Isuzu 4JA1 Workshop Manual page 212

6C – 30 FUEL SYSTEM
• First nozzle opening pressure adjusting shims
040LX010.tif
Full needle valve lift confirmation
1. Install the gasket and plug on the adjustment retaining
nut.
Gasket:
Plug:
040MV013.tif
2. Position the nozzle holder with the nozzle facing down
and install the dial gauge holder on the nozzle holder.
Dial gauge holder: 157892-5000 (Bosch AS)
040MV012.tif
3. Install the nut on the dial gauge holder.
Nut: 157892-1000 (Bosch AS)
040MV011.tif
Parts No. (ISUZU)
115349-0420
115349-0430
115349-0440
115349-0450
115349-0460
115349-0470
115349-0480
115349-0490
026508-1140 (Bosch AS)
8-9422-7602-0 (ISUZU)
157892-1600 (Bosch AS)
Thickness mm (in)
0.40 (0.0157)
0.50 (0.0197)
0.52 (0.0205)
0.54 (0.0213)
0.56 (0.0221)
0.58 (0.0228)
0.60 (0.0236)
0.70 (0.0275)