USE ONLY HAYWARD® GENUINE REPLACEMENT PARTS
7
SERVICING
Important Safety Instructions
Please Read and Follow All Instructions Carefully
Shaft Seal Change Instructions
When servicing electrical equipment, basic safety precautions should always be observed including the following. Failure to follow the
instructions may result in injury.
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Disconnect the pump motor power cord from the power outlet before beginning the shaft seal replacement.
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Only qualified personnel should attempt to replace the shaft seal. Contact your local authorised Hayward Dealer or
service center if you have any questions.
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Exercise extreme care in handling both the rotating and stationary sections of the two-part replacement seal.
Foreign matter or improper handling will easily scratch the graphite and ceramic sealing surfaces.
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See the “Parts Diagram” on page eight (8) for the pump component locations.
Removing The Motor Assembly
1. Remove the six (6) 3/8” x 2” hex head bolts (Item #27), which hold the motor assembly to the pump/strainer housing
(Item #1), using a 9/16” AF spanner or socket.
2. Slide the motor assembly out of the pump/strainer housing (Item #6), exposing the diffuser (Item #18). Pull the diffuser
(Item #18) off the seal plate (Item #23) to expose the impeller (Item #20). (The diffuser may remain in the pump/
strainer housing. To remove, pull it straight out of the pump/strainer housing.)
Removing The Impeller
1. To prevent the motor shaft from turning, insert a 6 mm Allen Key through the centre hole in the fan cowling and into the
socket on the end of the motor shaft and hold to brace it.
2. Remove the impeller (Item #20) by rotating it counterclockwise. The spring portion of the seal assembly is now exposed.
Note carefully the position of the spring seal, remove it. Also remove the impeller ring (Item #19) from the impeller and
note the way it was installed.
Removing the Ceramic Seat
1. Remove the seal plate (Item #23) from the motor mounting plate (Item #25)
2. Press the ceramic seat with rubber cup out of the seal plate (Item #23). If tight, use a small screwdriver to tap the seal
out from the back side of the seal plate.
3. Remove the slinger from the motor shaft (Item #22).
IMPORTANT –
Clean all recesses and parts to be reassembled. Inspect gaskets and replace if necessary.
Seal, Impeller, and Diffuser Installation
1. Clean and lightly lubricate the seal recess in the seal plate (Item #23) with a dilute solution of non-granulated liquid type
soap. Gently wipe the polished face of the ceramic seal with a soft, lint free cotton cloth. Lubricate the rubber cup on the
ceramic seat and press it firmly into the recess of the seal plate (Item #23), with the polished ceramic surface facing
towards you.
2. Slide new plastic slinger onto motor shaft with tapered end pointing away from the motor.
3. Place the seal plate (Item #23) onto the motor mounting plate (Item #25), align the tabs on the seal plate with the
grooves on the motor mounting plate. The outside profile of the two parts should be the same.
4. Gently wipe the black, polished surface of the carbon spring seal assembly (Item #21) with a soft, lint free cotton cloth.
5. Clean and lubricate the impeller hub (Item #20) and press the carbon spring seal assembly (Item #21) onto the impeller
hub, with the black polished surface facing away from the impeller.
6. Screw the impeller (Item #20) onto the motor shaft in a clockwise direction and tighten snugly by holding the motor
shaft with the 6 mm Allen Key as explained earlier. Place the impeller ring (Item #19) back onto the impeller (Item #20)
with its flange facing towards the diffuser (Item #18).
7. Place the diffuser (Item #18) over the impeller (Item #20) and onto the seal plate (Item #23), aligning the arrow to the
slot in the seal plate. Give it a tap with the heel of your hand to make it lock into position on the seal plate. Ensure the
diffuser gasket (Item #17) is fitted to the outside of the diffuser (Item #18) inlet.
8. Replace the motor assembly into the pump/strainer housing in the reverse order of the removal steps. Ensure the
housing gasket (Item #16) is lubricated and tighten the housing bolts (Item #27) in a cross pattern and evenly.
