Manuale Officina LGW 523-627 - lombardini service

Lubrification circuit6Internal oil filter and oil sump return pipeClean with petrol the internal oil filter 1 and oil sump return pipe 2,blow also some compressed air.Replace sealing rings 3 and 4. Tighten oil drain plug at a torque of 40 Nm.152153Oil pumpThe oil pump mounted on LDW 502-602-903 engines has a lowerdelivery rate than that mounted on LDW 1204-1204/T engines.Oil pump delivery test at 1000 revs per minute with an oil temperatureof 120°C.Engine Delivery (l/1') Pressure (bar)502-602-702-903-10034÷4, 31204-1204/T-14046÷6, 53÷3,5154Delivery test at 3600 rpm with an oil temperature of 120°C.Engine Delivery (l/1') Pressure (bar)502-602-702-903-100319, 31204-1204/T-140428, 54÷4,5Oil pump, clearance between rotorsMeasure the clearance A between teeth as in figure; the maximumvalue is 0.171 mm.Clearance wear limit should be 0.250 mm. See page 42 for assembly and disassembly.155FOCS Workshop Manual_cod. 1.5302.351_7° ed_ rev. 06- 69 -