ARMY TM 9-2815-256-24 AIR FORCE TO 38G1-96-2 MARINE CORPS TM 2815-24/5 j. Connect fuel return line and fuel supply line to pump. k. Connect throttle control system, refer to end item maintenance manual. 3-29.  FUEL INJECTION NO7ZLE. 3-29.1.  Removal. Warning Compressed air used for cleaning can create airborne particles that may enter the eyes. Pressure will not exceed 30 psig (207 kPa).  Eye protection required. NOTE Before  removal,  carefully  remove  all  dirt  from  cylinder  head  around  fuel  injection  nozzles.    Clean with compressed air to prevent dirt from entering cylinders or valve seats.  Plug bore in cylinder head after  each  fuel  injection  nozzle  has  been  removed.    Cap  fuel  line  openings  as  soon  as  they  are disconnected. NOTE Immediately fit protective caps over nozzle tips and line connections to avoid handling damage. NOTE Do  not  bend  fuel  delivery  lines,  as  this  may  affect  their  durability.    When  loosening  fuel  pressure lines, hold male union of nozzle line stationary with a second wrench. a. Loosen coupling nut (3, FIGURE 3-112) and remove tee (1) from nozzle (5).  Remove and discard grommet (2). NOTE When all fuel injection nozzles have to be removed, disconnect leak-off line assembly at fuel tank, at injection pump, and at each nozzle tee-fitting.  Lift off complete leak-off line as an assembly. b. Disconnect fuel injection line from nozzle.  Cap openings. c. Remove bolt (4) securing nozzle (5) to cylinder head. d. Pull injection nozzle out of cylinder head with a suitable prying tool placed between bracket (8) and spacer (9). e. Clean nozzle bore with nozzle bore cleaning tool.  Blow debris from bore with compressed air and plug bore to prevent entry of foreign material. 3-132