TM 5-2420-230-24-2
Section 6 - Injectors - Group 06
Injector - Clean and Inspect
B Series Shop Manual
Page 6-9
Nozzle Cleaning Kit 3376947
Caution: Never use emery paper or any other metal
scraper to clean the nozzle.
Clean the nozzle seat with scraper as shown dipped in
test oil. Polish the needle seat with the piece of hardwood
dipped in test oil.
Clean the interior ring groove of the nozzle with the scraper
as shown. Rinse in solvent to remove all dirt and carbon
residue and dip in clean test oil.
Clean the spray holes of hole type nozzles as shown with
the appropriate size cleaning needle.
Remove burned-on combustion deposits on all nozzles
with a commercially available cleaner. Rinse all parts in
clean test oil.
Clean the needle valve tip with a brass brush. Then,
inspect for rough surfaces or erosion. The pressure shoul-
der will normally have a rough machined appearance.
NOTE: Deteriorated needle valves must be replaced as a
matched unit with their compatible nozzle body.
L-363