349F and 352F Excavators Machine System Specifications Caterpillar


Counterweight Cylinder

Usage:

352F-VG A9J



图 1g01795434

(A) 缸盖组件孔 ... 120.65 ± 0.08 mm (4.750 ± 0.003 in)

(B) 连杆的外径 ... 76.150 ± 0.038 mm (2.9980 ± 0.0020 in)

(C) 四棱头孔 ... 76.53 ± 0.03 mm (3.013 ± 0.001 in)

(1) 123-3790 套筒轴承

数量 ... 2
内径 ... 70.23 ± 0.02 mm (2.765 ± 0.001 in)
外径 ... 85.160 ± 0.013 mm (3.3528 ± 0.0005 in)
套筒轴承的安装深度 ... 5.0 ± 0.5 mm (0.20 ± 0.02 in)

注: 在锁紧螺母 (2) 的螺纹上涂敷润滑剂。

(2) 锁紧螺母扭矩 ... 6500 ± 650 N·m (4800 ± 480 lb ft)

注: 在缸盖 (3) 的螺纹上涂敷润滑剂。

(3) 缸盖的扭矩 ... 600 ± 130 N·m (440 ± 95 lb ft)

(4) 利用所密封的润滑剂轻轻润滑缓冲器密封组件的密封唇。

(5) 在要密封的 U 形杯密封唇上稍涂润滑剂。

(6) 利用所密封的润滑剂轻轻润滑刮油密封件的密封唇。

(7) 将 4C-4032 轴承安装固定胶 涂在刮油密封槽上,然后再组装。

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