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Exhaust valve checking.

Lift the valve using e/r crane. Connect compressed air to the pneumatic piston, valve must close. Insert a 1mm feeler gauge between valve and seat, it should go inside for 15mm. Now after shutting
of the compressed air and release the vent plug screw and purge the air out. the valve should open. check the compressed air is holding the valve for at least 15 minutes. After overhauling check the wear with provided templates.
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