Replacing the inner mask
- Remove the pressure equalizing pad.
- Pull the inner mask 51 034-951 from the slot in the locking plate.
Inner mask is pulled off.
- Move the new inner mask over the metal holder pressure equalizing pad.
- Centre the inner mask and press the upper part of the mask collar down ensuring it engages in the mounting slot's top edge closest to the inside of the visor.
- Continue to press the inner mask's collar down in the mounting slot until the entire mask is attached.
- Check that the inner mask is fitted straight in the mask.
- Refit the pressure equalizing pad.