Manuale Officina LGW 523-627 - lombardini service

4Disassembly / ReassemblyCamshaft timing - Belt tightening toolPosition belt preload tool 7107-1460-049 1 over the timing belt idleradjustment ear 2.See "Camshaft timing - Belt Tightening and Fastening".38Camshaft timing - Belt Tightening and FasteningInsert the torque wrench in the suitable tool so that the A axis ofthe key fig. 39 is at 90° to the B axis of the tool in fig. 38.Tighten in clockwise direction at 20 Nm. Maintaining the belt tension, tighten nut 3 with another torquewrench at 40 Nm, after having remounted the drive pulley.Rotate the crankshaft a few times and check that the tension is asdescribed above.39The check must be carried out with the appropriate Nippon Densotension measuring instrument (halfway along the longest section ofthe belt), the value for a cold engine must be 15±2Kg.Valve timing checkA = Intake valveB = Exhaust valveRotate the engine in the normal direction of rotation until the No. 1piston (flywheel side) approaches TDC- compression strokeCheck the balance of intake and exhaust valves A and B placing thetwo micrometers testers on the valve collars.40- 38 - FOCS Workshop Manual_cod. 1.5302.351_7° ed_ rev. 06