3612 and 3616 Engines Caterpillar


Valve Mechanism

Usage:

3616 1PD



图 1g01022145

(1) 锁紧螺母

扭矩 ... 200 ± 25 N·m (150 ± 18 lb ft)

(2) 摇臂轴

新摇臂轴的直径 ... 69.900 ± 0.015 mm (2.7520 ± 0.0006 in)
新摇臂轴的新轴承的孔径 ... 70.000 ± 0.015 mm (2.7559 ± 0.0006 in)
摇臂轴承的最大粗糙度平均值(Ra) ... 1.6 微米 (64 微英寸)

(3) 气门间隙

进气门 ... 0.60 ± 0.08 mm (0.024 ± 0.003 in)
排气门 ... 1.00 ± 0.08 mm (0.039 ± 0.003 in)

(4) 锁紧螺母

扭矩 ... 100 ± 15 N·m (75 ± 11 lb ft)

(5) 气门桥定位销

气门桥定位销的直径 ... 19.055 ± 0.003 mm (0.7502 ± 0.0001 in)
气门桥的孔径 ... 19.162 ± 0.030 mm (0.7544 ± 0.0012 in)
缸盖螺塞中用于定位销的孔径 ... 19.017 ± 0.020 mm (0.7487 ± 0.0008 in)

(6) 导向弹簧不能再次使用。 如果拆卸了导向弹簧,务必安装新的导向弹簧。

(7) 挺柱

新挺柱的直径 ... 41.910 ± 0.010 mm (1.6500 ± 0.0004 in)
导管中用于挺柱的孔 ... 42.000 ± 0.020 mm (1.6535 ± 0.0008 in)



图 2g00289969

A-A 视图

(8) 螺栓

扭矩 ... 430 ± 60 N·m (320 ± 44 lb ft)

(9) 螺栓

扭矩 ... 430 ± 60 N·m (320 ± 44 lb ft)
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