4-40. FUEL INJECTOR ASSEMBLY REPAIR (Cont)
solvent P-D-680 is toxic and flammable.
gloves and use only in a well-ventilated
skin, eyes, and clothes and dont breathe vapors. Do not
use near open flame or excessive heat. The flash point is 100oF-138°F
(38o-50oC). If you become dizzy while using cleaning solvent, get fresh
air immediately and get medical aid. If contact with eyes is made, wash
your eyes with water and get medical aid immediately.
Compressed air used for cleaning purposes will not exceed 30 psi. Use
only with effective chip guarding and personal protective equipment
(goggles/shield, gloves, etc).
Wash all parts with cleaning solvent and dry with clean, filtered compressed air. Use lint free
towels to wipe off parts. Clean out passages, drilled holes and slots in all injector parts.
Injector spray tip
(a) Soak spray tip in cleaning solvent
to loosen carbon.
Do not contact needle valve seat
with carbon removing tool during
tip insertion or-valve seat
Insert carbon removing tool (26)
Clean spray tip orifices with pin
vise (27) and cleaning wire (28).
Do not buff spray tip area
excessively. Do not use a steel wire
buffing wheel or spray tip holes may
(d) Clean exterior of spray tip with
brass wire buffing wheel.