TM 5-4220-225-14
4-22.  Diffuser Assembly.
This task covers: 
Replace
INITIAL SETUP:
Tools
Reference
Padded, Curved Jaw Pliers (Item 26, Appendix B)
Para.  4-11 General
Materials/Parts
Diffuser Assembly
Halocarbon Grease (Item 10, Appendix E)
Replace.  (figure 4-15)
WARNING
Cleanliness is imperative in maintaining and handling diving system components.  All tools
and parts must be kept free of oil, grease, rust, or other contamination in accordance with
accepted  Army  diving  cleaning  procedures.    Foreign  substances  within  an  assembly  could
result in equipment failure and possible injury or death to personnel.
Ensure  that  all  air  lines  and  components  removed  or  openings  into  the  air  system  that
provides  breathing  air  are  covered  with  a  plastic  bag  and  secured  with  a  rubber  band  or
taped shut.  Small components should be stored in a plastic bag and sealed.  Failure to do
so will cause air system to become contaminated and could result in injury or death to the
diver.
(1)    Unscrew and remove diffuser assembly (1) and preformed packing (2) from air supply valve (3).
NOTE
Use only enough lubricant to coat preformed packings without excess.
(2)    Apply a thin film of lubricant to new preformed packing.
(3)    Install new preformed packing (2) and diffuser assembly (1).
4-44