feature | Detail |
|---|---|
| Manufacturer | Moen Incorporated |
| Part Number | 96988 |
| Item Weight | 0.32 ounces |
| Product Dimensions | 2.1 x 2.1 x 3.2 inches |
| Item Model Number | 96988 |
| Number of Handles | 1 (for single-handle faucets) |
| Included Components | Replacement Parts or Service Kit |
9. Warranty Information
The Moen 96988 Cartridge Repair Kit is backed by Moen's One Year Limited Warranty. This warranty covers defects in material and manufacturing under normal use. For specific warranty details, terms, conditions, and to make a warranty claim, please refer to the official Moen warranty documentation provided with your original faucet or visit the official Moen website.
10. Customer Support
For further assistance, technical support, or to inquire about replacement parts, please visit the official Moen website or contact their customer service department directly. Moen's support team can provide guidance on installation, troubleshooting, and product information.
Moen Official Website: www.moen.com
