Manuale Officina LGW 523-627 - lombardini service

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4Disassembly / ReassemblyShoulder half rings, oversized elementsDimensions (mm):C B **A*Std22,787÷22,92023,050÷23,1001 a 22,987÷23,12023,250÷23,3002 a 3,087÷23,22023,350÷23,4000,130÷0,3133 a 23,187÷23,32023,450÷23,500136137* A of Fig. 134.** B of Fig. 135.Grinding B as per relevant table, you can mount the following halfrings:1 st Oversized element Half rings 1 and 2 + 0.10 mm on both sidesof the bearing2 nd Oversized element Half rings 1 and 2 + 0.10 mm on one sideof the support and + 0.20 mm on the otherside.3 rd Oversized element Half rings 1 and 2 + 0.20 mm on both sidesof the bearing.Crankshaft front and back oil seal rings138Caution – WarningAn ambient temperature below -35°C may damage the rings.The front oil seal ring 1 inserted into the oil pump cover and the backone 2, in the flywheel side flange.If warped, hardened, or cracked, replace them.For the replacement:- Carefully clean the housing- Keep the ring immersed in engine oil for about half an hour.- Drive it into its housing with a buffer exercising a uniform pressureon the whole front surface. Be sure that the two surfaces A and Bmeet on the same level.- Refill the interior hollow with grease and lubricate the seal lip withthickened oil.Note: Before major engine overhaul, in case of oil leakage in theseal area of rings 3 and 4, you can remedy this by replacingthe rings and pushing them about 2 mm deeper with respectto the previous ones.If the rings are black it means zones 3 and 4 of the crankshaftare tempered. In this case it is necessary to remount a ring ofthe same colour.If the rings are brown it means that zones 3 and 4 of thecrankshaft are not tempered. In this case it is necessary toremount brown coloured rings.- 62 - FOCS Workshop Manual_cod. 1.5302.351_7° ed_ rev. 06
Disassembly / Reassembly4Crankshaft, lubrication linesCaution – WarningDuring repairs, when compressed air is used it is important towear protective goggles.A = Crankshaft LDW 502B = Crankshaft LDW 602-702Put the crankshaft in a bath of crude oil.Remove the caps and clean lines 1 and 2 or 3 and 4 with a bit;blow with compressed air.Reposition the new caps in their seating and check the seal.139Note: The LDW 502 crankshaft with aluminium crankcase is notinterchangeable with the cast iron crankcase, havingdifferent counterweights.Crankshaft, check journals and crankUse a micrometer for the outsides.140 141Journal and connecting rod pins diametersDimensions (mm):LDWRef.502 - 602 - 903 - 1204 - 1204/TTolerance Limit valueA ( mm)47,984÷48,00047,900B ( mm)39,984÷40.00039,900LDW702 - 1003 - 1404Ref.ToleranceLimit valueA ( mm)50,981÷51,00050,900142B ( mm)39,984÷40.00039,900FOCS Workshop Manual_cod. 1.5302.351_7° ed_ rev. 06- 63 -
Page 1:
WORKSHOP MANUALFOCS Engine Seriesco
Page 4 and 5:
-REGISTRATION OF MODIFICATIONS TO T
Page 6 and 7:
-Chapter indexCrankshaft timing pul
Page 8 and 9:
-Chapter indexSetting of injector a
Page 10 and 11:
1General remarks and safety informa
Page 12 and 13: 2TECHNICAL INFORMATIONTROUBLE SHOOT
Page 14 and 15: 2 Technical informationMANUFACTURER
Page 16 and 17: 2 Technical informationTECHINICAL S
Page 18 and 19: 2 Technical informationPERFORMANCE
Page 20 and 21: 2 Technical informationLDW 702 LDW
Page 22 and 23: 2 Technical informationLDW 1204LDW
Page 24 and 25: 3MAINTENANCE - RECOMMENDED OIL TYPE
Page 26 and 27: 3Maintenance - Recommended oil type
Page 28 and 29: 4DISASSEMBLY / REASSEMBLYRECOMMENDA
Page 30 and 31: 4Disassembly / ReassemblyAir filter
Page 32 and 33: 4Disassembly / ReassemblyVacuum pum
Page 34 and 35: 4Disassembly / ReassemblyFlywheelDa
Page 36 and 37: 4Disassembly / ReassemblyTiming bel
Page 38 and 39: 4Disassembly / ReassemblyCamshaft t
Page 40 and 41: 4Disassembly / ReassemblySPEED GOVE
Page 42 and 43: 4Disassembly / ReassemblyOil pump -
Page 44 and 45: 4Disassembly / ReassemblyCrankcase
Page 46 and 47: 4Disassembly / ReassemblyRocker arm
Page 48 and 49: 4Disassembly / ReassemblyCYLINDER H
Page 50 and 51: 4Disassembly / ReassemblyValve seat
Page 52 and 53: 4Disassembly / ReassemblyOil pan, r
Page 54 and 55: 4Disassembly / ReassemblyPiston, we
Page 56 and 57: 4Disassembly / ReassemblyHead gaske
Page 58 and 59: 4Disassembly / ReassemblyCONNECTING
Page 60 and 61: 4Disassembly / ReassemblyCentral ma
Page 64 and 65: 4Disassembly / ReassemblyMain beari
Page 66 and 67: 5TURBOCHARGERTURBO CHARGEROnly the
Page 68 and 69: 6LUBRIFICATION CIRCUITDanger - Atte
Page 70 and 71: 6Lubrification circuitOil pressure
Page 72 and 73: 7COOLANT CIRCUITDanger - Attention-
Page 74 and 75: 8FUEL SYSTEMFuel feeding / injectio
Page 76 and 77: 8Fuel systemPlunger barrel ring nut
Page 78 and 79: 8Fuel systemHIGH PREASSURE HOLEREFE
Page 80 and 81: 8Fuel systemInjection advance contr
Page 82 and 83: 8Fuel systemStatic injection advanc
Page 84 and 85: 9ELECTRIC SYSTEMELECTRIC CONTROL PA
Page 86 and 87: 9Electric SystemElectric starting l
Page 92 and 93: 9Electric SystemStarter motor, Bosc
Page 94 and 95: 10SETTINGSSPEED SETTINGSSetting the
Page 96 and 97: 10SettingsPump/injector unit delive
Page 98 and 99: 11STORAGEENGINE STORAGE (NOT INSTAL
Page 100 and 101: 12 TORQUE SPECIFICATIONS AND USE OF
Page 102 and 103: 13SPECIAL TOOLSSPECIAL TOOLS DESCIP
Page 104: . .................................
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Manuale Officina LGW 523-627 - lombardini service

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