Overhauling Of Main Engines On Mv Swaraj Dweep , Main Engines ( Port &Stbd ) Type-6L 35 Mc Mk6 , Man B & W Alpha Diesel . , Routines / Overhauling Are To Be Carried Out On Both Main Engines As Per Scope Of Work . Satisfactory Trials To Be Offered To Ship Staff , Mmd Surveyor & Hsl Post Completion Of Routines . Defects If Any Observed By Ship Staff To Be Liquidated And Trials To Be Reoffered . And Finally , Satisfactory Trials To Be Shown To Ship Staff , Class & Hsl . All Measuring Instruments , Consumables And Weldind/Brazing/Grinding Works Are Covered In Contractors Scope . , Crank Shaft Deflection Of Both Pme & Sme To Be Taken Before Entering Dry-Dock And After Completion Of Me Repairs . Report To Be Submitted To Ship Staff And Surveyors . , Port Main Engine: Type-6L 35 Mc Mk6 , Man B & W Alpha Diesel ( All Mentioned Jobs To Be Shown To Class And Mmd Surveyors ) , Works On Units #3 , #4 And #5 Cylinder Heads: A ) Cylinder Heads To Dismount From Place After Removing All Connections And Necessary Items And Unscrewing Hydraulically Tightened Cylinder Head Holding Down Nuts . B ) Cylinder Heads Cooling Water Spaces To Chemically Clean And Remove Scales . C ) Cylinder Heads Bottom Water Guide Jackets To Renew Together With O-Rings . ( Ships Supply ) ; After Completion Of Repairs , All Cylinder Heads , All Degut Connections To Be Fit Back In Position . , Remove Units #3 , #4 And #5 Nos Pistons From Place . Units #3 , #4 And #5 Pistons To Dismantle And New Piston Crowns To Fix . After Assembly Of Pistons With New Crowns , Pistons To Pressure Test With Smc 5030 Lubricating Oil ( Ships Supply ) To A Pressure Of 5Bar . All Three Units Stuffing Boxes To Dismantle Overhaul And Worn Out Parts To Renew . ( Ships Supply ) . Scope Of Work Includes The Following: Pistons Are To Be Dismantled , Cleaned . Old Rings Are To Be Removed , Cleaned & Gauged . Piston Rings Groves , Piston Crown Profile Are To Be Cleaned . Pistons Groove Widths , Rings Butt Clearances And Ring Axial And Radial Widths Including Existing Old Ones And New Ones To Take And All Records To Submit . All Piston Rings To Renew . ( Ships Supply ) . Pistons Are To Be Reassembled With New Sealing Rings & Parts . All Parts Are To Be Boxed Back With New Spare Parts As Necessary . Piston Is To Be Pressure Tested . Piston Is To Be Fitted With New Piston Rings . , Liners To Clean And Calibrate . The Liners Whose Wear Has Increased Or Reached To . 08% Of Original Liner Diameter Should Be Removed From Place And New Liners To Fix After Thorough Cleaning Of The Jackets . The Liners Whose Wear Is Within Limits And Outer O-Ring Holding Grooves Are Damaged , To Be Reconditioned . All Three Units Top Liner Cooling Water Jackets To Renew Along With O-Rings . ( Ships Supply ) ; If Found Any Above Liners Beyond The Economical Repairs , Respective Liners To Be Replaced With Ship Supplied Liners . , The Following Bearings Of Port Main Engine To Open Up For Survey And Same To Box Back After Survey Post Removal And Cleaning Of The Lub Oil From The Crank Case Sump . All Clearances To Check And Note Before Opening And After Completion Of Job . , #3 & #4 Units Con Rod Top End Bearing . Guide Clearances Also To Take . , #3 , #4 , #5 Crank Pin Bearings , #3 , #4 , #5 , #8 Main Journal & Bearing & Thrust Bearing , Stbd Inner Main Engine Lube Oil Pump To Dismantle , Overhaul And Offer For Survey . Type Imo Screw Pump Acf 125Lf Irb , Capacity 100 Cubm /Hr . After Survey , Pump To Be Boxed Back And Satisfactory Trial To Be Shown . , Port Outer Cam Shaft Lube Oil Pump To Dismantle , Overhaul And Offer For Survey . Type Imo Screw Pump Acf 125Lf , Capacity 10 . 3 Cubm / Hr . After Survey , Pump To Be Boxed Back And Satisfactory Trial To Be Shown .
