Recondition of Cummins engine QSL9-300

The Cummins QSL9-300 diesel engine, which is used in crawler excavator Hyundai HX330, was repaired in our workshop. We rebuilt the engine with following new repair kits containing liners, pistons, piston rings and pins with clips. Additionally, the main bearing shells, connecting rod bearing shells and bushings were installed from the scope of basic elements. Injectors and high-pressure pump were revisioned and checked on testing table. The engine cooling system got a new water pump and a new thermostat. We have also replaced the worn oil pump with a new one. Worn-out tappets required to be replaced, fortunately the camshaft was quite good condition required polishing only.
We have also regenerate following components: crankshaft, connecting rods, cylinder head and turbocharger.
The engine was assembled on a new set of seals, sealants and filters.
After the repair, the engine was checked and initially run-in on the engine dyno stand for proper running.

Kinga Wata