3500B and 3500B High Displacement Generator Set Engines Caterpillar


Radiator and Cooling System - Test

Usage:

3512B 2EZ


图 1g01024208
(1) 散热器顶部水箱
(2) 膨胀箱

------ WARNING! ------

蒸汽或热冷却液可能导致严重灼伤。

不要松动热发动机的加注口盖。

拆下加注口盖盖之前,让发动机冷却下来。


简介

使用此步骤检查发动机冷却系统的状况。

所需工具

表 1
所需工具  数量 
9S-8140 加压泵 

测试准备

------ WARNING! ------

溢出的带压液体可能导致人身伤害。

如果压力表上显示有压力值,从散热器上拆卸任何软管之前,应先按压放气阀来释放压力。


  1. 关闭发动机。

  2. 让发动机冷却。

  3. 缓慢松开散热器盖,让压力从冷却系统中排出。

  4. 拆下散热器盖。

测试步骤

  1. 仔细检查散热器盖的部件。 检查密封件或散热器加注口颈处的密封表面有无损坏。 清洁密封件和密封表面累积的所有异物和碎屑。

  2. 检查散热器冷却液液位。 冷却液液位必须高于散热器芯的顶部。

  3. 将散热器盖安装到加注口颈部。


    图 2g00286374
    9S-8140 加压泵
    (3) 分离阀
    (4) 适配器
    (5) 软管

  4. 从适配器 (4) 上拆下软管 (5)。


    图 3g00286375

  5. 找到散热器顶部油箱中的压力测试端口。 拆下测试端口螺塞。

  6. 将软管 (5) 安装到压力测试端口处。

  7. 使用加压泵为冷却系统加压。 加压冷却系统,直到散热器压力盖开始排放系统压力。 加压泵压力表上指示的最高压力是开启盖中的安全阀的压力值。 将测试压力与散热器盖上压印的开启压力值相比较。

  8. 如果安全阀没有在盖上压印的压力值范围内开启,则安全阀有故障。 更换散热器盖。

  9. 如果安全阀根据技术规格密封冷却系统,则散热器盖正常。

  10. 释放冷却系统压力之前,先对冷却系统进行绕行检查。 检查所有软管、软管连接和管道有无外部泄漏。

  11. 让冷却系统保持加压 5 分钟,以检查有无内部泄漏。 如果加压泵压力表上指示的压力在 5 分钟内降低,则可能有内部泄漏。 查明故障原因。 进行必要的修理。

  12. 从冷却系统上拆下加压泵。 更换测试端口螺栓。

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