Manuale Officina LGW 523-627 - lombardini service

4Disassembly / ReassemblySPEED GOVERNORThe weight-type mechanical governor, is driven directly by thecamshaft and is housed with the cylinder head.Components:1 Thrust washer2 Spool3 Flyweight assemblyNote: In engines with the minimum/maximum (see fig. 49) theweights are lightened by 25%.4243Speed governor components1 Oil seal2 Screw3 Support4 O-Ring5 Bearing6 Retainer7 Screw8 Flyweight assembly9 Spool10 Thrust washer44Governor springsUnscrew the pin that attaches it to the cylinder head.To remove it as shown in the figure it is necessary to dismount thecamshaft. It could also be removed from the accelerator box side byunscrewing the torque gearing device.Before reassembling it, check value A (45 to 46 mm) and theparallelism of the two levels B that must not exceed 0.05 mm.Note: There are 5 different types of regulator springs C. Thesechange according to the engine adjustment: standard springfor 3,600 rpm, for 3,000 rpm, for 2,400 to 2,600 rpm, for1,800 rpm and for 1,500 rpm.4546Governor springs for GensetsIn the section view of the leverages the 4 ball bearings A arehighlighted.They are mounted on engines for generator sets adjusted at1,500÷1,800 rpm and on other particular applications on request.48- 40 - FOCS Workshop Manual_cod. 1.5302.351_7° ed_ rev. 06