Isuzu NPR 4J Series User Manual

6C - 14 ENGINE FUEL
4-1 Injection Nozzle (Two spring nozzle holder)
(4JB1-TC only)
The two-spring nozzle holder has been developed to
reduce NOx (Nitrogen Oxides) and particulates from direct
injection diesel engine exhaust.
DISASSEMBLY
1. Retaining nut
2. Nozzle & pin
3. Spacer & pin
4. Lift piece
5. Spring seat
6. Push rod
7. Shim (Second nozzle opening pressure adjustment)
8. Second spring
9. Collar
10. Spring seat
11. First spring
12. Shim (First nozzle opening pressure adjustment)
13. Nozzle holder body
14. Eye bolt
15. Gasket
(1) Before disassembly remove carbon deposit from
nozzle and nozzle holder using a wire brush and wash
the outside nozzle holder assembly.
Caution:
Do not touch nozzle holes with the wire brush
during cleaning it.
(2) Disassemble the nozzle holder assembly to numerical
order.
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Isuzu NPR 4J Series Specifications

General

Brand	Isuzu
Model	NPR 4J Series
Category	Engine
Language	English