Overhaul of GE-HIMSEN 8H25/33 Engine
INJEGOV delivers OEM-standard GE-HIMSEN 8H25/33 overhaul services, combining advanced diagnostics, precision machining, and certified engineering processes. This project showcases a full-scope overhaul, focused on restoring engine performance, improving reliability, and extending the lifecycle of critical components.
INJEGOV successfully completed a full-scope overhaul and reconditioning project for a GE-HIMSEN 8H25/33 auxiliary engine, restoring operational reliability, extending component lifespan, and ensuring compliance with OEM standards.
Scope of Work
The overhaul included complete disassembly, inspection, machining, and reassembly of critical engine components:
Major Components Serviced
- Cylinder Covers (8 units)
- Connecting Rods (8 units)
- Cylinder Liners (8 units)
- Pistons (8 units)
- Fuel Valves (8 units)
Additional Systems Inspected
- Fuel Pumps (inspection)
- Charge Air Cooler (inspection & pressure testing)
All works were executed following strict OEM tolerances and Hyundai HiMSEN specifications
HIMSEN 8H25/33 Overhaul Works Performed
HIMSEN 8H25/33 Cylinder Covers
- Full cleaning and pressure testing
- Dye penetrant inspection on combustion areas
- Precision machining of exhaust valve seat pockets (+1.00 mm oversize)
- Surface restoration to eliminate corrosion wear
- Assembly with new components and final testing
- Anticorrosive protection and preservation
GE-HIMSEN 8H25/33 Connecting Rods
- Disassembly, cleaning and magnetic particle inspection
- Bearing housing surface polishing
- Dimensional verification and reassembly
- Replacement of small end bushes
GE-HIMSEN 8H25/33 Cylinder Liners
- Dimensional and surface roughness measurements
- Honing to HD standards
- Final inspection confirming compliance with OEM limits
- Anti-corrosion treatment and preservation
GE-HIMSEN 8H25/33 Pistons
- Full disassembly and inspection
- Replacement of sealing components (O-rings)
- Reassembly within manufacturer tolerances
GE-HIMSEN 8H25/33 Fuel Valves
- Complete overhaul with new spare parts
- Precision adjustment and calibration
- Pressure testing on certified test bench
Technical Evaluation & Engineering Results
Detailed inspection and measurements confirmed:
- All cylinder liners remained within allowable tolerances after honing
- All pistons and grooves were within OEM limits and suitable for reuse
- Connecting rods showed no defects after non-destructive testing
- Cylinder covers were successfully restored through precision machining
- Fuel valves fully calibrated and tested for optimal performance
