SERVICE MANUALNOZZLESSection 12- INJECTION NOZZLE SPECIFICATIONS -VALUE INVALUE INDIMENSION TITLEMETRIC MEASUREENGLISH MEASURENozzle cap nut torque (with nozzle installed) .............45 N•m33 Ib-ftNozzle retainer bolt torque.....................................27 N•m20 Ib-ftInjection high pressure line connector torque* ...........41 N•m30 Ib-ftLeakage test pressures **.....................................3448 kPa500 psiOpening Pressure24820kPa(3600psi)New or reconditioned.....................................25855 kPa(3750 psi)Minimum opening pressure before replacement........20,000 kPa2900 psi* Injection line fittings at the pump and nozzle are frequently overtightened due to the fitting size (3/4"). This wedges theinjection line, often partly closing the ends. This alters fuel delivery characteristics, raises injection line pressures andcauses injection pump failures. Inspect the ends of the injection lines and discard any with wedged or damagedfittings or holes.** When subjected to 3448 kPa (500 psi) hydraulic pressure below opening pressure for 5 seconds, wetting of the nozzletip is permissible without the formation of a droplet.INSTALLATIONInstall the Injection Pump Nozzles as follows:1.When cylinder head is not removed, plug thenozzle opening to prevent contaminantsfrom falling into the combustion chamberwhen preparing the nozzle sleeve bore forthe nozzle sleeve.2.Refer to Section 3, for a detailed procedureon nozzle sleeve installation.CGES-185-3PRINTED IN UNITED STATES OF AMERICAPage 3
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