Chapter10Blockinspection

Chapter10Blockinspection - Block inspection Some visual...

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Block inspection Some visual checks Cylinder cracking Damaged fasteners Housing bores Copyright 2003 Gary Lewis – Dave Capitolo
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Block inspection Crack detection Bolt holes Main bearing webs Core plug holes Intake valley
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Block inspection Cylinder wear Maximum wear 90 across piston pin, at top of cyl Taper – difference between bottom and most worn Actual wear exceeds measured Taper limit - .008”
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Block inspection Piston clearance Don’t confuse taper with clearance Minimum cylinder diameter – max piston diameter
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Block inspection Checking pistons Ring groove wear = .003” to .006” or 2 times new
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Block inspection Checking pistons Worn or collapsed piston skirts Knurling – If clearance exceeds specs up to .002”
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Block inspection Checking pistons Collapsed piston – When piston loses cam shape Measure 45º across piston pin Leads to piston ‘slap’
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This note was uploaded on 01/06/2012 for the course AUTO 94 taught by Professor Davecapitolo during the Fall '03 term at DeAnza College.

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Chapter10Blockinspection - Block inspection Some visual...

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