Moteurs Baudouin 12M26 Series, Руководство по эксплуатации и техническому обслуживанию

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Operation & Maintenance Manual for 12M26 Series Gas Engine
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work of all components. Pressure limiting valve both bypass valve role, when the oil pump oil
pressure exceeds the predetermined value, the pressure limiting valve call, part of the oil flow to
the oil pan, thereby reducing the oil pressure. Pressure limiting valve by the spring to adjust the
oil pressure, the spring preload factory has been adjusted, the user generally do not need to adjust.
（
2
）
The performance of engine oil pump mainly depends on the clearance (end clearance and
radial clearance) between oil pump gear and casing. When the clearance is overlarge, the engine
oil will leak seriously, and the engine oil pressure will drop and the oil volume will decrease.
When the clearance is undersize, the gear will wear out seriously.
（ 3 ） If the oil supply pressure drops, the oil pump shall be maintained when the other engine
faults are eliminated. When maintaining an engine oil pump, the maintenance personnel shall
observe the oil pump for oil leak and burn first. If there is no oil leak or burn, the maintenance
personnel shall check the pressure relief valve and disassemble the oil pump. Check whether the
spring of pressure relief valve is softened or whether the gear, pump body or end cap is worn
seriously. Replace the oil pump if necessary.
（
4
）
If the oil pressure is overhigh, the pressure relief valve shall be disassembled for inspection.
on The most important is to inspect whether the pressure relief valve can be opened or not.
（
5
）
Be careful not to damage the end cap, pump body junction surface and each locating pin
when disassembling and reassembling an oil pump.
4.6.6 Operation and maintenance of air filter
Warning! The service life of your engine may be shortened greatly due to wrong maintenance
methods.
（ 1 ） The air filter shall match the performance index of engine in a strict way; otherwise, the
dynamic property and economy performance of engine will be influenced.
（
2
）
If the air filter is provided with a warning device, the warning device shall be observed first
before the natural gas engine is started. When the intake resistance indicator give an alarm (turns
red), the air filter element shall be maintained.
（
3
）
The filter adopting multistage filtration technology must be provided with a coarse strainer.
（
4
）
When mounting the dust exhausting pipe, the pipe shall not be bend sharply and shall be
free from air leakage.
（ 5 ） Prevent water from entering into the air filter.
（ 6 ） When maintaining an air filter with a safety filter element, do not disassemble the safety
filter element.
（ 7 ） In normal working conditions, the paper main filter element of fine filter shall be
maintained once every 100 to 200 operation hours of engine. Remove the main filter element and
tap or shake off the dust inside. Check each sealing element of it and replace any damaged one.
The clean and dry compressed air not exceeding 500kpa may be used from blowing from inside of
filter element. Put a lit bulb inside the filter element and observe externally whether any light can