FUEL SYSTEM 6C – 25
INJECTION NOZZLE (4JA1L)
DISASSEMBLY
RTW76CMF000401
Disassembly Steps
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
Important Operations
Injection nozzle adjustment is possible only on the 4JA1L
engine.
The two-spring nozzle holder has been developed to
reduce NOx (Nitrogen Oxides) and particulates from direct
injection diesel engine exhaust.
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.
Disassemble the nozzle holder assembly to numerical
order.
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