NSK Ti-Max Z800L Manuel D'utilisation page 21

10. Replacing the O-rings
Replace the O-rings if water is present in the exhaust air line. This is an indication of possible water leakage
within the coupling. ALWAYS change the complete set of O-rings.
1) Loosen and remove the taper ring at the rear of the handpiece (Fig. 18).
2) Gently remove each O-ring by hand (Fig. 19).
3) Insert the complete set of new O-rings in the correct grooves.
4) Replace and firmly tighten the taper ring.
* Refer to Spare Parts List to identify the correct parts.
CAUTION
Do not force the new replacement O-ring with excessive pressure.
When inserting new O-rings, make sure they are inserted in the correct grooves.
Make certain that the taper ring is firmly tightened. If the taper ring is loose water and air leakage
could occur.
20
(Z800L/Z800/Z900L/Z900)
Taper Ring
Fig. 18
O-ring
Fig. 19