Marine Engine Repair | Overhaul & Maintenance | Crankshaft Replacement by RA Power Solutions

RA Power Solutions have been providing Marine Engine Repair, overhaul & maintenance, Crankshaft replacement services for last four decades. The objective of company is to provide international standard of maintenance & repair services for diesel engines & diesel generator sets installed on a vessel or in Power Plants.

We have a huge client base & one can be assured that your all requirements related to Diesel Engine maintenance & repair will be in safe hands. The major reason as why we stand out as a unique company is that we possess the latest tools, equipment, measuring instruments which are calibrated periodically as per the class requirement & International standards.

Overhaul & maintenance of MAN B&W engine
Overhaul & maintenance of MAN B&W engine

We are giving below detail description of General overhaul & maintenance of MAN B&W engine undertaken recently in Indonesia.

Description:

I) Dismount, Inspection and overhaul of the cylinder cover including the fuel and air starting valves. The cylinder covers cooling spaces were also inspected, cleaned and fitted back with new O-rings.

II) Dismount and overhaul exhaust valve, renew sealing rings, grind valve spindle and valve seat

III) Pulling of the piston for inspection, cleaning, calibration, and overhaul. Checked for cracks on piston crow by die penetration test. The piston was assembled with new piston rings, O-rings.

IV) Dismount and overhauled stuffing box.

V) The cylinder liner was cleaned, calibrated and honed in order to restore the liners running surfaces and remove ovality. This ensured that the piston rings perform better and this will lead to a better overall cylinder condition, compared to if honing had not been done.

Inspection of Connecting Rods
Inspection of Connecting Rods
Inspection of Bearings while Overhauling of Engine
Inspection of Bearings while Overhauling of Engine

 

 

 

 

 

VI) The cylinder liner cooling spaces were inspected, cleaned and fitted back with new o- rings and water connectors

VII) The crosshead bearing was dismount, journal polished and both upper and lower bearing shells renewed.

VIII) The connecting rod bearing was dismount, crankpin polished and both upper and lower bearing shells renewed.

Reconditioning of Cylinder Heads
Reconditioning of Cylinder Heads

IX) The main bearing caps were removed, journal polished and both upper and lower bearing shells renewed.

X) Measurements of the cross head, connecting rod and main bearing clearances were taken.

XI) Crankshaft alignment measurement was taken with dial gauge (autolog method)

For your requirement of repair, maintenance and overhaul of Diesel engine you may contact us & will find our services as per the International standards & price wise lowest in the market.

The author is Mr. Raj Shahani Managing Director of RA Power Solutions having experience of almost four decades of working on high capacity diesel engines,  crankshaft, turbines, and rotary equipment.

RA Power Solutions have been providing Marine Engine Repair, overhaul & maintenance, Crankshaft replacement services for last four decades. The objective of company is to provide international standard of maintenance & repair services for diesel engines & diesel generator sets installed on a vessel or in Power Plants. We have a huge client base & … Continue reading “Marine Engine Repair | Overhaul & Maintenance | Crankshaft Replacement by RA Power Solutions”

Diesel Engine Overhaul | Diesel Engine Repair | Crankshaft Main Bearing Replacement – RA Power Solutions

RA Power Solutions was informed regarding the failure of three nos Crank pin Bearings of MAN B&W 5L60MC main engine onboard a vessel near South Africa.

RA Power experienced team of technicians boarded the vessel in a short time of 18 hours of receipt of intimation regarding the problem faced by the vessel. Following jobs were executed for overhaul and replacement of crankpin bearings in order to operate the engine satisfactorily after Engine repair and Engine overhaul.

MAN B&W 5L60MC Engine Repair & Overhauling is in Process
MAN B&W 5L60MC Engine Repair & Overhauling is in Process
DESCRIPTION:

I) Inspection and overhaul of the cylinder covers including the fuel and starting valves located in the covers.

II) The cylinder covers cooling spaces were also inspected, cleaned and fitted back with new O-rings.

III) Dismounting, Inspect and overhaul of the exhaust valves, renewed the seats and grinding the valve spindles.

IV) The cylinder liners were cleaned, calibrated and honed in order to restore the liners running surfaces and remove ovality. This ensured that the piston rings perform better and this will lead to a better overall cylinder condition, compared to if honing had not been done. The cylinder liners cooling spaces were also inspected, cleaned and fitted back with new o-rings.

Inspection of Engine Spares is in Process
Inspection of Engine Spares is in Process
Inspection and Repair of Crankshaft
Inspection and Repair of Crankshaft
V) The Crank pin  bearing caps were dismounted, both top and bottom bearing shells renewed

VI) The Crankshaft Crankpin  diameter was checked for the following parameters:

a) Visual inspection to check the presence of any Bearing Line marks or rough surface.

b) All the Crankpins were calibrated for taper & ovality.

c) Hardness was checked and observed within limits.

d) MPI was done to check the presence of any crack.

e) Crankshaft all pins were polished by onsite Crankshaft Grinding Machine removing the bearing line marks and for improving the Crank pin surface finish.

Onsite Repair of Crankpin by Crankshaft Grinding Machine
Onsite Repair of Crankpin by Crankshaft Grinding Machine
VII) Adjustment of the variable injection timing (VIT)

VIII) The bearing clearances were taken using lead wire

IX) Crankshaft alignment measurement was taken with a dial gauge.

Conclusion: After replacement of Bearings & Jobs described above undertaken at the time of Engine overhaul & Bearing replacement the engine was tested on the load & performance was observed satisfactory.

Repair of Crankpin is in Process
Repair of Crankpin is in Process
Inspection of Connecting Rod on Moving Vessel
Inspection of Connecting Rod on Moving Vessel

RA Power Solutions was informed regarding the failure of three nos Crank pin Bearings of MAN B&W 5L60MC main engine onboard a vessel near South Africa. RA Power experienced team of technicians boarded the vessel in a short time of 18 hours of receipt of intimation regarding the problem faced by the vessel. Following jobs … Continue reading “Diesel Engine Overhaul | Diesel Engine Repair | Crankshaft Main Bearing Replacement – RA Power Solutions”