Verification and assessment of technical condition


A power unit Mercedes OM906LA from the crane Liebherr LTM 1030/2 arrived at our company. The technical verification of the engine revealed numerous wear and damage, which necessitated a major overhaul.
Initially, a thorough inspection of the engine block was conducted – despite previous sleeving, concerning signs of water presence under the cylinder sleeves were noted. Further analysis detected cracks in the block, resulting in its replacement with a new one.


Processing and replacement of key components


Crankshaft and camshaft
The crankshaft underwent detailed measurements – both the crankpins and main journals required grinding. Due to significant wear on the lobes, the camshaft was replaced.

Connecting rod-piston assembly
As part of the overhaul, a new set of connecting rods was used, as well as new main, connecting rod, and thrust bearings. Piston rings, pistons, pins, and a set of pushrod cups were also replaced.

Engine head
The head was fully regenerated – machining, valve replacement, and valve guide replacement were performed. A leak test confirmed its proper condition for further operation.

Regeneration of accessories and fuel system


The overhaul also included regeneration of the turbocharger, alternator, starter, and compressor. Due to the overhaul of the unit, regeneration of the fuel system was also performed – new injectors, lift pump, and a set of single fuel pumps were used.
The oil pump, serpentine belt, thermostat, breather membrane, set of injector seals, and an operational set: fuel filter, oil filter, cap, and fuel sedimenter cover were also replaced.

Engine dynamometer test


After the completion of the overhaul work, the engine underwent a test on a stationary dynamometer. The test results confirmed the proper operation of the unit:
 


The engine started without issues, without fluctuations, without blow-by, and without smoking – even under load.

Preparation for assembly


The overhaul was a complete success. The engine is ready for reassembly in the vehicle and operation in field conditions typical for the crane Liebherr LTM 1030/2.

 

Trust the professionals – choose our company!

If your engine requires a comprehensive overhaul or you are looking for reliable spare parts for construction machinery, we invite you to take advantage of our services. We have many years of experience in regenerating power units and a rich assortment of original and replacement parts, allowing us to ensure reliability and the highest quality of workmanship.

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