Lombardini LDW 502 User Manual

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FOCS Workshop Manual_cod. 1.5302.351_7° ed_ rev. 06
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Oil filter cartridge
Components:
1 Gasket
2 Plate
3 Rubber element
4 Spring
5 Filtering element
6 By-pass valve
7 Spring
Characteristics:
Maximum operating pressure: ............................. 7 bar
Maximum bursting pressure: ............................... 20 bar
Degree of filtration: .............................................. 15
µµ
µµ
µ
By-pass valve calibration: .................................... 1,5÷1,7 bar
Total filtration surface: ......................................... 730 cm
2
Total filtration surface for LDW 1204 engine: ..... 1450 cm
2
.
Oil pressure check
Once remounted fill the engine with oil, fuel and coolant.
Remove the pressure switch, fit a union and connect a 10 bar
pressure gauge.
Start the engine and check how pressure is affected by oil
temperature.
Nota: With a maximum operating temperature of 120°C at 900 rpm
the oil pressure must not be less than 1 bar.
Oil pressure regulating valve
Components:
1 Valve
2 Spring
3 Gasket
4 Screw cap
Spring length = 27.50÷27.75 mm
Blow the valve’s seating with compressed air and carefully clean all
the components before remounting them.
Nota: The valve begins to open at a pressure of 4.5÷5.5 bar.
Lubrification circuit

Lombardini LDW 502 Specifications

General

Engine Type	Diesel, 4-stroke
Number of Cylinders	2
Fuel System	Indirect injection
Starting System	Electric start
Lubrication System	Forced lubrication with gear pump
Bore x Stroke	72 mm x 62 mm
Cooling System	Air-cooled
Displacement	505 cm³ (30.8 cu in)