735, 740 GC, 740 EJECTOR, 745 Articulated Trucks Engine Supplement Caterpillar


Catalyst - Remove and Install

Usage:

745 3F6

拆卸步骤

表 1
所需工具 
工具  零件号  零件描述  数量 
LOCTITE 镍基防咬合剂 

开始:

  1. 拆下清洁排放模块。


    图 1g03689250

  1. 断开温度传感器 (1)。


    图 2g03689273

  2. 将适当的起吊设备连接到催化器上。 催化器的重量约为 50 kg (110 lb)。 拆下卡箍 (2) 和螺母 (3)。 拆下催化器。


    图 3g03689328

  3. 拆下卡箍 (4) 和卡箍 (5)。

  4. 将卡箍 (6) 从催化器 (7) 上拆下。

安装步骤

  1. 按与拆卸相反的顺序安装催化器 (7)。

    1. 将卡箍 (5) 拧紧至扭矩为 55 ± 8 N·m (41 ± 6 lb ft)

    2. 将卡箍 (4) 拧紧至扭矩为 20 ± 4 N·m (177 ± 35 lb in)

    3. 拧紧螺母 (3) 至扭矩为 15 ± 3 N·m (133 ± 27 lb in)。 拧紧扎带,保持 4 mm (0.15 inch) 的最小间隙。

    4. 将卡箍 (2) 拧紧至扭矩为 35 ± 2 N·m (26 ± 1.5 lb ft)

    5. 在传感器 (1) 的螺纹上涂覆工具 (A)。 将传感器 (1) 拧紧至扭矩为 45 ± 5 N·m (33 ± 4 lb ft)

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