Skip to main content

M/E overhauling procedure- Cylinder head

Engage turning gear,starting air shut off. Isolate-(Exhaust valve spring air, fuel, cooling water). Remove-(cooling water connection,spring air connection,hydraulic actuator connection, fuel oil connection, starting air connection, exhaust valve bellow). clean cylinder head stud threads. hydraulic jack operation-  lower the tensioning jack in the thread after the distance piece. connect the snap
connectors to the jack.tighten the jack full and slack back half a turn. pressurize the jack to required pressure slowly and slacken the nut using a tommybar. then depressurize and remove the jack and remove stud completely. attach the lifting bolt and remove the cylinder head. remove all valves and clean and lap their bores using lapping tools. take measurements of seat using templates.
Labels:

Comments

Post a Comment

Popular posts from this blog

Why atomisation test should not be done in slide type fuel valves

Since very small needle lift is obtained in the test equipment result in an unequal pressure distribution in the cut off shaft resulting in a hard contact in a small area along with high frequency oscillations, low lubricity of test oil will increase the chance of seizure. Full lift and high lubricity of heavy oil eliminates this risk  of seizure during normal operation.( Always open and clean slide type valves before testing as cold sticky heavy oil along with small clearances can cause restriction in the movement of the spindle).
Post a Comment
Read more