TM 9-2320-260-34-1
3-84. TOP STOP INJECTOR PLUNGER TRAVEL ADJUSTMENT
THIS TASK COVERS:
Adjustment
INITIAl SETUP
TOOLS
APPLICABLE MODELS
Injector locknut wrench (Appendix B, Item 25)
All
Torque wrench. 3/8-in. dr. (Appendix B. Item 4)
TOOLS
Crowsfoot wrench (Appendix B, Item 151)
Top stop setting fixture (Appendix B, Item 150)
EQUIPMENT CONDITION
Holding bracket (Appendix B, Item 152)
Fuel injectors cleaned (non-top stop) (para. 5-7),
Injector plunger link (Appendix B, Item 153)
Injector adjusting tool (Appendix B, Item 154)
(top stop) (para. 5-8).
CAUTION
This procedure is for top stop injectors. It is used to prevent
excessive loading of the injector actuating system and possible
failure.
NOTE
Use top stop setting fixture (3822696) to adjust top stop fuel
injector plunger travel.
1. Place deadweight switch (2) in RAISE position.
2. Place plunger switch (3) in UNLOAD position.
NOTE
Air pressure setting must be maintained throughout adjustment
procedure.
3. Turn air pressure adjust knob (1) to adjust air pressure to 77-83 psi (531-572 kPa).
4. Place digimatic indicator (5) and digimatic presetter power switches (4) to ON position.
5. Remove plunger (7) from fuel injector (8).
6. Install compressed spring (11), spring retainer (10), and plunger (7) in fuel injector (8).
7. Thread locknut assembly (9) into fuel injector (8) until locknut assembly (9) contacts fuel injector (8).
