Remove the camshaft retaining bolt and remove the sprockets and chain as an assembly.
拆去凸轮轴固定螺栓，并拆去作为一个总成的链轮和链条。
If chain is not satisfactory, remove camshaft sprocket attaching bolt and remove timing chain with crankshaft and camshaft sprockets.
若正时链不令人满意，则拆下凸轮轴链轮固定螺栓，并拆下曲轴和凸轮轴链轮的正时链。
It shows from in situ experiment and theoretical analysis that the bolt connecting chain is an effective, economical and practical supporting unit.
经现场试验和理论分析表明，锚杆联系链的支护效果很好，是一种经济、实用的新型支护材料。
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