How to Replace a Hayward Pool Cleaner Disk

Why the cleaning disk matters

A suction-side pool cleaner uses the water flow created by your main pump to move across the pool floor. The cleaning disk, a flat ring that surrounds the suction inlet, forms a seal with the floor so that water is pulled directly through the head instead of being diluted from the sides. When that seal breaks, suction drops and the cleaner begins to miss debris.

This is why a worn disk causes trouble: the cleaner may skate sideways, leave patches of dirt, or even float to the surface. Replacing the disk restores the contact between the cleaner head and the floor, allowing the unit to track correctly again. For a broader look at how suction-side cleaners operate, see our guide to suction-side cleaning.

Signs the disk is worn

Check the disk whenever you notice any of the following symptoms. These usually mean the disk has lost its shape or has developed cracks.

• The cleaner leaves visible dirt streaks or patches behind.
• The cleaner drifts to one side instead of moving in a straight line.
• You hear a loud vacuum hiss near the head, suggesting air is entering the seal.
• The cleaner occasionally floats or pops up from the floor.
• The disk shows cracks, tears, or a wavy edge when you inspect it.

Preparing for the replacement

Start by switching off the pool pump. The pump must not run while you work on the cleaner, because the unit will pull air and the pump could lose prime. Disconnect the hose from the cleaner head and lift the unit out of the water. Place it on a towel or a soft mat so you do not scratch the pool coping.

You will need the correct replacement disk, a small flathead screwdriver or a pin punch to remove the retaining clip, and a pair of work gloves. Check the model number stamped on the cleaner body or listed in the manual to confirm the right disk shape. Different Hayward models use slightly different retaining systems, so confirm the clip type before ordering or buying a replacement. Our replacement parts overview can help you think through what to look for.

Removing the old disk

Once the cleaner is on a flat surface, turn it upside down so the suction inlet faces you. Locate the retaining pin or spring clip that holds the disk in place. This is usually a small metal pin that passes through the head and through a hole in the disk.

Use the screwdriver or pin punch to push the pin out. If it is a spring clip, compress the ends and lift it free. Be gentle; bending the clip will make installation harder. After the clip is removed, slide the old disk off the head with a slight twisting motion. Inspect the head for cracks or built-up scale, and clear away any debris near the inlet. If the clip looks corroded or bent, replace it with a new one, as a damaged clip will not hold the disk securely.

Installing the new disk

Align the new disk so its center hole matches the suction inlet on the head. Push the disk evenly over the head until it seats against the flange. The disk should sit flat and rotate smoothly without any binding.

Some disks have a directional or chamfered edge, so check that the orientation matches the way the old disk sat. Reinsert the retaining pin or clip and confirm that it fully passes through the holes. If the disk wobbles, remove it and repeat the alignment. The disk must sit perpendicular to the head for the cleaner to maintain floor contact.

Testing and troubleshooting

Reconnect the hose and lower the cleaner back into the pool. Start the pump and watch the cleaner move for a few minutes. It should hug the floor and make even turns. If it still lifts or slides, check that the disk is seated correctly and that the retaining pin is firmly in place.

A persistent problem after replacement can point to weak pump flow or a hose leak. Kinks or splits in the hose allow air to enter, which breaks the seal. For more help, see our pool cleaner troubleshooting guide and our explanation of matching flow rates.

Extending the life of the disk

Disk wear is normal, but you can slow it down. Lift the cleaner out of the pool when it will not be used for a long period, so the disk is not constantly pressing against a rough plaster surface. This is especially useful for pools with aggregate finishes.

Keep the skimmer basket and the pump strainer free of leaves and debris. Heavy debris can drag under the head and accelerate disk wear. Regular cleaning of the cleaner itself, described in our cleaning guide, helps the whole unit last longer and keeps the disk working properly.

When to consider a new cleaner

If you have replaced the disk multiple times and the cleaner still leaves dirt behind, inspect the head for cracks or a bent frame. A damaged head cannot form a reliable seal even with a new disk, and continued use may scratch the pool surface.

At that point, buying a new cleaner may be a better use of time and effort. Compare current Hayward models if you want to stay with suction-side cleaning, or consider a robotic pool cleaner that does not use a disk at all.

What to pick for your cleaning setup

Questions

How often should the cleaning disk be replaced?

There is no fixed interval. Replace the disk when you see visible wear, cracks, or discoloration, or when the cleaner leaves streaks or drifts. Check the disk whenever you remove the cleaner for cleaning, and sooner if you have a rough plaster or aggregate pool floor.

Can I use any cleaning disk on my Hayward cleaner?

No. Hayward suction cleaners use model-specific disks with different diameters and retaining systems. Match the replacement to your exact model number, which is usually printed on the underside of the cleaner head or in the manual.

Do I need to remove the cleaner from the water to swap the disk?

Yes. Shut off the pump, disconnect the hose, and lift the cleaner out. Working underwater makes the job unnecessarily awkward and can introduce air into the pump, which may cause it to lose prime.

Why is my cleaner floating after replacing the disk?

A disk that is not seated correctly can trap air under the head. Check that the disk is fully seated and that the retaining pin is in place. Also inspect the hose for cracks or loose connections that let air into the system. More help is in our troubleshooting article.

Are robotic pool cleaners easier to maintain than suction cleaners?

Robotic cleaners use brushes and filters instead of a suction disk, so they do not have the same wear pattern. Many pool owners find robotic models simpler to maintain because there is no floor seal to replace. Compare robotic cleaners if you want to switch.