159212-0620 ZEXEL 9 421 622 581 BOSCH HEADLESS SCREW 9421622581 1592120620 1157230950

start by:a) remove timing gear coverb) remove flywheel housingc) remove pistonsd) remove crankshaft rear seal wear sleevee) remove crankshaft front seal wear sleevef) remove fuel injection pump housing and governor Check the bearing caps for a number as to their location. If a number can not be seen, put a number on the left side of cylinder block and bearing cap. 1. Loosen the bolts (2) that hold main bearing caps (1) to cylinder block.2. Install one of the bolts for flywheel in each end