Figure 6-19. Injector Cup Spray Tester
6-14. FUEL INJECTOR DISASSEMBLY.
Injectors are selective, class fit with the barrels. Match-mark or otherwise Identify each
plunger so that It will be kept with Its mating barrel. To avoid warping or scratching the
plungers, do not lay them on their sides; stand them upright on the spring seat end.
Remove the sealing ring (1, Figure 6-21), injector plunger link (2), plunger (3), and spring (4). Store the plunger
by standing it upright on the spring seat end. Discard the sealing ring (1).
Remove and discard the preformed packing (5, 6, and 7).
Remove filter screen dip (8) and strainer element (9). Discard the strainer element and dip.
Do not remove the orifice (10) at this time unless it is visibly damaged.
Position the groove in the adapter (17) of the fuel injector in the body wrench portion of the injector assembly
stand ST-1 298 with the injector retainer (12) facing upward. Position injector cup wrench ST-995 on the injector
retainer (12) and loosen the retainer using a 1-1/4 inch box or open end wrench on ST-995.
To prevent loss of the check ball when removing the retainer, hold the Injector upright with
the retainer facing down.
Hold the injector upright with the retainer (12) facing down. and remove the retainer, check ball (13), barrel (15),
and cup (16). Remove the spiral pins (14) only if damaged. Discard the spiral pins.