66 F2B ENGINE T RAKKER E URO 4/5 540815 Replacing the valvedrive gear and the Base q November 2006 Print 603.93.641 Check that the teeth of the gears are not damaged or worn, otherwise remove them using the appropriate extractor. Figure 80 1 2 49020 After fitting the gear (1) on the crankshaft (2), heat it for 15 minutes in an oven at temperature not higher than 180 C. Let them cool down after the installation. If changing the pin (3), after fitting it on, check it protrudes from the crankshaft as shown in the figure. 540811 Checking main journal installation clearance Figure 81 47579 Install the oil spray nozzles (2) and have the dowel coincide with the block hole (3).
Install the half-bearings (1) on the main bearings. Figure 82 47578 Using the hoist and hook 99360500 (1)mount thecrankshaft (2). Figure 83 49021 Install the half-bearings (1) on the main bearings in the lower crankcase (2). Check the installation clearance between the main journals and the relative bearings as follows: