Seal MS-0698568

1. Partially dismantled machine. Took off top front allowing access to piston. Took off side bin allowing access to piston. No further dismantling necessary for seal replacement.
2. Cleaned up all parts with clean narrow paintbrushes.
3. Managed to slip on new seals with only fingers and a chopstick as tools.
4. Put all parts back together.

Disassembled the entire case to try and diagnose leak. Discovered a damaged piston seal (x2), and evidence that this was where the leak was coming from. Replacing piston seal was easy, a toothpick made it easy. Assembly was the opposite of disassembly.

You'll need a good set of torx bits and a screwdriver. I have a magnetic setup that made life easy for me. Be careful with disassembly, there is a combination of clips and bolts, so go slow and make sure you aren't missing anything. Otherwise the process was easy, and I have great coffee again.

Note: there are some videos on YouTube that go through the basic steps here. Helpful.
1. Removed the cleaning tab tray on top, which allowed me to see that water was escaping from the brew chamber.
2. Use Torx driver (T-15 and T-10 I believe) to remove all the screws for the bean hopper, and the two screws under the water reservoir.
3. Remove the top of the machine - use a flathead driver to release the two tabs in the back, being careful not to snap the plastic.
4. Pull the back and sides off from the rear of the machine, which will expose all the internals.
5. Remove the plunger with the two black rubber seals. Careful not to lose the spring assembly (piece that 'brushes' the coffee grounds chute).
6. Use a toothpick or awl to remove the old seals. Replace both with the new seals.
7. If water was getting up in the machine, it's a good idea to do a good clean while it's taken apart. I used an air compressor to blow loose coffee grounds out, and wiped down everything I could reach with a toothbrush or Q-tip. This is the only reason it took longer than 30 minutes.
8. Reverse steps to reassemble. Before putting the cleaning tab tray back on, run a few rinse cycles and watch to make sure the seals are doing their job. Worked for me.
9. Enjoy a coffee.

removed all the torx screws, disassembled the body part, removed the plunger and replaced the two seals then reassembled in the reverse order.
The leak stopped! the coffee maker is back in use.

Seal for pressure chamber rod failed. Seals for piston leaking. Had to dismantle the entire unit to get to piston rod seal and clean maachine. Water and coffee grinds throughout machine due to seals leaking.

1. Opened the machine
2. Disassembled the plunger unit
3. Removed the old, worn seals
4. Replaced with new seals
5. Reassembled the unit and machine

1. Disassembled all covers.
2. Replaced the broken seal around the piston (replaced both, even though only one was broken)
3. Reassembled it and works fine for now.

Disassembled the machine case. Unscrewed the machine head and replaced the seals. Replaced the brew head and reassembled the case.