D439E Service Manual 4. Fuel system
198
Installation
1. The ignition key must be turned off
2. Install new O-ring to the injector.
3. Install new nozzle gasket to the Injector nozzle.
4. lnstall an injector clamp-mounting bolt.
Tightening torque : 3.1~3.5kgf.m
5. Install injector and Injection pipe No. 1, 2, 3 and 4
between rails.
Tightening torque : 4.0~4.5kgf.m
CAUTION
• Fix the injector securely with the injector clamp
and then, install high-pressure fuel pipe.
• When installing high-pressure pipe, assemble
the nut tentatively to both sides of injector and
rail.
• After tentative assembly, tighten the nut in
accordance with the specified torque.
• Do not apply excessive force nor use
unauthorized tools.
6. Fix the fuel return hose. Never fix without fixing
clip.
7. Install the Injector connector.
NOTE : Install the connector #1, 2, 3 and 4 naturally
under the high-pressure pipe.
8. Start the engine and check the high-pressure fuel
line for any leakage of oil.
NOTE : If common rail fuel injection system leaks
despite of the correct tightening torque, then
components must be replaced.
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