3176C and 3196 Engines for Caterpillar Built Machines Caterpillar


Valve Mechanism

Usage:

140H 126



图 1g01416165

(1) 气门摇臂

(4) 气门桥

(7) 气门挺杆

(2) 气门间隙(发动机停机)

进气门 ... 0.38 ± 0.08 mm (0.015 ± 0.003 in)
排气门 ... 0.64 ± 0.08 mm (0.025 ± 0.003 in)

注: 设置气门间隙后,拧紧调整螺钉锁紧螺母。 重新检查气门间隙。

调整螺钉锁紧螺母的扭矩 ... 30 ± 7 N·m (22 ± 5 lb ft)

(3) 摇臂轴

新摇臂轴的直径 ... 34.000 ± 0.010 mm (1.3386 ± 0.0004 in)

(5) 将螺栓再次拧紧至以下扭矩。 ... 30 ± 3 N·m (22 ± 2 lb ft)

(6) 挺杆总成轴

新挺杆总成轴的直径 ... 20.000 ± 0.010 mm (0.7874 ± 0.0004 in)
气门挺杆体中的孔径 ... 20.050 ± 0.015 mm (0.7894 ± 0.0006 in)

Caterpillar Information System:

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