D7G2 Track-Type Tractor Power Train Caterpillar


Front Idlers and Recoil Springs

Usage:

D7G 7MB



图 1g00496252



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图 3g01261355

(1) 缓冲弹簧安装完毕后,将螺母向回拧 1.5 ± 0.8 mm (0.06 ± 0.03 in)。

(2) 3P-1885 弹簧

安装后的长度 ... 635 mm (25 in)
安装后的弹簧作用力 ... 171150 ± 12450 N (38470 ± 2795 lb)
自由长度 ... 802.9 ± 11.2 mm (31.61 ± 0.44 in)
外径 ... 241.3 ± 6.35 mm (9.5 ± 0.25 in)

(3) 加注阀和安全阀的扭矩 ... 35 ± 7 N·m (25 ± 5 lb ft)

(4) 28 只螺栓用的扭矩 ... 270 ± 35 N·m (200 ± 25 lb ft)

(5) 如有需要,在机架的每侧都采用垫片。 尺寸 (A) ,在支架和导向板间测量 ... 0.8 ± 0.5 mm (0.03 ± 0.02 in)

(6) 轴的端隙 ... 0.3 mm 至 0.7 mm (0.011 in 至 0.028 in)

(7) 轴和轴承之间的间隙 ... 0.36 mm 至 0.46 mm (0.014 in 至 0.018 in)

(8) 在每侧都采用垫片以使引导轮轴与支重轮轴平行。 采用垫片以保持板和轭之间的间隙。 ... 0.8 mm 至 1.9 mm (0.030 in 至 0.075 in)

(9) 锁销螺栓的扭矩

螺栓的扭矩 ... 55 ± 7 N·m (40 ± 5 lb ft)
用锤子敲打锁销螺栓。 再次拧紧螺栓。 ... 70 ± 14 N·m (50 ± 10 lb ft)

(10) 组装前将 4C-5599 防咬合剂 涂覆到轴承和锁的表面上。

(11) 润滑螺塞的扭矩 ... 170 ± 20 N·m (125 ± 15 lb ft)

(12) 组装时,橡胶曲面密封圈必须清洁干燥,所有与密封圈接触的表面也必须清洁干燥。 组装前,在金属密封圈的接触表面上涂覆一薄层油膜。 密封圈必须正好装在孔中。 橡胶曲面密封圈不得变形或扭曲。 组装时在所有其它密封圈上涂覆润滑油。

(13) 轴径 ... 69.82 ± 0.03 mm (2.749 ± 0.001 in)

(14) 组装前用 SAE 10W 机油润滑履带销套的表面。

(15) 用密封的润滑油润滑密封件。

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