793D Off-Highway Truck Air System and Brakes Caterpillar


Service and Parking Brake (Front)

Usage:

793D FDB



图 1g00294219



图 2g00103659

剖面 A-A




图 3g00103660

剖面 B-B

(1) 将车轮装到机器上时,螺塞装装在前侧端口套件与顶侧端口套件中。

(2) 44 个螺栓的扭矩 ... 500 ± 50 N·m (370 ± 37 lb ft)

(3) 8 个螺柱的扭矩 ... 100 ± 15 N·m (75 ± 11 lb ft)

(4) 8 个螺母的扭矩 ... 270 ± 25 N·m (200 ± 18 lb ft)

注: 将每个螺母 (4) 的扭矩拧紧至一转,然后均匀地向下拉动壳体。 当所有螺母底部伸出时,按照图 1 所示字母顺序将螺母拧紧至指定扭矩。

(5) 将车轮装到机器上时,螺塞装在底部端口中。

注: 组装时,橡胶双曲面密封圈及其所接触的所有表面都必须洁净。 组装时,让橡胶双曲面密封圈及其所接触的所有表面晾干。 在即将组装前,在橡胶双曲面密封圈所有接触面上涂上一薄层机油。 密封圈必须正好装在孔中。 橡胶双曲面密封圈不得扭曲。 不得膨胀橡胶双曲面密封圈。

(6) 12 个螺柱的扭矩 ... 100 ± 15 N·m (75 ± 11 lb ft)

(7) 12 个螺母的扭矩 ... 270 ± 25 N·m (200 ± 18 lb ft)

注: 将每个螺母 (7) 的扭矩拧紧至一转,然后均匀地向下拉动壳体。 当所有螺母底部伸出时,以交叉模式拧紧螺母至规定扭矩。

(8) 组装的制动器组件

10 块新摩片、9 块新板片和 2 个减振器组件的厚度 ... 86.24 ± 1.88 mm (3.395 ± .074 in)
一块新 226-2826 摩擦盘 的厚度 ... 5.08 ± 0.08 mm (0.200 ± 0.003 in)
一块新 8W-021 板片 的厚度 ... 2.413 ± 0.064 mm (0.0950 ± 0.0025 in)
一个新 6G-6500 减振器组件 的厚度 ... 6.86 ± 0.25 mm (0.270 ± 0.010 in)

注: 安装减振器组件,使覆面材料面向板和活塞。

注: 组装时,利用制动器内使用的油润滑摩擦盘。 有关此信息,请参阅操作和保养手册润滑剂粘, "度"。

(9) 44 个螺栓的扭矩 ... 500 ± 50 N·m (370 ± 37 lb ft)

(10) 9D-6093 弹簧 ((外))

数量 ... 46
测试长度 ... 90.5 mm (3.56 in)
试验力 ... 4235 ± 169 N (952 ± 38 lb)
试验后的自由长度 ... 116.5 mm (4.59 in)
外径 ... 46.02 mm (1.812 in)

(11) 9D-6135 弹簧 ((内))

数量 ... 42
测试长度 ... 90.50 mm (3.563 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)

(12) 9D-9121 弹簧 (复位)

数量 ... 4
测试长度 ... 74.90 mm (2.949 in)
试验力 ... 890 ± 27 N (200 ± 6 lb)
试验后的自由长度 ... 91.13 mm (3.588 in)
外径 ... 26.59 mm (1.047 in)

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