795F AC and 795F AC XQ Off-Highway Truck Hydraulic System and Brakes Caterpillar


Service and Parking Brake (Front)

Usage:

795F AC ERM



图 1g01955065

注: 将行车和停车制动器总成安装在机器左侧中时,仅拆下 O 形圈塞堵 (1) 和 O 形密封圈 (2) 。

注: 将行车和停车制动器总成安装在机器右侧中时,仅拆下 O 形圈塞堵 (3) 和 O 形密封圈 (4) 。




图 2g01955062

剖面 A-A

(7) 两个新减振器、九块新外板和十片新摩擦片的厚度是 113.40 ± 2.02 mm (4.465 ± 0.080 in)。

一个新 145-5192 减振器 的厚度 ... 8.45 ± 0.25 mm (0.333 ± 0.010'')
一块新 145-5189 外板 的厚度 ... 4.00 ± 0.08 mm (0.157 ± 0.003'')
一片新 291-2902 摩擦片 的厚度 ... 6.05 ± 0.08 mm (0.238 ± 0.003 in)

注: 安装减振器,使覆面材料面朝板 (8) 。 安装其他减振器,使覆面材料面朝活塞 (6) 。

注: 组装时,利用制动器内使用的机油润滑摩擦片。 有关制动器机油的信息,请参阅操作和保养手册, "润滑剂粘度"。

(9) 60 根螺栓的扭矩 ... 900 ± 100 N·m (664 ± 74 lb ft)

(10) 9D-6135 弹簧

在测试力下的长度 ... 90.5 mm (3.56 in)
测试力 ... 1535 ± 44 N (345 ± 10 lb)
测试后的自由长度 ... 115.49 mm (4.547 in)
外径 ... 26.59 mm (1.047 in)

(11) 9D-6093 弹簧

在测试力下的长度 ... 90.5 mm (3.56 in)
测试力 ... 4235 ± 254 N (952 ± 57 lb)
测试后的自由长度 ... 116.5 mm (4.59 in)
外径 ... 46.02 mm (1.812 in)

(12) 10 只锥形锁紧双头螺栓的扭矩 ... 110 ± 20 N·m (81 ± 15 lb ft)

注: 均匀地拧紧螺母 (13) 。 继续拧紧下一螺母前,将每个螺母拧紧一圈,直到板 (8) 接触制动器定位器 (5) 。 采用五角星方式交叉拧紧螺母至特定扭矩。

(13) 10 个螺母的扭矩 ... 270 ± 40 N·m (199 ± 30 lb ft)

(14) 18 只锥形锁紧双头螺栓的扭矩 ... 110 ± 20 N·m (81 ± 15 lb ft)

注: 均匀地拧紧螺母 (15) 。 继续拧紧下一螺母前,将每个螺母拧紧一圈,直到所有弹簧都被压下。 采用五角星方式交叉拧紧螺母至特定扭矩。

(15) 18 个螺母的扭矩 ... 300 ± 40 N·m (221 ± 30 lb ft)




图 3g01955066

剖面 B-B

(16) 组装沉孔中的矩形密封,以防停车制动器机油进入制动冷却储油室内。




图 4g01955064

剖面 C-C

(17) 9D-9121 弹簧

在测试力下的长度 ... 74.9 mm (2.95 in)
测试力 ... 890 ± 27 N (200 ± 6 lb)
测试后的自由长度 ... 91.14 mm (3.588 in)
外径 ... 26.59 mm (1.047 in)

(18) 9D-6093 弹簧

在测试力下的长度 ... 90.5 mm (3.56 in)
测试力 ... 4235 ± 254 N (952 ± 57 lb)
测试后的自由长度 ... 116.5 mm (4.59 in)
外径 ... 46.02 mm (1.812 in)

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