TM 1-4220-250-12&P 4.8.4 Repair Inflation Assembly. This task covers:       a Repair b.  Remove c.  Install INITIAL SET UP Tools/Equipment Valve,  Inflation, Aircraft General Mechanic Tool Kit Type  II MIL-I-23145 Torque Wrench                          0-1 50 inch lbs. Abrasive Mat (D5) Corrosion Preventive Materials/Parts Compound (Aimguard) Type I    (D6) Thread,  Nylon (D19) Lubricant,  Silicone (D16) Kit,  Gasket 105AS100-5 1. Repair  of  C0₂  Inflation  Valve.    To  repair  theC0₂ inflation valve,  proceed as follows.  See Figures 4-2 and 4-3. a. Remove  C0₂  cylinder  from  valve  assembly  by removing and discarding ordnance tape. Ensure set screw is loose so as not to damage C0₂ cylinder threads. NOTE Do not descard set screw b. Remove   C0₂   cylinder   from   valve.      Remove inflator cap nut and inflation valve from the raft. Discard the two gaskets on the valve stem. Figure 4-2. CO₂ Inflation Assembly. c. Remove grooved taper pin (retaining lever) from inflation valve,  using awl and mallet.  See Figure 4-2. d. Remove lever,  spring,  and piercing pin. e. If  spring  is  broken  or  corroded,    replace  entire valve,  in accordance with paragraph 4.6.2. f. If  piercing  pin  or  actuating  lever  is  corroded, remove corrosion with the 240 grit emery cloth (D5).    Do  not  damage  0-ring  on  piercing  pin. Wipe  off  any  dirt  or  moisture  from  actuating lever    and    apply    a    thin    coat    of    corrosion preventive compound (D6) and allow to dry. g. Clean  residue  from  actuating  lever  on  piercing pin.      Lightly   coat   base   of   piercing   pin   with silicone lubricant (D16). h. Reassemble inflation valve and operate actuating lever three or four times.  Ensure that lever and piercing pin move freely. i. If  piercing  pin  and  lever  do  not  move  freely, replace     entire     valve,     in     accordance     with paragraph 4.6.2. GO NEXT PAGE 4-20