- Remove the mandible from main body of the skull by lifting the skull straight up off the rami. Set the mandible aside; no further disassembly of the mandible is necessary.
- This will expose a tab on the underside of each zygoma, just under the arch where it meets the temporal bone. Press the tab inward, which will release the zygoma. Repeat for the other zygoma.
- Inside the depression left by each zygoma is a small circular indent. With the thumb and index finger, press each indent inward at the same time. This will disengage the facial assembly.
- The facial assembly consists of the nasal bones (2), the lachrymal bones (2), the palatine bones (2), and the maxillary bones (2). Slide the facial assembly down. It should detach as a unit.
- Rotate each palatine bone 90° outward from the center and lift them out of their latches.
- Lift off each of the nasal bones. Note they slide off easily on rail-like tabs on the upper portions of the maxillary bones.
- This will allow the maxillary bones to separate. Simply twist them apart at the philtrum.
- Although not strictly necessary for general cleaning, the lachrymal bones can be removed. Simply lift each lachrymal bone from its rail-like tab on the maxillary bones exactly as you did with the nasal bones.
- Press your thumb into the nasal cavity until you hear a click. The frontal bone will now swing upward and off the skull. Set it aside.
- Holding the edges of the sphenoid bone (in red ), lift it up and out from the frontal cavity. It lifts straight up. Use caution, as the sphenoid is delicate.
- The ethmoid bone will now simply lift off its base.
- Removing the ethmoid now allows you to lift the vomer up and out of the nasal cavity.
- Turn the ethmoid bone over; the inferior nasal conchae should drop easily into your hand. A little shake may be required, particularly if the conchae have become soiled with dirt or grease.
- Swing each of the styloid processes up until you hear a click. Lift each temporal bone off the side of the head.
- Remove of the temporal bones will reveal two tabs, one on each side of the parietal bones. Depress each tab to release the parietal bones from the occipital bone. The two parietal bones are hinged together at the sagittal suture: simply open them up fully and separate them at this hinge.
- The occipital bone has no additional parts. No further disassembly is required for maintenance.
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