Manuale Officina LGW 523-627 - lombardini service

4Disassembly / ReassemblyFlywheelDanger - AttentionDuring dismounting be particularly careful not to let theflywheel fall, as this can be very dangerous for the operator.Use protective goggles while removing the starter ring gear.21Unscrew the screws that fasten it to the crankshaft.In order to replace the ring gear, it is necessary to disassemble theflywheel.Cut the ring gear in several places using a chisel and remove it.Heat the new ring gear uniformly and keep it at a temperature of300°C for 15÷20 minutes.Insert the ring gear into its seat and place it carefully on the rim of theflywheel.eave to the ring gear to cool gently before reassembling the flywheel.When refitting tighten the screws at 80 Nm.Return pulleyRemove the center bolt 1 and slide the pulley from the engine.Components:1 Bolt 6 Bearing2 Washer 7 Spacer3 Spacer 8 Bearing4 Pulley 9 Snap Ring5 Snap RingNote: On remounting thoroughly clean out the threads of screw 1and tighten at 25 Nm.22 23Driving pulleyImportantTo loosen or screw in screw 1 at the set torque you mustalways stop the crankshaft and not other parts of the engine.Locking the crankshaft: remove the engine starter and installing thefixture tool 1460-051.Remove the pulley, after having unscrewed central screw 1 andproceed with the four lateral screws.The central bolt 1 is left-handed.24 When reassembling, apply some Moly-slip antiseizure compoundon the screw thread and tighten at 360 Nm.Note: When pulley reference mark (A) aligns with the timing coverreference mark (B), the flywheel side piston is at TDC.- 34 - FOCS Workshop Manual_cod. 1.5302.351_7° ed_ rev. 06