Resource Center
Restore Your Filter Flow: How to Replace the Lateral Assembly in a Hayward Sand Filter
If your filter isn’t performing like it used to, the issue could be buried deep inside—literally. In this tutorial, we’ll show you how to replace the lateral assembly in a Hayward sand filter, a critical step to restoring your filtration system and keeping your pool water clean and clear all season long.
Resource Details
Key Takeaways:
1. Lateral assemblies ensure even water flow through your filter sand.
2. Always shut off water flow and power before beginning disassembly.
3. Use a sand shield or cup to protect the center pipe during sand refills.
4. Pre-fill the tank with water to cushion the laterals when adding new sand.
Step-by-Step Process:
1. Turn off the pump and close shutoff valves or use Hayward caps.
2. Remove the C-clamp and detach the multiport valve.
3. Drain water by removing the tank’s bottom drain cap.
4. Remove old sand using a scoop or shop vac.
5. Lift out the old lateral assembly; install the new one with laterals fully extended.
6. Fill the tank ⅓ with water, then use a sand shield or cup over the center pipe.
7. Slowly pour in new sand until the tank is ¾ full.
8. Reconnect the valve, align and secure the C-clamp.
9. Set the valve to “FILTER” before restarting the system.
