1. Adjustment of valve foot clearance: during the normal operation of various parts of the valve arrangement, the valve foot clearance will be changed with the wear of parts. For example, after the cam, valve stem end face and tappet contact surface are worn, the open space will become larger, while after the valve head and valve seat are worn, the open space will become smaller. Therefore, the base value of the open space should be taken in the adjustment.

2、氣門座的鉸削：氣門座鉸削通常為手作業(yè)業(yè)，應(yīng)格外重視三個(gè)疑問：一是在凹陷、斑駁，能鉸出無缺錐面的基礎(chǔ)上，鉸削量越小越好；二是鉸削時(shí)用力要均勻，起刀收刀要輕，少鉸多調(diào)查，以保證較少的鉸削量和較高的光潔度;三是與氣門試配，判定好作業(yè)面方位和寬度。

2. Valve seat reaming: valve seat reaming is usually manual operation, so we should pay special attention to three questions: first, on the basis of eliminating depression and mottle and being able to ream out a perfect cone, the smaller the reaming amount, the better; Second, the force during reaming shall be uniform, the starting and closing of the knife shall be light, less reaming and more investigation, so as to ensure less reaming amount and higher finish; Third, trial fit with the valve to determine the orientation and width of the working surface.

3、自動(dòng)攪拌車修補(bǔ)質(zhì)量差在修補(bǔ)作業(yè)中出色的疑問是氣門與氣門座作業(yè)面加工質(zhì)量達(dá)不到懇求，構(gòu)成作業(yè)面燒蝕、凹陷而前期損壞；凸輪軸軸承在刮削中其協(xié)作空地、接觸面積、各軸承同心度達(dá)不到懇求，加速磨損，呈現(xiàn)異響構(gòu)成前期損壞；氣門導(dǎo)管在更換新件時(shí)，鉸削質(zhì)量達(dá)不到規(guī)矩懇求，直接影響氣門及氣門座運(yùn)用壽數(shù)。

3. The repair quality of automatic mixer truck is poor. The outstanding question in the repair operation is that the processing quality of the working surface of valve and valve seat can not meet the requirements, which constitutes the ablation and depression of the working surface and early damage; During the scraping of camshaft bearing, its cooperation space, contact area and concentricity of each bearing can not reach the request, which accelerates the wear and presents abnormal noise, resulting in early damage; When the valve guide is replaced with a new part, the reaming quality can not meet the requirements, which directly affects the service life of the valve and valve seat.

自動(dòng)攪拌車用戶購(gòu)買多大載重量的自上攪拌鏟車要本著實(shí)用夠用的原則，不用于挖掘用于搬運(yùn)大量松散材料根據(jù)作業(yè)量的大小來確定：既不能過大也不能過小，過大造成浪費(fèi)、過小則不夠使用。變速箱濾清器堵塞液力傳動(dòng)油濾清器堵塞，致使供油不暢，也會(huì)導(dǎo)致變速箱油壓過低，應(yīng)查找堵塞原因，及時(shí)更換新的油液和濾清器。

The self-propelled mixing forklift with a large load capacity purchased by the user of the automatic mixing truck shall be based on the principle of practicality and sufficiency, and shall not be used for excavation and handling a large amount of loose materials. It shall be determined according to the size of the operation volume: it shall not be too large or too small, which will cause waste and too small will not be enough for use. The transmission filter is blocked and the hydraulic transmission oil filter is blocked, resulting in poor oil supply and low transmission oil pressure. Find out the cause of the blockage and replace the oil and filter in time.

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