Isuzu NHR 4J Series Workshop Manual page 275

6C - 16 ENGINE FUEL
First nozzle opening pressure adjustment
1. Claim the nozzle holder in a vise.
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2. Install the shim, first spring and spring seat in the
nozzle holder.
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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.
040MV018.tif
5. Install the pins in the spacer.
6. Install the nozzle on the spacer.
040MV019.tif