TESTING AND ADJUSTING TESTING AND ADJUSTING FUEL INJECTION TIMING 6. Rotate the crankshaft approx. 45°C in the re- verse direction. 7. Rotate the crankshaft again in the normal direc- tion until the dimension becomes specified di- mension “ c ”. (Always rotate the crankshaft in the normal direction to align the position.) fl Specified dimension c : 1.21 ± 0.2 mm fl When specified dimension “ c ” is correct, check that line “ a ” on the fuel injection pump body is aligned with line “ b ” on the cou- pling. 8. Rotate the crankshaft in the normal direction and check again that when the No.
1 cylinder reaches top dead center (the dial gauge indica- tor starts to move in the opposite direction), the dial gauge display is 0 ± 0.2 mm. If it is not 0 ± 0.2 mm, carry out the adjustment again from Step 5. Adjusting fl If the fuel injection timing is not correct, adjust as follows. fl Set the crankshaft to specified dimension “ c (see Step 7 above) when adjusting. 1. Loosen 2 mounting bolts and nuts (4) and 1 mounting bolt (5), and set so that coupling (6) is free. 2. Align line “ a ” on the fuel injection pump with line “ b ” on the coupling. 3. Tighten 2 mounting bolts and nuts (4), then tighten 1 mounting bolt (5). 3 Mounting bolt, nut (4):
58.8 – 63.7 Nm {6.0 – 6.5 kgm} 3 Mounting bolt (5): 73.5 – 83.3 Nm {7.5 – 8.5 kgm} 20-108 PC400, 450-6