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Commissioning after engine overhaul

14

Pressurising an engine affords the following advantages:

D

All engine parts are lubricated before engine startup; a lubricating film can be built up inside the bear-
ings as early as after the first few rotations of the crankshaft, thereby preventing damage to the bearing
races.

D

Any loss of oil, be it the result of excessively large bearing play or leaks from the crankcase or from
crankcase bores which may not be plugged, can be detected immediately. For this purpose, mount the
engine on an assembly dolly, remove the oil pan and install a suitable oil collector under the crankcase
in such a way that the bearings are visible

Performance of pressurisation:
At least 30% of the total oil quantity is forced from the pressurisation container into the engine oil circuit.
The operating pressure serves as the yardstick for the pressure to be forced in and must not be exceeded.

The pressurisation container is connected up to the engine oil circuit at the oil filter head screw plug).

Summary of Contents for D 2876 LE 201

Page 1: ......

Page 2: ...gasket is shifted during operation by the so called stitching or sewing machine effect and leaks occur Example The cap of the front crankshaft seal If a sealing agent or an adhesive is used here the f...

Page 3: ...asked with protective tape again after wards The following pipes are affected Oil supply pipe to turbochargers Fuel pipes between supply pump filter and injection pump Injection pipes protected agains...

Page 4: ...vicing the oil filter 45 Removing and installing the oil cooler 46 Removing and installing repairing oil pump 47 Removing and installing the oil spray nozzle 50 Flywheel Crankshaft seals Removing and...

Page 5: ...oving and installing piston rings 109 Replacing cylinder liners 111 Measuring piston protrusion 115 Attachments Removing and installing the starter motor 116 Servicing V belts 117 Electronic speed gov...

Page 6: ...rised persons D The engine may only be started and operated by authorised personnel D When the engine is running do not get too close to the rotating parts Wear tight fitting working clothes D Do not...

Page 7: ...propriate notices must be attached to engines that are not ready for operation D Use only MAN approved service products fuel engine oil anti freeze and anti corrosion agent Pay attention to cleanlines...

Page 8: ...ents creams etc or wear protective gloves D Clean skin which has been in contact with engine oil Wash thoroughly with soap and water A nail brush provides effective assistance here Certain products ma...

Page 9: ...probable causes and in vestigate and eliminate these successively on the basis of the table and your own experience This helps to reduce repairs to the required scale and to counteract claims regardi...

Page 10: ...Thank you very much for your reading Please click here and go back to the website Then you can download the complete manual instantly No waiting...

Page 11: ...ged x Fuel filter clogged with paraffin see Fuels Lubricants x Fuel temperature too high x x x x x x Unsuitable fuel see Fuels Lubricants x Fuel is slow to ignite see Fuels Lubricants x x Suction heig...

Page 12: ...ator heavily contaminated x V belt for water pump drive not correctly tensioned slipping x Water pump leaky defective bearing damage x Coolant circuit clogged by foreign matter x Temperature indicator...

Page 13: ...perature D Oil pressure and oil consumption D Smoke emissions The following criteria greatly influence the length of the engine service life D Correct power output setting according to the type of app...

Page 14: ...aining damage and its causes If engines are not pressurised the risk of premature damage to bearing surfaces is very high because it takes a relatively long period of time for the lubricating oil draw...

Page 15: ...case or from crankcase bores which may not be plugged can be detected immediately For this purpose mount the engine on an assembly dolly remove the oil pan and install a suitable oil collector under t...

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