5-77. APU INJECTION NOZZLE
This task covers:
c. Cleaning and Inspection f. Follow-on Maintenance
Tool Kit, General Mechanics, Automotive
Main Engine Shutdown (see para 2-12.)
(Appendix B, Section III, Item 1)
APU Shutdown (see para 2-16.)
Nozzle Tester (Appendix B, Section III, Item 91)
Batteries Disconnected (see para 4-114.)
Nozzle Cleaning kit (Appendix B, Section III, Item 92)
Solvent (Item 3, Appendix E)
Oil (Item 10, Appendix E)
Gaskets (Figure 211, Appendix F)
Loosen door screw and remove air housing door.
Remove four capscrews, four
housing cover, and nozzle cover.
Tag and remove two fuel lines (1 and 2) from
nozzle (5) and pump (6).
Remove two capscrews (2), two flatwashers (3),
flange (4), nozzle and holder (5).
Remove nozzle (7) from holder (8) and remove
three gaskets (9, 10, 11) and shield (12). Discard
gaskets. Remove and retain elbow (13).
Clamp the nozzle holder body in a vise and
remove the nozzle cap nut and nozzle.
Install the nozzle cap nut loosely to protect the
lapped surface of the holder body.
If necessary to further disassemble the nozzle,
remove the pressure adjusting screw and lift out
the spring and spindle assembly.