Place of Origin:
China
Brand Name:
Hitachi
Model Number:
2837539
A machine of this size is bought by the number on the casting, not by the badge on the boom, and this particular casting has been released under at least seven figures across two charger families. Sellers also attach a phrase about strengthening, which no catalogue defines, so two quotations that look identical on the outside can carry different wheels inside. The plate on the old unit is the only document that settles it.
| Product Name | Turbocharger Assembly |
|---|---|
| Charger Frame | HX83, also catalogued as HE800FG |
| Quoted Number | 2837539 |
| Companion Figures | 2881769, 319733, 318959, 4033032, 5327838 |
| Further Figures | 4955653, 4046243, 4046244 |
| Engine | QSK23, twenty three litre class six cylinder, fitted as QSK23C in this machine |
| Machine | EX1200-6 and the EX1200-6LD designation, mining front shovel duty |
| Second Family | TD13M builds appear against the earlier dash five machine on the same engine |
| Duty | Continuous mining load, high ambient dust |
| Packing | Crated on a pallet, both ports capped, actuator and pipework bracketed |
| Seven Figures One Casting | The block of figures around this unit is the widest in the whole mining range, and a buyer quoting one of them will be told by three sellers that the other six do not exist. |
|---|---|
| Two Families On One Engine | A second charger maker supplied the same engine in its earlier machine form, and the two frames are quoted side by side in the trade without any note about which machine each belongs to. |
| What The Upgrade Wording Means | The phrase used in the enquiry is a trader expression and has no definition in any catalogue, so it usually signals a different wheel or bearing package inside the same housing rather than a different figure. |
| Loading Shovel Duty | A machine working face loading spends its life at high load and low road speed, which raises exhaust temperature compared with a digging only cycle on the same engine. |
| Machine Side Or Charger Side | The plate on the machine and the plate on the charger belong to two separate numbering systems and neither index points at the other. |
| Caution - Dust Before Boost | On this duty the air cleaner and the inlet piping fail long before the bearing does, and a boost complaint on a shovel is an induction fault until proven otherwise. |
| Caution - Heat Soak | Shutdown after a full bucket cycle leaves oil cooking in the centre housing, and a cool down routine is worth more than any internal upgrade. |
| Caution - Reused Feed Pipe | The feed line on these engines cokes internally, and a new unit fed through an old pipe will fail inside a shift. |
| Caution - Wrong Wheel Symptom | A mismatched wheel does not seize, it produces a machine that feels flat and runs hot, which is often blamed on the fuel system for weeks. |
| Related Components | Cartridge, compressor wheel, turbine housing, gasket set, feed pipe, drain pipe, air cleaner element, flange studs |
Only where the plate names the same figure, since a second family was used there.
Often not, which is exactly why the internal specification must be written down.
A photograph of the plate and of the compressor cover.
Because the same figure is offered new, rebuilt and as a bare cartridge.
Yes, on any engine past its first overhaul.
Several minutes at idle after a loaded cycle.
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