5.5.4. Injection pump Check the fuel injection pump housing for cracks or breaks, and replace if damaged. Check and see if the lead seal for idling control and speed control levers have not been removed. No alterations must be made to the injection pump. If the lead seal is damaged the warranty on the engine will become null and void. We strongly recommended that any faults developing in the injection pump should be taken care of by authorized specialist personnel. 5.6. Injection Nozzle Maintenance ( by authorized specialist personnel ) - The injectors are designed to spray the fuel delivered by the injection pump directly into the spherical combustion chamber in the piston crown.
- The injector consists of the nozzle and the nozzle holder. - A copper seal fitted to the injector ensures gas-tight seating and good heat dissipation. EA0M3003 - The opening pressure of the nozzle is adjusted by means of shims at the com- pression spring. Normal Abnormal Abnormal EFM1006I Install a nozzle to a nozzle tester. Check injection pressure, and adjust the nozzle using the adjusting shim if the pressure does not meet the specified limit. Check nozzle spray patterns and replace if damaged. - 109 - MAINTENANCE AND CARE Engine Model DE12T/TI/TIA DE12TIS Injection nozzle pressure 220 kg/cm2 160 / 220 kg/cm2