How To Replace the Navigator Pool Cleaner Main Turbine Bearings

TOOLS YOU WILL NEED -
1) Phillips screwdrivers- small and medium.
2) A work area where you can spread out. TIP: It is very important that you are careful when taking this apart. If you lay all the pieces out in a row as you remove them, it will be easier to put back together.
3) Three small Tupperware or paper bowls to put parts and small pieces in. Label them #1 – #3 with a magic marker.

REVIEW PARTS LIST - Here is a parts list for the inside of a Hayward Navigator Cleaner. For a larger parts list click here Navigator Part List. The Main Turbine Bearings are shown on the left side of the picture. To order these bearings see Main Turbine Bearings.

REMOVE COVER ASSEMBLY -  Turn the Navigator upside down and remove the Cover Assembly in the center. The screw will not come out all the way but you should be able to lift it out.

REMOVE CORNER SCREWS - Remove the four corner screws that hold the Middle Body and Lower Body together. You may have to hold the front flap back to access the front screws. Put the screws and plug into the #1 container.

SEPARATE MIDDLE BODY AND LOWER BODY - Pull the two sections apart. Once apart, they will look like this; the Middle Body on the left; and the Lower Body on the right. Set the Lower Body aside.

REMOVE BUMPER SCREWS - Returning to the Middle Body, remove the four screws on the bumper and put them in container #2.

REMOVE BUMPER - Lift off the bumper and set it aside.

SPLIT MIDDLE BODY - We will now divide the Middle Body into its two sections: the Lower Middle Body and the Upper Middle Body. Remove the two screws, as shown on the picture, and put them in the same container. They are smaller than the others, so remember that when putting it back together.

SEPARATE MIDDLE BODY SECTIONS - Gently lift the Lower Middle Body away from the Upper Middle Body and turn it over. The names seem off, but remember that the Navigator is on its back. If the Navigator was placed right side up, this Lower Middle Body would be on the bottom.

INSPECT LOWER MIDDLE BODY - When you turn the Lower Middle Body over it should look like this. Sometimes the little red 3/4 circle show here (the Spinner) and the Main Turbine fall off their mountings and end up in the other section. Remember this when you are putting the two sections back together. Carefully lift out the red Spinner and the white washer that's behind it and put them in container #3.

LIFT OUT MAIN TURBINE - Lift the black Main Turbine and and Bearings out of their cradle. NOTE: The ends of the Main Turbine and the Middle Body Assembly have L & R letters for left and right. When you put it back together, it is important that they go back together like this.

REMOVE BEARINGS - Slide the two Bearing off of the Main Turbine

REPLACE BEARINGS - Slide the new Bearings onto the ends of the Main Turbine. The bearings have a little slot in them that has to line up with the ridge on the Main Turbine Shaft.

Put the Main Turbine back into its slot in the Lower Middle Body. Remember to match up the  LEFT and RIGHT markings on the Main Turbine and Lower Middle Body Assembly.

REPLACE RED SPINNER - If the Red Spinner and washer fell off in disassembly, replace them. From container #3 put the white washer around the small square of the Gear Box and the red spinner on top of that (it doesn’t matter which way it faces).

COMBINE MIDDLE BODY - Put the Middle Body back together by placing the Upper Middle Body on top of the Lower Middle Body. This can get a little tricky because the Rear Screen slips into little grooves. Be sure to place the Upper Middle Body on top of the Lower Middle Body to keep the Spinner from falling off its post.

SECURE MIDDLE BODY SECTIONS - Hold the sections together and carefully turn the combined Middle Body over and secure it using the two smaller screws from container #2. DO NOT put the last four screws in yet. They secure the Bumper in the next step.

REPLACE BUMPER - Put the Bumper on top of the Middle Body using the remaining four screws from container #2.

JOIN LOWER BODY TO MIDDLE BODY - Put the Lower Body back on taking care that the black wheels fit snuggly on the outside of the turbines. DO NOT FORCE. It should just drop in but you may have to wiggle it a bit.

REPLACE CORNER SCREWS - Use the screws from container #1 and secure the Lower Body to the Middle Body.

REPLACE COVER ASSEMBLY - Replace the Cover Assembly and sequre it with the single screw.

TEST GEARS - Turn the Cleaner upright and with the top of the cone gear protruding from the top of the vacuum, pull up on it and turn it. You should hear a nice slow spinning sound coming from the Navigator. If you hear any kind of crunchy sounds or the mechanism doesn’t sound right, then you did something wrong and will have to take it apart (that’s how I leaned!). However, before doing so, put it in your pool and see how it works.