3. Inspection and Adjustement @ Apply oil to the contact between the adjusting screw and push rod. @ Turn the crankshaft 180° then and make adjustment for the No.3 cylinder. Then adjust the No.4 and No.2 cylin- ders in this order. The cylinder to be adjusted first does and adjust the cylinder where the pis- not have to be the No.1 cylinder. Select ton is the nearest to the top dead center after turning, and make adjustment for other cylinders in the order of ignition by turning the crankshaft 180” each time. 3.6 Inspecting the Fuel Injection Valve Injection Pressure and Spray Pattern 1 Wear protective g/asses when testing injection from the fuel injection valve.
Never approach the injection nozzle portion with a hand. The oil jetting out from the nozzle is at a high pressure to cause loss of sight or injury if coming into careless contact with it. (1) Injection pressure measurement * Remove carbon deposit at the nozzle hole thoroughly before measurement. 1 Standard 1-1 Connect the fuel injection valve to the high pressure pipe of the nozzle tester. Operate the nozzle tester lever slowly and read the pressure at the moment when the fuel injection from the nozzle starts. If the measured injection pressure is the pressure adjusting shim with a thicker one.
lower than the standard level, replace Injection nozzle 1 ,/ \ Injection pressure measurement with nozzle tester Type of pressure adjusting shim thickness (mm) Injection pressure adjustment 0.13, 0.15, 0.18, 0.4, 0.5, 0.8 The injection pressure is increased by approx. 1.87 MPa(19 kgf/cm2) when the adjusting shim thickness is increased by 0.1 mm. 3-4