390F Excavator C18 Engine Supplement Caterpillar


Temperature Sensor (Catalyst Inlet) - Remove and Install

Usage:

390F HNG

拆卸步骤

表 1
所需工具    
工具     零件号     零件描述     数量    
A     -     Loctite 771     -    
B     -     Loctite C5-A 铜防粘结剂     -    

开始:

  1. 拆下发动机护罩。
  2. 拆下氮氧化物传感器。

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

高温发动机部件可能导致灼伤。 进行发动机保养之前让发动机和部件冷却下来。


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

在处理用过的柴油微粒滤清器或催化转化器消声器时,请配戴护目镜、手套、防护服以及经过职业安全与健康管理局(NIOSH)批准的 P95 或 N95 半面式防尘面罩。 否则可能造成人身伤害。





    图 1g03609742

  1. 拆下夹子 (2) ,然后断开线束组件 (1) 。



    图 2g03609761



    图 3g03609764

  1. 松开带箍 (3) 。 断开卡箍组件 (4) 。

  1. 连接适当的起吊设备以提升催化器(SCR) (5) 。 催化器(SCR) (5) 的重量约为 53 kg (117 lb)。 提升催化器(SCR) (5) 大约 3 in。

  1. 拆下温度传感器 (6) 。

安装步骤

  1. 按与拆卸相反的顺序安装温度传感器 (6) 。

    1. 将工具 (B) 涂抹到温度传感器 (6) 的螺纹上。

    1. 将温度传感器 (6) 拧紧至扭矩为 45 ± 5 N·m (33 ± 4 lb ft)。



      图 4g02849250

      典型示例

      注: 切勿使用电动工具拧紧卡箍组件 (4) 。

    1. 沿距离 (X) 向卡箍组件 (4) 的螺纹上涂覆工具 (A) 。 距离 (X) 高出耳轴 25 mm (1 in)。 将卡箍组件 (4) 拧紧至扭矩为 16.5 ± 1.5 N·m (146 ± 13 lb in)。



      图 5g03386044

      组装时就位的带箍 (3) 的剖面图。

      注: 切勿使用电动工具拧紧带箍 (3) 。

    1. 确认球头 (G) 的球头座不接触球 (F) 的半径。 定位带箍 (3) ,然后用手拧紧带箍 (3) 。 带箍 (3) 应位于接头的中央。

    1. 尺寸 (C) 和尺寸 (D) 之间的差值应当在 2.0 mm (0.08 in) 的范围内。 沿带箍 (3) 四周以 90° 的间隔重复测量。 必要时,调整带箍 (3) 。

    1. 将带箍 (3) 拧紧至扭矩为 35 ± 2 N·m (26 ± 1 lb ft)。

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