For forged chains the predominant means of pin retention is with soft iron circlip. Special attention must be given to installation since badly installed circlips will likely fail in service and in considering the pin construction cause the chain to part.
To install slide circlip over the pin end and seat within the circlip groove. Squeeze tightly as fig. 19.5.1. Do not over tighten since clip ears should not touch and a gap of approximately 0.050” (1.50mm) will remain.
To remove the circlip the tool should be positioned as fig. 19.5.2 “squeeze, pull and twist”. Clip will release.
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