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Recondition of engine Cummins 4BT3.9


We have rebuild in our workshop diesel engine Cummins 4BT3.9 that comes from a wheel excavator.

Due to the damage, we started the reconstruction of the engine with selecting the engine block, crankshaft, camshaft and connecting rod to the appropriate configuration of the customer. Afterthat We replaced following parts: main bearings, conrod's bearings and bushings, cylinder liners, pistons with rings. Remanufactured injectors and an injection pump as well as a new pre-pump were installed in the fuel system. The engine cooling system was equiped by new thermostats and reconditioned water pump.
The worn oil pump was replaced with a new one, and the damaged oil strainer was replaced with an operational one. Additionaly to oversizing of the engine block there was also replaced camshaft bearings in order to install a new shaft.
Moreover, the following parts were also reconditioned: crankshaft, connecting rods, head, and a turbocharger.
At last motor got a complete engine seals, filters set.
After engine assembly the unit was tested on our test bench for runing and proper work.


Agnieszka Kostka


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