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REPLACEMENT PART INSTRUCTIONS
Respirator parts should be inspected prior to each use. Replace worn or deteriorated parts with new parts.
3M
TM
Lens 7884
The lens should be inspected for cracking or crazing. Replace if necessary. Replace as follows: Remove
two screws on either side of lens with a Phillips screwdriver, remove the top and bottom lens frame and
remove the lens. To reassemble, first align the center of the lens with the centerline of the facepiece. The
center of the lens is marked by two small lines, one at the top center and second at the bottom center of the
lens. Place the lens into the facepiece and then reattach the lens frame. Replace the two center screws and
tighten.
3M
TM
Exhalation Valve Cover 7918 and Exhalation Valve 7283
Remove the 3M
TM
Exhalation Valve 7918 cover by lifting out on the two top prongs on either side of the
center opening and sliding down. Remove the exhalation valve by grasping and pulling on the edges of the
valve. Replace the valve if it is warped, distorted, cut, split or if it will not seal tightly on the valve seat.
Replace by pushing the valve onto the exhalation valve post.
3M
TM
Speaking Diaphragm Kit 7895
Remove the nose cup. Using the diaphragm removal tool, turn diaphragm retaining ring counter
clockwise and remove. Push diaphragm assembly out of the facepiece from underneath using the eraser
end of a pencil or a similar object. Check the speaking diaphragm gasket for damage or deformation. To
replace the diaphragm, follow the steps in reverse.
Note: The grill pattern with deep indentation in the center should be visible from inside the respirator.
3M
TM
Removable DIN Connector 7886
Hold the inside part of the connector secure, grasp the outside of the connector and twist counter clockwise
to remove. To replace the connector, press the inner section into the facepiece until the end of the threads
are flush with the facepiece exterior, then screw on the outer piece by turning clockwise.
3M
TM
Inhalation Valves 7282
Grasp the edges of the valve and pull away from the plastic post. Replace if the valve is distorted, cut, split
or cannot be sealed on the valve seat. If the valve seat is damaged, replace the 3M 7886.
3M
TM
Air Inlet Gasket 7999
Remove the gasket from the air inlet opening base. Replace the gasket if it is warped, distorted, cut, split or
cannot be reassembled into the air inlet. To replace, position the gasket so the small cut-out on the gasket
is pointing toward the lens. Push the gasket groove onto the plastic bar and seat the gasket.
3M
TM
Inhalation Valve Gaskets 7887
Remove the gaskets from each side of the facepiece. Replace the gaskets if they are warped, distorted, cut or
split. Replace one gasket on each side of the facepiece. Be sure the gasket is flat and seated correctly.
3M
TM
Nose Cup Valves
The nose cup valves are supplied as a complete 3M™ Nose Cup Valve Assembly 7882. Remove the nose
cup valves if they become warped, torn or otherwise damaged. Replace the valves in the nose cup such that
the post points away from the nose.
3M
TM
Cartridge Holder Gasket
Replace 3M
TM
7891 Cartridge Holder if gasket is warped, distorted, cracked or split.
3M
TM
Inhalation Port Gasket Replacement 6895
Replace if gasket is warped, distorted, cracked or split.
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