斯堪尼亚柴油发电机 斯堪尼亚柴油发电机组维修 斯堪尼亚柴油发

1、斯堪尼亚柴油发电机组维修保养柴油机使用保养注意事项F6L912柴油机的使用、调整、维护保养和主要零部件的结构与拆装方法在其使用保养说明书中都有阐述，本文仅就实际维修中，说明书中没有提及以及需强调的几点作如下介绍。（1）按说明书介绍， F6L912风冷柴油机使用的冷却活塞用的机油喷嘴是长的，但实际拆栓过程中，发现北内厂生产的 F6L912型风冷柴油机使用的机油冷却喷嘴是短的。在机器装配前应疏通喷油嘴孔，保证机油喷到活塞 上，降低活塞的温度，保证机器正常运转。（2）因产轴承盖与机体上主轴承座是经主轴承螺栓按拧紧要求拧紧后，组合加工的。二者之间用定位套定位，因此主轴承盖不能随意换装，也不能装反，以免

2、影响主轴承瓦与轴径的配合间隙，破坏润滑油膜的形成。（3）注意检查缸盖“鼻梁区”是否开裂，应及时查明原因，是散热片不及时清洁灰尘，长时间超负荷，还是供油时间不正确，风扇冷却效果不好，还是其他原因，以免造成机器的损伤。（4）缸盖螺栓，连杆螺栓、平衡块螺栓、主轴承螺栓都属于重要的部件的螺栓，均属高强度螺栓，在安装时不要装弹簧垫片和止推垫片，大修期要检查缸盖螺栓和拉伸变形，缸盖螺栓原始长度211±0.5mm，使用后变长到212.5mm就有能再用，应换新的，拧紧螺栓进尽量采用六个面的套筒板手拧紧，不要用十二个面的，因其强度较差，易滑转，连杆螺栓原则上是最好只用一次。（5）如南非磨削主轴径，应拆

3、卸配重块才能进行，在拆卸配重块时，需标记配重块的序号及方向，以免装错，破坏曲轴的平衡，而且平衡块螺栓在拆下后应当换新螺栓安装。（6）油环衬簧安装时要把接口搭接牢固，应使其两端反向扭曲再搭接到位，且使接口和油环开口呈180º角的位置安放。（7）在拆检过程中，发现有发动机进排气门导管上未安装气门杆密封圈，结果造成机油损耗增加，发动机冒蓝烟，在装配过程中，一定要在气门导管上安装耐油耐温的丙烯酸胶橡胶气杆密封圈。（8）在F6L912型风冷发动机的排气门上安装有气门旋转机构，在安装有气门旋转机构，在安装时切勿安错，通过这一装置使气门工作时缓慢旋转，在密封锥面上产生轻微磨擦，有自洁作用，防止沉积

4、物的形成，减轻不均匀磨损，使气门头部沿圆周温度均匀，减小气门变形的可能性，同时气门导管内的润滑情况也能得到改善。（9） F6L912柴油机的气门弹簧是变螺距的，安装时密圈的一端放在下部，如果装反，增振趋势会加大，会增加气门导管的磨损。（10）在喷油泵齿轮上有两种标记：“·”和“：”，在 F6L912发动机安装时，应当把“·”标记与惰轮“··”对正。（11）进排气间隙与135等其它系列发动机间隙不一致，标准间隙为0.15mm。（12）在推杆护管的上下部连接处采用圆断面的橡胶圈密封，上部采用的是黑色或绿色的氟橡胶或氯橡胶圈，其耐温性能为-40ºC2

5、60ºC，而下部则采用粉红色的硅橡胶密封圈，其耐温性能为-20ºC+150ºC，在安装下部弹簧时需用专门的安装工具，如果没有专用工具，可以用0.6-0.8mm左右的细铁丝瘵事先穿在护管上且压缩好的弹簧绑好，待导管和油封安装正确，紧固完缸盖后，再将铁丝取出，弹簧即自动压紧油封，实践证明，这种做法效果很好。（13）在拆卸缸盖螺栓时，每个缸盖有两个栓用普通17mm的套筒无法拆卸，因为孔小套筒大，可以采用市售的17mm的套筒，用车床去外圆1mm左右，即可伸入缸盖是部拆卸螺栓。（14）曲轴皮带轮前端的锁紧螺栓为左旋（说明书未注），无锁片，在拆卸时须弄清旋向，以免“越卸越紧”

6、。（15）说明书在介绍凸轮轴时，未能指出凸轮轴只是有第一轴径（靠近正齿轮室端）有轴瓦，其余各轴径由于有存油道，没有凸轮轴瓦。（16）在更换分离轴径时，可用东风汽车分离轴承360111去代替，而且效果良好。（17）抽出喷油器总成时，如没有专用工具可做如下的工具，在工具的一端车出内螺纹与喷油器螺纹相配，中间焊有610mm×400mm的圆钢，把650mm×100mm的圆钢中间钻610.5mm的孔，然后套在610mm圆钢上，最后在610mm圆钢的另一端焊上50mm×10mm的大平垫，通过650mm圆钢移动撞击的惯性，即呆取出喷油器。（18）说明书上未介绍气门导管的拆卸方法

