Isuzu 4JA1 Workshop Manual page 211

5. Install the pins in the spacer.
6. Install the nozzle on the spacer.
040MV019.tif
7. Hand-tighten the adjustment retaining nut together
040MV010.tif
8. Tighten the adjustment retaining nut to the specified
040MV014-1.tif
9. Set the nozzle holder to the nozzle tester.
10. Operate the nozzle tester and measure the first nozzle
11. If the first nozzle opening pressure is not as specified,
CAUTION:
•
040MV030.tif
with the gasket to the nozzle holder.
Retaining nut: 157892-3200 (Bosch AS)
Gasket: 157892-5100 (Bosch AS)
(Bosch AS = Bosch Automotive Systems Corporation)
torque.
Torque: 50 N·m (5.1 kg·m/36.9 Ib·ft)
opening pressure.
disassemble the nozzle holder and replace the shim
until the pressure is as specified.
Use a micrometer to measure shim thickness.
FUEL SYSTEM 6C – 29