Dometic 4809, 4806, 4848 Troubleshooting Guide cont’d, Replacing the flush ball seal and bowl seal

Troubleshooting Guide (cont’d)

Replacing the flush ball seal and bowl seal

1.Turn off water and electrical power to toilet.

2.Remove water inlet hose from toilet.

3.Remove toilet from floor and turn it upside down. Disconnect Service Switch wires at

in-line connectors.

4.Remove three nuts and flat washers securing base assembly to toilet bowl using a 1/4-inch drive ratchet wrench, 7/16-inch deep-well socket and extension.

5.Pull check valve out of the sealing grommet located in rear of toilet bowl.

6.Lift base assembly from toilet.

7.Replace old seals with a complete seal kit.

8.Reconnect base assembly to toilet with new mounting bolts (L-shaped) included with seal kit. Tighten nuts to 20-25 in.-lbs. torque.

9.Reconnect Service Switch wires. Reattach water inlet hose to toilet.

10.Reinstall toilet to floor.

Replacing the flush ball

1. Turn off water to toilet.

2. Open flush ball in Service Mode, then turn off power to toilet.

3.Disconnect water inlet hose.

4.Remove toilet from floor and turn upside down, and disconnect Service Switch wires at in-line connectors.

5.Pull check valve out of sealing grommet located in rear of toilet bowl.

6.Remove three nuts and flat washers securing base assembly to ceramic toilet bowl using a 1/4-inch drive ratchet wrench, 7/16-inch deep-well socket and extension.

7.Lift base assembly from toilet.

8.Remove bowl seal, flush ball seal, and retainer plate to expose flush ball.

9.Loosen set screw in the rotor shaft cam using a 1/8-inch hex tool.

10.Remove the #8 x 1/4-inch long screw and flat washer from linkage slot.

11.Remove the four screws securing the mounting bracket to base.

12.Pull mounting bracket and rotor cam off base.

13.Rotate flush ball forward and remove flush ball retaining screw.

14.Replace flush ball and reverse disassembly through step 10.

15.Push rotor cam all the way onto rotor shaft. Tighten set screw.

16.Lubricate moving parts with silicone grease.

17.Before reassembling entire toilet, the cam switch may require adjustment. See “Adjusting The Cam Switch” on page 14.

Replacing the rotor shaft

1.Follow disassembly steps 1 through 14 under “Replacing the Flush Ball”.

2.Pull rotor shaft out from inside of the base.

3.Lubricate O-rings on new shaft with silicone grease.

4.Align flat section on rotor shaft with flat section in cam during assembly. Push rotor shaft cam fully onto rotor shaft. Tighten set screw.

5.Lubricate moving parts with silicone grease.

6.Reverse the disassembly procedure.

7.Before attaching base to toilet, the cam switch may require adjustment. See “Adjusting The Cam Switch” on page 14.

Replacing the rotor shaft cam

1.Follow disassembly steps 1 through 14 under “Replacing the Flush Ball”.

2.Remove linkage pin clip and pin.

3.Attach new rotor shaft cam to linkage using pin and clip.

4.Lubricate moving parts with silicone grease.

5.Reverse the disassembly procedure.

6.Before attaching base to toilet, the cam switch may require adjustment. See “Adjusting The Cam Switch” on page 14.

Replacing the motor drive arm

1.Follow disassembly steps 1 through 11 under “Replacing the Flush Ball”.

2.Remove the four motor mounting screws.

3.Remove the motor from the mounting bracket.

4.Loosen the Drive Arm set screw using a 3/32-inch hex tool, then remove old Drive Arm.

5.Install new Drive Arm and push onto motor shaft as far as possible. Tighten the set screw.

6.Lubricate moving parts with silicone grease.

7.Reverse disassembly procedure.

8.Before attaching base to toilet, the cam switch may require adjustment. See “Adjusting The Cam Switch” on page 14.

Replacing the drive linkage

1.Follow disassembly steps 1 through 13 under “Replacing The Flush Ball”.

2.Remove linkage pin clip and pin at rotor shaft cam.

3.Remove the flush spring retaining screw and washer from the retaining post.

4.Remove the flush spring from the old linkage.

5.Insert the flush spring into the new linkage and reattach the spring to the retaining post.

6.Attach linkage to rotor shaft cam using pin and clip.

7.Lubricate moving parts with silicone grease.

8.Reverse the disassembly procedure.

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