一辆北京BJ2020型吉普车,因所装配的BN492Q型发动机气缸磨损过甚,便更换了气缸套,但换了缸套之后,却出现气缸体内的冷却水渗入曲轴箱(油底壳)内的现象。开始怀疑系漏装缸套密封圈所致。拆检缸盖,逐一取出缸套进一步查看,均未有漏装密封圈情况。 因缸体漏水现象发生在换缸套之后,对有关换缸套作业和配件质量等导致漏水的因素进行分析、检验,如气缸垫损坏、缸体破伤、缸套密封圈变形或失去弹性等,均 A Beijing BJ2020 jeep, because the assembly of the BN492Q-type engine cylinder wear too much, they replaced the cylinder liner, but after the cylinder liner, but there is the cooling water cylinder into the crankcase (oil pan) phenomenon. Doubt Department began to drain cylinder seals caused. Dismantling the cylinder head, one by one out of the cylinder liner for further examination, have not leak seals installed. After the cylinder block leakage occurs in the cylinder liner, on the cylinder liner operations and parts quality led to the analysis of the factors that lead to leakage, such as cylinder pad damage, cylinder damage, cylinder liner deformation or loss of elasticity, etc. ,all