Troubleshooting-Gaggia-Baby-Head-Leak

From Top Of Machine

A leak from the top (or head) of the machine typically indicates a loose connection or broken part inside the machine. If the leaking is coming from between the portafilter and the grouphead then refer to the section of this article which covers changing the group gasket. Otherwise follow these steps to identify the source of the leak. It may be necessary to run the machine with the top removed in order to identify the leak.

1. Turn the machine off and unplug it.
2. Open the top of the machine. Check for any loose hoses, broken hoses or hoses with pinhole leaks, or any other fittings that are leaking. Instructions for opening the machine can be found here.
   1. If you find a loose hose reconnect it to the appropriate fitting.
   2. Hoses that are broken or have pinhole leaks will need to be replaced.
   3. Other loose fittings can typically be resecured by screwing the part down. Plumbers tape or a sealing compound may be necessary to provide a good seal.
3. Examine the boiler assembly.
   1. If there is leaking coming from between the boiler and the grouphead there are two possible causes.
      1. If there is leaking all around the edge where these assemblies meet they are not sealing properly.
         1. First try tightening the eight allen screws that secure the boiler and grouphead together. There are four allen screws at the bottom of the boiler assembly inside the machine, and the other four bolts are located externally beneath the head of the machine.
         2. If it continues to leak then the o-ring that seals these two assemblies has slipped out of place or is worn out and needs to be replaced. Try unscrewing the boiler and the grouphead by removing the eight allen screws mentioned in the previous steps. Clean the o-ring off and re-seat it and screw the boiler assembly back into place.
         3. If this does not resolve the leak then the o-ring is worn out and needs to be replaced. Replacement o-rings can be purchased here.
   2. If you find a crack anywhere else on the boiler then the machine was exposed to subfreezing temperatures without being drained properly or the machine was dropped. The boiler will need to be replaced.

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