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Keyless Propeller Removal & Installation

By: Eng. Mahmoud Abd Elmgeed Mahmoud Mohamed
     Keyless  Propeller       Slacking steps: 1)       CHECK THE GAP BETWEEN THE ROPE GUARD & PROPELLER END THEN REMOVE               THE ROPE GUARD. 2)       POLISH ONLY TIPS AND ROOTS WITH PROPELLER BOSS FOR CRACK TEST. 3)       Put MAIN ENGINE PISTON No.1 ON TOP DEAD CENTER POSITION. 4)       MAESURE WEAR DOWN USING POKER GAUGE. 5)       BRROKE THE PROPELLR CAP CEMENT. 6)       DRAIN THE STERN TUBE OIL. 7)       DISCONNECT THE LINER FROM THE PROPELLER. 8)       MARK THE POSITION OF THE PROPELLER TO THE SHFT RADIAL AND AXIAL. 9)       DISCONNECT THE CAP. 10)    WELD TWO PADEYES 180deg. WITH THE STERN TUBE BOSS. 11)    SECURE THE PROPELLER TO THE STERN TUBE POST. 12) ...
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PBCF FITTING MANUAL

By: Eng. Mahmoud Abd Elmgeed Mahmoud Mohamed
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                                                              PBCF Appearance Assembling Ref. Positions Assembling position                                                                                                                                Measurements                                                              PBCF LIFTING         ...
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PBCF OR HVAF

By: Eng. Mahmoud Abd Elmgeed Mahmoud Mohamed
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  What is the PBCF? The propeller boss cap fin or hub vortex absorbed fin (HVAF) its a kind of energy saving device , it can save fuel consumption by 2% to 5% as operation at same speed if designed properly. PBCF   installed on the hub of a vessel’s propeller. It improves propeller efficiency by weakening the hub vortex generated behind the rotating propeller.
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