STAY BOLTS HOLD THE ENGINE TOGETHER AND KEEP THEM IN COMPRESSION. A LOOSE/CRACK STAY BOLT WILL LEAD TO SERIOUS VIBRATION IN THE ENGINE.
BUT IN CASE THE STAY BOLTS GET CRACKED AND WE HAVE TO RUN THE ENGINE THEN FOLLOWING STEPS ARE TAKEN TO RUN THE ENGINE SAFELY :-
- IF THE ENGINE END STAY BOLTS I.E THE ONE LOCATED AHEAD OF 1ST CYLINDER OR THE ONE LOCATED AFT OF LAST CYLINDER) IS CRACKED, THE CYLINDER PRESSURE IS REDUCED TO 75% OF PMAX.
- IF THE STAY BOLTS IN BETWEEN 1ST AND LAST GETS CRACK, THEN REDUCE THE PRESSURE AT BOTH OF THE ADJACENT CYLINDERS TO 80% PMAX.
CRACKED STAY BOLTS SHOULD BE RENEWED AT FIRST OPPORTUNITY. IN CASE OF 1ST AND LAST STAY BOLTS BOTH THE STAY BOLTS (EXHAUST AND MANEUVERING SIDE) ARE CHANGED.
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