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Rocker arm failure

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ola0206

Marine/Ocean
Oct 23, 2003
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Can anyone help in explaining what could cause the rocker arm of a 17.5 KVA lister petter to break
 
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Would suggest you check valve springs for weakness or fracture, the security of the valve stem collet or retaining device i.e. circlip and check for heavy carbon build up causing the valve to jam. Finally, if none of the above, check the timing.
GL
Barriec
 
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