2. INSPECTION AND ADJUSTMENT 1) Before removing a fuel injection pump drive gear, make ID marks on the gearing part of the pump drive gear and the idle gear with paint and so on. 2) Make the mark-off line to the gear case precisely in accordance with the position of mark-off line of the fuel injection pump. 3) Before removing a fuel injection pump, put the standard mark of a sticker for fuel injection angle adjustment in accordance with the mark-off line of the fuel injection pump and paste it on the gear case. 4) Remove a fuel injection pump, and read the fuel injection angle recorded in that fuel injection pump.
5) Read the injection angle recorded on a reassembled fuel injection pump and calculate the difference from the injection angle of the disassembled fuel injection pump. (When re-installation does the same fuel injection pump, the angular difference is zero.) Fuel injection angle difference (cam angle) = (the fuel injection angle of a reassembled fuel injection pump) – (the fuel injection angle of a disassembled previous fuel injection pump) [NOTICE] Tell the fuel injection pump number to Komatsu, and inquire the injection angle of the pump when it is hard to find out.
6) Put the fuel injection pump on the gear case temporarily and install the drive gear on the cam shaft with checking the ID marks, which were put on the fuel injection pump drive gear and the idle gear at the time of the disassembling. Tighten the installation nut of a pump drive gear. 82E-5 – 98E-5 SERIES 2-27 Model Tightening torque Nm {kgm} Lubricating oil application (thread portion, and seat surface) 3D82AE – 3D88E 78 – 88 {8 – 9} Not applied 4D92E – 4D98E 113 – 123 {11.5 – 12.5}