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THE FUEL PUMP (MAN B&W) IS PROVIDED WITH A  MANUAL LIFTING DEVICE WHICH CAN LIFT THE ROLLER GUIDE ROLLER FREE OF THE FUEL CAM. THE LIFTING DEVICE IS MOUNTED ON THE SIDE OF THE ROLLER GUIDE HOUSING. THE LIFTING / LOCKING DEVICE CONSISTS OF A FLANGE, A NUT, A STOP SCREW AND A SHAFT WITH A GUIDE SCREW AND A PIVOT PLACED ECCENTRICALLY IN THE END OF THE SHAFT.

ENGAGING AND DISENGAGING THE LIFTING DEVICE MUST ONLY BE DONE WHEN THE ENGINE IS AT A COMPLETE STANDSTILL.

OPERATION:-

WHEN THE FUEL PUMP IS TO BE PUT OUT OF ACTION, TURN THE ENGINE UNTIL THE ROLLER GUIDE REACHES ITS TOP POSITION I.E WITH THE ROLLER GUIDE RESTING ON THE CIRCULAR PART OF THE CAM.

THEN MANUALLY PRESS THE SHAFT AGAINST THE ROLLER GUIDE, MANUALLY TURN THE SHAFT UPWARD AS MUCH AS THE GUIDE SCREW ALLOWS AND SECURE THE SHAFT IN THIS POSITION. THE ECCENTRIC END OF THE SHAFT CAUSES THE ROLLER GUIDE TO LIFT THE ROLLER COMPLETELY CLEAR OF THE CAM DISC.