Related Manuals for Man E 2942 LE 302
Summary of Contents for Man E 2942 LE 302
- Page 2 Flat seals / gaskets can be fitted properly only if the following points are observed: D Use only genuine MAN seals / gaskets D The sealing faces must be undamaged and clean D Do not use any sealing agent or adhesive −...
- Page 3 Contents Preface ................. Instructions .
- Page 4 Contents Crankgear, pistons Removing and installing pistons with conrods ..........Removing pistons from conrod and fitting, checking −...
- Page 5 The “4” means 142 mm stroke The “2” indicates the number of cylinders 12 This letter stands for “charge-air cooling” (German: Ladeluftkühlung) The “E” stands for “fitted engine” (German: Einbaumotor) and is intended to distinguish MAN vehicle engines This is a factory-internal development number.
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Page 6: Safety Regulations
Safety regulations General Important safety regulations are summarized in this quick-reference overview and arranged by topic to ef- fectively convey the knowledge necessary to avoid accidents causing injury, damage or environmental haz- ard. Additional information can be found in the operating instructions of the engine. Important: Should an accident occur despite all precautionary measures, particularly one involving contact with corros- ive acid, penetration of fuel under the skin, scalding by hot oil, antifreeze splashing into the eyes etc. - Page 7 Safety regulations D When working on the electrical system, first disconnect the earth cable of the battery and reconnect this last to prevent short circuits. D Follow the manufacturer’s instructions for handling batteries. Caution: Accumulator acid is toxic and caustic. Battery gases are explosive. D When performing welding work, observe the “Notes for welders”.
- Page 8 D If engine operation is disrupted, immediately determine the cause and have it remedied to prevent addi- tional damage. D In every case, use only original MAN spare parts. The installation of parts that are “just as good” but do not originate from MAN can under certain circumstances cause severe damage − for which the work- shop performing the repair must bear responsibility.
- Page 9 Safety regulations 4. Regulations for the prevention of environmental damage Engine oil and filter cartridges D Old oil must be passed on for recycling. D Take extreme care that no oil enters the waste water system or seeps into the ground. Caution:The drinking water supply could be contaminated.
- Page 10 D The regulations applicable to gas installations must be observed. D Exhaust gases are toxic. Comply with the regulations for the installation of MAN indus- trial gas engines for operation in enclosed areas. Ensure adequate ventilation.
- Page 11 Fault table Operating faults and possible causes We recommend A repair is only complete when both the damage that occurred and the possible causes have been elimin- ated. Finding out the cause of damage is often more difficult than repairing the damage that occurred. We therefore recommend that you obtain a precise description of the operating fault before removing and dis- mantling components.
- Page 12 Fault table Starter motor does not turn engine or only slowly (solenoid switch energises (“click” is audible) Starter motor turns, engine does not turn Starter motor turns engine, engine does not start / starts poorly Ignition failure Irregular engine running Engine stalls during operation, no longer starts Engine “shakes”...
- Page 13 Fault table Starter motor does not turn engine or only slowly (solenoid switch energises (“click” is audible) Starter motor turns, engine does not turn Starter motor turns engine, engine does not start / starts poorly Ignition failure Irregular engine running Engine stalls during operation, no longer starts Engine “shakes”...
- Page 14 General notes on engine overhaul The service life of an engine is influenced by very different factors. It is therefore not possible to specify certain fixed numbers of operating hours for general overhauls. In our view, it is not necessary to open up and engine or perform a general overhaul as long as the engine has good compression values and the following operating values have not changed significantly in relation to the values measured on commissioning the engine: D Charging pressure...
- Page 15 Illustrations of E 2842 LE 302 / E 2842 LE 312 engine Illustrations of engine E 2842 LE 302 / E 2842 LE 312...
- Page 16 Engine lubrication schedule 1 Rocker arm lubrication 6 Oil overpressure valve 2 Piston bolt lubrication 7 Oil cooler 3 Spray nozzles for piston cooling 8 Bypass valve 4 Camshaft bearing lubrication 9 Oil filter 5 Oil intake pipe 10 Main oil channels...
- Page 17 Engine lubrication schedule 1 Lubrication oil lines to the exhaust turbochargers 5 Oil pump with oil-pressure relief valve 2 Oil return from exhaust turbochargers 6 Bore holes for conrod bearing lubrication 3 Oil line to crankshaft 7 Oil intake pipe 4 Bore holes to main bearing lubrication...
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