777D and 777E Off-Highway Truck Hydraulic System Caterpillar


Hoist Cylinder

Usage:

777D FKR



图 1g01346396

(1) 6 个螺栓的扭矩 ... 475 ± 50 N·m (350.3 ± 36.9 lb ft)

(2) 杆

杆外径(镀铬) ... 139.650 ± 0.038 mm (5.4980 ± 0.0015 in)

(3) 内筒

气缸内径 ... 190.50 + 0.13 mm − 0.05 mm (7.500 + 0.005 in − 0.002 in)
气缸外径(镀铬) ... 215.850 ± 0.038 mm (8.4980 ± 0.0015 in)
气缸底外径(两个位置) ... 240.00 ± 0.13 mm (9.449 ± 0.005 in)

(4) 外部气缸

气缸内径 ... 241.30 ± 0.10 mm (9.500 ± 0.004 in)

(5) 内部缸盖

内部缸盖的扭矩 ... 600 ± 130 N·m (443 ± 96 lb ft)
内部缸盖的内径 ... 140.20 ± .05 mm (5.520 ± 0.002 in)

注: 将内部缸盖 (5) 组装至内部气缸 (3) 前,必须涂抹下列两种密封胶。 将 7M-7456 复合剂 涂抹到气缸 (3) 末端上的内部螺纹上。 将 8T-0065 密封胶 涂抹到内部缸盖 (5) 的最后三个螺纹上。

(6) 外部缸盖

缸盖的内径 ... 215.98 ± 0.03 mm (8.503 ± 0.001 in)

(7) 用少量密封的润滑剂润滑密封唇。

(8) 活塞

A活塞外径(两个位置) ... 190.00 ± 0.03 mm (7.480 ± 0.001 in)

(9) 在拧紧外部缸盖上的 12 个螺栓前,杆 (2) 必须完全伸展。

Caterpillar Information System:

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