| 摘要 |
A tool or fixture for use in replacing a chain, and a method of chain replacement using the tool or fixture, comprising a shroud member adapted to be detachably mounted outwardly of and in closely spaced chain guiding relation to an accessible portion of the normal path of movement of the chain so as to provide an outer bounding and retaining surface for said accessible portion of the chain path. An access opening is provided in the shroud member to permit connection of the new or replacement chain in series with the chain being removed, and to permit inward feeding movement through the access opening of the new chain and discharging movement through the access opening of the old chain. A further feature of the construction is the provision of means such as pivotally mounted angularly adjustable rollers supported by the shroud contiguous the access opening for applying an adjusted degree of tension to both the old and new chains during the chain replacement procedure. The tool and method of the invention, although not restricted to such use, have particular utility in connection with the replacement of a timing chain on an overhead cam engine.
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