Camshaft engine problem Brisbane - CRACKED / BROKEN
When a camshaft breaks it is generally the result of another component failure. In the case of pushrod engines contact with a broken con rod is the usual cause. This is only resultant damage and has no bearing on the condition of the camshaft. Some pushrod OHV engines such as Holden202 blue and 6 cylinder Ford Falcon engines have camshafts designed with cut outs in the camshaft to accommodate the conrod when it travels past. If the cam timing is lost during high revs (broken chain or gears) the conrods will contact the camshaft causing the cam to be broken. Other serious damage can occur at the same time causing the block to be unserviceable. OHC engines break camshafts usually after a seizure of a cam journal in the head. The camshaft breaks between the seized journal and the cam driven gear or cog. Most belt driven OHC engines strip the cam belt before breaking the camshaft. Chain driven OHC engines are more prone to break a cam under these circumstances as the chain drive is more robust. When this occurs all camshaft chains or belts must be replaced even if they appear to be ok. All timing chain components should be replaced as the force required to break a seized camshaft has exceeded what the timing components were designed to handle.(adjusters, rails, idler bearings, thrust plates, chains, gears and sprockets) Disclaimer Agreement : Every care has been taken in writing this information and procedures, but no responsibility can be excepted for errors, omissions or misuse of this information and procedures. The information available on this site is for your instruction only and cannot be copied for sale, © copyright 2001 UMR Engines
Broken camshaft due to
seized cam journal
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Camshaft engine problem Brisbane -
CRACKED / BROKEN
When a camshaft breaks it is generally the result of another component failure. In the case of pushrod engines contact with a broken con rod is the usual cause. This is only resultant damage and has no bearing on the condition of the camshaft. Some pushrod OHV engines such as Holden202 blue and 6 cylinder Ford Falcon engines have camshafts designed with cut outs in the camshaft to accommodate the conrod when it travels past. If the cam timing is lost during high revs (broken chain or gears) the conrods will contact the camshaft causing the cam to be broken. Other serious damage can occur at the same time causing the block to be unserviceable. OHC engines break camshafts usually after a seizure of a cam journal in the head. The camshaft breaks between the seized journal and the cam driven gear or cog. Most belt driven OHC engines strip the cam belt before breaking the camshaft. Chain driven OHC engines are more prone to break a cam under these circumstances as the chain drive is more robust. When this occurs all camshaft chains or belts must be replaced even if they appear to be ok. All timing chain components should be replaced as the force required to break a seized camshaft has exceeded what the timing components were designed to handle.(adjusters, rails, idler bearings, thrust plates, chains, gears and sprockets) Disclaimer Agreement : Every care has been taken in writing this information and procedures, but no responsibility can be excepted for errors, omissions or misuse of this information and procedures. The information available on this site is for your instruction only and cannot be copied for sale, © copyright 2001 UMR Engines
Broken camshaft due to
seized cam journal
7 Moss Street, Slacks Creek, Qld 4127
