ARMY TM 9-6115-670-14&P 4-64 4.27.  BREATHER. This task covers: Service INITIAL SETUP Tools General Mechanic's Tool Kit (Item 1, Appendix B) Equipment Conditions Engine stopped and allowed to cool completely. Master ON-OFF switch on APU control unit   set to OFF. Materials/Parts Breather Tube Sealing Compound 88-20595-2 (Item 18, Appendix F) Waterflange removed (para 6.33.). Air intake pipe removed (para 4.47.). SERVICE a.  Remove nut and lock washer (3, Figure 4-14) securing breather tube clamp (4) to alternator support bracket (1) and remove clamp (4). b.  Remove breather tube (2) from clamp (4). c.  Remove breather tube (2, Figure 4-14 (sheet 2)) from breather pipe (6). d.  Inspect breather tube (2) and replace if showing signs of corrosion. e.  Remove breather pipe (6) from breather (5) by turning ccw. f.   Clean breather with soft, lint-free cloth and remove any dirt or grease blocking opening. g.  Clean exterior of breather pipe (6) and breather tube (2) with soft, lint-free cloth. h.  Blow out breather pipe (6) and breather tube (2) with compressed air. i.    Apply sealant to threads of breather pipe (6) and install breather pipe on to breather (5) by turning ccw. j.    Install breather tube (2) on to breather pipe (6). WARNING Compressed   air   shall   not   be   used   for   cleaning purposes  except  where  reduced  to  less  than  29 pounds per square inch gauge (psig) (199.94 kPa) and then only with effective chip guarding and personnel protective equipment. Compressed air is dangerous and can cause serious bodily harm if protective means or  methods  are  not  observed  to  prevent  chip  or particle (of whatever size) from being blown into the eyes  or  unprotected  skin  of  the  operator  or  other personnel.