MAN 8L28/32H Crankshaft Repair of a Power Plant in Sudan

About MAN 8L28/32H Crankshaft Repair of a Power Plant in Sudan

The crankshaft of a MAN 8L28/32H engine installed at a power plant in Sudan was reported damaged, requiring immediate technical attention to avoid prolonged downtime. With over 46 years of global experience in crankshaft repair and insitu crankshaft grinding, RA Power Solutions was entrusted with executing this critical job.

MAN 8L28/32H Engine Crankshaft MAN 8L28/32H Engine Crankshaft

Based on the initial damage report shared by the client, our engineering team developed a precise in situ crankshaft repair strategy. Customized tooling was manufactured in advance, and two highly skilled technicians were deputed to the site along with an onsite crankshaft grinding machine, enabling repairs to be carried out directly at the power plant in Sudan.

Damaged Crankpin of MAN 8L28/32H Engine Crankshaft	MAN 8L28/32H Crankpin Showing Surface Damage

Crankpin Grinding Details MAN 8L28/32H Engine

S. No.	Crankpin Details
1	Engine Make	MAN
2	Engine Model	8L28/32H
3	Crankpin Diameter Standard	230.00 MM
4	Crankpin Bearing Width	95.00MM
5	Grinding of Crankpin Number	#01,#05,#07
6	Polishing of Crankpin Number	#08
7	Place of Execution of Grinding of Crankpin	Power Plant , Sudan
8	Name of the Engaged Company RA Power	Reputed Company from Germany
9	Date Of Execution	07.06.2026 to 23.06.2026

MAN 8L28/32H Crankshaft Observation and Assessment

Prior to grinding, all crankpins were thoroughly inspected and measured to evaluate wear, taper, and ovality. The measurements confirmed deviations from the standard diameter of 230.00 mm, with ovality values exceeding permissible limitsclearly indicating the necessity for precision grinding and polishing.

Pre-Repair Measurements:

1. CR-1: Minimum diameter 229.81 mm, ovality 0.19 mm
2. CR-5: Minimum diameter 229.90 mm, ovality 0.10 mm
3. CR-7: Minimum diameter 229.93 mm, ovality 0.07 mm

MPI Testing of MAN 8L28/32H Diesel Engine Crankshaft	MAN 8L28/32H Crankpin During Grinding Process

Repair Process Executed on MAN 8L28/32H Crankshaft | Power Plant | Sudan

The following repair procedures were executed onsite with strict adherence to OEM tolerances:

1. Precision grinding of damaged crankpins #01, #05, and #07 to the recommended undersize
2. Polishing of crankpin No. #08 to achieve the specified surface finish
3. Continuous dimensional monitoring during machining to ensure accuracy and consistency
4. Final inspection to confirm surface integrity and bearing compatibility

Final Dimensions After Repair | MAN 8L28/32H Crankshaft

After completion of grinding and polishing, the crankpins achieved excellent dimensional accuracy and surface finish.

• Final Diameter Range: 229.48 mm to 229.50 mm
• Achieved Ovality: Within 0.02 mm (well within acceptable limits)

This ensured proper bearing fitment, uniform load distribution, and long-term operational reliability of the engine.

Crankpin Size Measurements After Repair MAN 8L28/32H Engine

SIZE OF CR PINS AFTER REPAIR
	A	Aa	C	Cc	B	Bb	Min	Maxi	Ovality
CR-1	229.50	229.49	229.50	229.49	229.49	229.48	229.48	229.50	0.02 mm
CR-2
CR-3
CR-4
CR-5	229.49	229.49	229.48	229.48	229.50	229.49	229.48	229.50	0.02 mm
CR-6
CR-7	229.50	229.49	229.48	229.50	229.49	229.48	229.48	229.50	0.02 mm
CR-8									Polishing

The crankshaft was successfully repaired onsite and handed over for reassembly. The engine was recommissioned without dismantling or transporting the crankshaft offsite, resulting in significant savings in time and cost for the client, while restoring full operational reliability.

Crankpin Surface After In-Situ Grinding and Repair	Repaired MAN 8L28/32H Crankpin after polishing

RA Power Solutions specializes in onsite crankshaft grinding, repair, and refurbishment for marine engines and power plant engines worldwide. Our proven expertise with MAN engines, advanced portable equipment, and highly experienced technicians allows us to deliver reliable and efficient solutions even under challenging site conditions.

For more information on onsite crankshaft repair, grinding of crankshaft, and crankshaft polishing please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Comprehensive In-Situ Machining

Our service portfolio covers all major aspects of crankshaft repair, including journal grinding and straightening. By employing portable equipment, we restore crankpins and main journals to exacting standards, eliminating costly and time-consuming crankshaft removal. This approach ensures rapid turnaround and maintains the integrity of surrounding engine components.


Precision & Rigorous Inspection

We guarantee consistency and safety through rigorous precision. Each repair includes non-destructive testing (NDT), hardness checks, and comprehensive crack detection to identify issues before they affect engine operation. Adhering to 0.02 mm tolerances ensures your MAN 8L28/32H crankshaft continues to meet the manufacturer's performance standards.


Expert Technicians, Reliable Results

Our team consists of highly qualified field technicians, each with more than 15 years of hands-on experience repairing MAN engines. Their expertise in portable on-site repair means swift diagnosis, professional machining, and robust long-term performance for your power plant's critical assets.