Lombardini 11 LD 626-3 - Injector Setting; Static Injection Timing

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11 LD Workshop Manual_cod. 1.5302.296_5° ed_ rev. 04
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Injector setting
Connect injector to high pression pump and check that setting
pressure is 210 ÷ 220 bar for size S injector and 245 ÷ 255 bar for
size P injector.
To change injector setting replace the shim over the spring.
When replacing the spring, setting should be performed at a 10 bar
greater pressure to allow for bedding during operation.
Check needIe valve sealing by slowly moving hand pump until
approximately 180 bar.
Replace nozzle in case of dripping (only for size S injectors).
Fuel system
Use a 19 mm box wrench to lock the injection pump union and a 17
mm box wrench to loosen the union of the injector pump high-
pressure pipe.
Use a 14 mm box wrench to lock the injector union and a 17 mm
box wrench to loosen the union of the injector pump high-pressure
pipe.
(Static) Injection timing
Remove the rocker arm cover.