Isuzu 4JA1 Workshop Manual page 210

6C – 28 FUEL SYSTEM
Injection Nozzle Adjustment
First nozzle opening pressure adjustment
1.Clamp the nozzle holder in a vise.
040MV015.tif
2. Install the shim, first spring and spring seat in the
nozzle holder.
040MV016.tif
3. Install the collar, second spring, shim, spring seat and
pushrod in the nozzle holder.
040MV017.tif
4. Install the pins, lift piece and spacer in the nozzle
holder.
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