7、，由于气门导管外圆上有一卡环，只能从一个方向拆下气门导管，拆卸时把缸盖翻过来，用适合的工具即可打出导管，如方向弄错不仅打不出导管，还有可能损坏缸盖。Scania diesel generator set maintenanceF6L912 diesel engine use, adjustment, maintenance and disassembly for maintenance and major parts have described the use of maintenance manuals, This article will discuss the actual repai

8、r manual does not mention as well as points to be emphasized that the following description is .(1) according to the instructions, F6L912 air cooled diesel engine cooling piston oil nozzle is long, but the actual process of demolition bolt, factory production in the North within F6L912-type air-cool

9、ed diesel engine oil cooling nozzle is short. Should clear the nozzle hole in front of the machine assembly to ensure that the oil spray on the pistonto reduce piston temperature, to ensure the normal operation of the machine.(2) the production bearing cap and bearing on the body by the main bearing

10、 bolts Tighten Tighten the requirements, the combination of processing. The positioning sleeve positioned between the main bearing cap can not be casual dress, can not hold against, so as not to affect the main bearing pad and shaft diameter with the gap, undermining the formation of lubricant film.

11、Note (3) Check the cylinder head the "bridge of the nose area" is cracking, it is timely to identify the reasons for the heat sink is not timely cleaner dust, long overload or injection timing is not correct, the fan cooling effect, or for other reasons. in order to avoid machine damage.(4

12、) cylinder head bolts, rod bolts, balanced block bolt main bearing bolts are important parts of the bolt, high strength bolts are in the installation do not install the spring washer and thrust washer, overhaul of the check try to tighten the bolt into the six faces of the wrench cylinder head bolts

13、, and tensile deformation, the original length of the cylinder head bolts 211 ± 0.5mm longer to 212.5mm there longer use, should be renewed Tighten, do not use the 12 faces, because of its strength is poor, easy to slip on the principle of connecting rod bolt is best used only once.(5) South Af

14、rica grinding spindle diameter should be demolished with weights to carry out the demolition with weights, you need to mark the serial number and direction of the weight block, in order to avoid wrong and undermine the balance of the crankshaft and balanced block bolts removed should be a new bolt i

15、nstallation.(6) the installation of the oil ring lining spring should overlap solid interface should be the reverse distorted lap in place, and the interface and the oil ring opening was the location of 180 º angle placed at both ends.(7) in the dismantling process, found that the valve stem se

16、als not installed on the engine intake and exhaust valve catheter, resulting in the increase in oil loss, the engine take Lanyan in the assembly process, be sure to install the oil temperature in the valve guide acrylic adhesive rubber pneumatic rod seals.(8) in the F6L912 type air-cooled engine exh

17、aust valve installed valve rotary mechanism, a valve rotating body is installed, Never An error during installation, this device so that the valve when rotated slowly, in a sealed cone slight friction, self-cleaning, to prevent the formation of sediments, reduce uneven wear and tear, the valve head

18、along the circumferential temperature uniformity, reducing the possibility of valve deformation, within the valve guide lubrication can be improved.(9) F6L912 diesel engine valve spring is a variable pitch, close the circle end of the installation on the lower part, if you hold against the trend of

19、increased vibration will increase will increase the wear of the valve guide.(10) in the injection pump gear, there are two tags: "" and ":" F6L912 engine installation, it should be "" mark and idler " " on the positive.(11) into the exhaust clearance and 135 s

20、eries engines gap inconsistent standard gap of 0.15mm.(12) in the putter retaining tube of up and down the Ministry of connection at the use of circular cross-section of the rubber ring seal, the upper part of using the black or green fluorine rubber or chlorine rubber ring, its temperature performa

21、nce of -40 º C,-260 º C, while the lower part is adopted pink silicon rubber seals, the temperature performance of -20 º C to +150 º C, special installation tools required when installing the lower part of the spring, if there is no special tools, you can use 0.6 - 0.8mm thin wir

22、e around Zhai prior to wear a good spring and compression tied until the catheter and seals are installed correctly, tighten the cylinder head after completion, and then wire to remove the protective tube, the spring automatically pressed oil seal Practice has proved that the effect of this practice

23、 very better.(13) in the disassembly of the cylinder head bolts per cylinder head two bolt can not be removed with ordinary 17mm sleeve, the sleeve large hole is small, you can use a commercially available 17mm sleeve with a lathe to cylindrical 1mm so, can be inserted into the cylinder head is the

24、Ministry of demolition bolt.(14) crankshaft pulley front of the locking bolt is L (the manual does not note), the locking tab in the demolition required to clarify the direction of rotation, so that "the more unloading and more tightly.(15) manual introduced camshaft, unable to point to the camshaft only the first shaft diameter (near the gear chamber side) bearing, the rest of the shaft diameter because of the oil remaining in the Road, camshaft watts.(16) to replace the separation of shaft diameter, available Dongfeng Motor separation bearing 360,111 to replace, but the effect is good.