773D Off-Highway Truck and 775D Quarry Truck Air System and Brakes Caterpillar


Service and Parking Brake (Rear)

Usage:

773D 7CS



图 1g01826619

注: 组装过程中,将适配器 (6) 、O 形密封圈 (7) 和排气螺钉 (8) 安装在机器顶部的端口上。

(1) 五个锥形锁紧双头螺栓的扭矩 ... 110 ± 20 N·m (81 ± 15 lb ft)

注: 将每个螺母 (2) 拧紧一转,以便均匀地拉下壳体。 在所有螺母落座后,以交叉模式将螺母拧紧至规定的扭矩。

(2) 5只螺母的扭矩 ... 300 ± 15 N·m (221 ± 11 lb ft)

(3) 35 只螺栓的扭矩 ... 310 ± 25 N·m (229 ± 18 lb ft)

(4) 33 只全高螺母的扭矩 ... 750 ± 90 N·m (553 ± 66 lb ft)

(5) 33 个锥形锁紧双头螺栓的扭矩 ... 260 ± 40 N·m (192 ± 30 lb ft)




图 2g01826788

(9) 9D-6135 弹簧

在试验力下的长度 ... 90.5 mm (3.56 in)
试验力 ... 1535 ± 44 N (345 ± 10 lb)
试验后的自由长度 ... 115.49 mm (4.547 in)
外径 ... 26.59 mm (1.047 in)

(10) 9D-6093 弹簧

在试验力下的长度 ... 90.5 mm (3.56 in)
试验力 ... 4235 ± 254 N (952 ± 57 lb)
试验后的自由长度 ... 116.5 mm (4.59 in)
外径 ... 46.02 mm (1.812 in)

(11) 安装时,橡胶曲面密封和所有接触面必须清洁干燥。 组装前,在金属密封圈的接触面上涂抹一薄层 6V-4876 润滑剂 。 密封圈必须正好装在孔中。 橡胶曲面密封不能膨胀也不能扭歪。

(12) 九个锥形锁紧双头螺栓的扭矩 ... 110 ± 20 N·m (81 ± 15 lb ft)

注: 将每个螺母 (13) 拧紧一转,以便均匀地拉下壳体。 在所有螺母落座后,以交叉模式将螺母拧紧至规定的扭矩。

(13) 九只螺母的扭矩 ... 300 ± 15 N·m (221 ± 11 lb ft)

(14) 9D-9121 弹簧

在试验力下的长度 ... 74.9 mm (2.95 in)
试验力 ... 890 ± 27 N (200 ± 6 lb)
试验后的自由长度 ... 91.14 mm (3.588 in)
外径 ... 26.59 mm (1.047 in)

(15) 35 只螺栓的扭矩 ... 310 ± 25 N·m (229 ± 18 lb ft)

注: 安装一个减震器,使摩擦材料朝向板。 安装一个减震器,使摩擦材料朝向活塞。

(16) 组装后的制动组件

9 个新摩擦盘、2 个新减震器和 8 个新外板的厚度 ... 78.744 ± 2.182 mm (3.1002 ± 0.0859 in)
1 块新摩擦盘的厚度 ... 5.08 ± 0.13 mm (0.200 ± 0.005 in)
一个新减震器的厚度 ... 6.86 ± 0.25 mm (0.270 ± 0.010 in)
单块新外板的厚度 ... 2.413 ± 0.064 mm (0.0950 ± 0.0025 in)

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