Reply to "Dropped a valve..."

George PAdmin.

You are correct Ron.

The rocker arm failed (the roller broke off) first, not the valve. This allowed the end of rocker to straddle the valve tip and push down on the spring retainer. Pushing down on the retainer allowed the keepers to loosen, fall out of the groove and fall off the valve stem. Once the keepers let go of the valve, the valve dropped. The piston hit the valve & broke the head off.

Look at the bottom of the rocker & the top of the spring retainer, it is evident they were in contact with each other.

The question is, why did the rocker arm break?

-G

5/23/115:20 PM

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