求翻译：卸下高压油管，使油门处于停止供油位置，用手油泵泵油数次，喷油泵顶部油管接头处没有柴油溢出，则表明出油阀密封性良好；反之，则已损坏，需要修理或更换。是什么意思？

Remove the high pressure tubing, so that the throttle to stop the fuel supply position in the hand pump pumps oil several times, no diesel fuel injection pump at the top of tubing joints overflow, indicates that the tightness of the oil valve is good; the contrary, they have been damaged, in need of

Remove the high-voltage lines, throttle stop for fuel in place, using the hand pump oil injection pump several times, top fuel line fittings, there is no diesel fuel spilled, it indicates that the outlet valve seal of good; And conversely, it is corrupted, you need to repair or replace.

Dismounts the high-pressure oil pipe, causes the accelerator to be in the stop feed position, with the hand oil pump oil pumping several times, the injection pump crown oil pipe connection place did not have the diesel oil overflow, then indicated the delivery valve leak-proof quality was good; Othe

Remove the high pressure tubing, throttle at stop location for oil, oil pump with your hand several times, at the top of the injection pump tubing connector does not overflow of diesel, then good outlet valve seal, but is corrupt, in need of repair or replacement.

正在翻译，请等待...