1、检查发现水散热器表面清洁，水温传感器和水温表灵敏准确，节温器能够正常启闭，发动机运转平稳有力，但冷却风扇转速稍慢。
Inspection found water radiator surface clean, temperature sensors, and temperature sensitive and accurate table, the thermostat can open and close properly, smooth and powerful engine is running,but the cooling fan speed slower.
2、用压力表检测冷却风扇驱动泵输出压力偏低，调整泵压力调节器调整螺栓，压力没有变化。
The cooling fan driven by pressure gauges to detect pump output pressure is low, adjust the pump pressure regulator adjusting screw, the pressure does not change.
3、将压力调节器拆解、清洗、检查，未发现异常。对泵进行拆解、清洗、检查，也未发现异常。
The pressure regulator disassembled, cleaned, inspected, and found no abnormalities. The pump dismantling, cleaning, inspection, and found no abnormalities.
4、将风扇马达拆解、清洗、检查，发现风扇马达磨损严重，更换风扇马达后试机，20分钟后发动机水温依然正常。
The fan motor dismantling, cleaning, inspection, found that the fan motor badly worn, replace the fan motor testmachine, 20 minutes after the engine temperature remained normal.