TESTING AND ADJUSTING TESTING AND ADJUSTING FUEL INJECTION TIMING TESTING AND ADJUSTING FUEL INJECTION TIMING 1. Remove the No. 1 cylinder nozzle holder assem- bly. fl For details, see DISASSEMBLY AND ASSEM- BLY, REMOVAL OF NOZZLE HOLDER AS- SEMBLY. 2. Remove coupling cover (1) of the fuel injection pump. 3. Align “1.6TOP” line (2) on the crankshaft pulley with pointer (3). 1 2 BLP00010 fl Check that line “ a ” on the fuel injection pump is near line “ b ” on the coupling. If the lines are not near each other (No. 1 cylinder exhaust top dead center), rotate the crankshaft pulley an- other 360° and align the lines again (No. 1 cylin- der compression top dead center). a b BLP00017 4.
Install dial gauge O in the hole of the No. 1 nozzle holder, and set so that it contacts the top surface of the piston. 5. Set the scale on dial gauge O to 0 when the piston is at top dead center. fl Rotate the crankshaft in the normal direc- tion and in the reverse direction to set to top dead center. fl Note down the value shown by the short hand on the dial gauge. 20-107 PC400, 450-6