Place of Origin:
China
Brand Name:
Komatsu
Model Number:
49477-02530
This turbocharger assembly serves the four-cylinder 4D95 engine family fitted to Komatsu PC130 crawler excavators across the five, seven, eight and ten series. Each generation carries its own charger figure, and the engine code on the plate — not the machine badge — determines which build is on the frame. The latest ten-series machines add exhaust aftertreatment, which changes the calibration rather than the bolt pattern.
| Product Name | Turbocharger Assembly |
|---|---|
| Charger Frame | TD04L on the earlier builds, TD04M4T on the latest |
| Engine | Four-cylinder 4D95, turbocharged, code SAA4D95LE on the later machines |
| Later Build Number | 6271-81-8100, crossing to 49377-01700 |
| Latest Build Number | 49477-02530, with 49477-02600 beside it |
| Middle Build Number | 6208-81-8100, crossing to 49377-01610 and 49377-01611 |
| Early Build Number | 6205-81-8110, and 6732-81-8100 for the sixth series machine |
| Air System | Fitted with exhaust aftertreatment from the ten series onward |
| Machine Class | Thirteen-tonne crawler, general earthworks |
| Packing | Foam cradle, ports capped, actuator protected |
| The Ten Is Not A Refresh | The last generation brought a filter into the exhaust path and rewrote the boost strategy, so its charger is a different article from the one on the machine it replaced, even though the block and the manifold face carry over. |
|---|---|
| Four Numbers For Four Builds | The five, the seven, the eight and the ten each answer to their own figure, and the figures share no pattern a buyer can guess from the machine badge. |
| Two Charger Families | Older builds use a wastegated frame while the newest uses a different one with a nozzle ring, and the two are told apart by the shape of the actuator mount rather than by the casting number. |
| Six-Cylinder Neighbour | A visually similar unit belongs to the two-hundred class machine with two more cylinders, and the housings are close enough that photographs deceive. |
| Smaller Sibling On The Same Block | The seventy and eighty class machines run the same family at a smaller trim, so a part number shared in a listing may describe a lighter machine. |
| Related Components | Actuator, cartridge, nozzle ring, exhaust gasket, oil feed pipe, drain pipe, intake hose, mounting studs. |
A charger from the earlier build on the later machine runs clean for minutes and then pulls power, and the code that follows points at the filter rather than at the charger that was fitted.
The arm is set on a jig, and a unit straightened by hand to clear a hose will hold the nozzle open at idle and smoke.
The banjo at the block hides a screen that collects carbon, and skipping it turns a new cartridge into scrap inside a working day.
A split hose after the filter lets dust straight into the wheel, and the damage is mistaken for a balance fault on a new unit.
The newest pair in this group, because the last generation changed the charger along with its exhaust treatment. Older figures still bolt on and then run the wrong calibration.
Not reliably. The engine plate carries the code that decides the build, and that code is what a supplier should be given.
Because those sellers cover a range rather than one article.
Yes, a low-ash grade, and the wrong oil shortens the filter life.
A photograph of the plate and of the actuator mount.
Only where the housings are sound and the actuator is healthy.
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