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Inspection for spill tube airtightness Before the rocker cover is installed, perform the inspection as fol- pressure shown below is applied. Standard: −53.3 to −66.7 kPa (−533 to −667 mbar, −400 to Air bleeding of fuel piping After the repair, bleed air in the piping by pumping the priming Injection pressure test 1. Install injection nozzle assembly to injection nozzle tester and bleed air from flare nut. 2. Pump the tester handle slowly (one time per second) and watch the pressure gauge. 3. Read the pressure gauge when the injection pressure just starts dropping. Initial injection pressure: Used 19,026 kPa (190.3 bar, 194 kg/cm 2 , 2,759 psi) New 19,516 - 20,497 kPa (195.2 - 205.0 bar, 199 - 209 2 , 2,830 - 2,972 psi) Limit 16,182 kPa (161.8 bar, 165 kg/cm 2 , 2,346 psi) I The injection nozzle assembly has a 2-stage pressure injection JEF250Z MEC991D JEF348Y BASIC SERVICE PROCEDURE ZD30DDTi Injection Tube and Injection Nozzle (Cont’d) EC-26 |