Such as whether the bolt is tightened, the piston ring is installed correctly, damaged oil seal is replaced, etc.
譬如螺栓是否拧紧，活塞环安装是否正确，损坏油封是否更换等。
Loosen oil pan bolts and remove the front bolt at each side.
松动油底壳螺栓，拆下每一面的前螺栓。
According to actual case of thermal recovery in oil field, strengths were checked on pretighten force and working state, and the rigidity was test for failure bolt.
根据油田热采现场的实际应用情况，对失效螺栓进行了预紧状态以及操作状态的强度校核，并进行了硬度测试。
A bush is fitted into the bolt hole in such a manner as to prevent the bolt hole from establishing communication between the plurality of oil passages.
衬套以防止螺栓孔在数个油道之间形成连通的方式安装到所述螺栓孔中。
The results show that the failure of oil-cooler is bolt-like dezincification corrosion.
结果表明，冷油器铜管的腐蚀属于栓状脱锌腐蚀。
The results show that the failure of oil-cooler is bolt-like dezincification corrosion.
结果表明，冷油器铜管的腐蚀属于栓状脱锌腐蚀。
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