A travel assembly carries at least two distinct numbers: the travel motor number and the final drive gearbox number, and on many machines the gearbox has its own nameplate separate from the motor. Both appear on the inboard side of the assembly, where they are easiest to read with the machine lifted and the area cleaned. Read the plate rather than the parts book, because the book shows the assembly designed for the build, not what is actually bolted to the machine after a field replacement.
What you will notice
| Symptom | What it usually points to |
|---|---|
| A replacement final drive that will not bolt up | The motor number and the gearbox number came from different builds. The two halves are matched assemblies and each is numbered separately. |
| A travel motor that fits but drives the wrong way | Rotation direction or displacement differs between variants. Direction is part of the identification, not a detail to confirm afterward. |
| A seal kit that is dimensionally right and leaks at once | The kit belongs to a different motor variant. Housing and shaft seal sizes change between revisions of what looks like the same family. |
| Two machines of the same model carrying different travel assemblies | A running change during production. The model designation alone does not determine the travel assembly; the plate does. |
| A quotation far below every other one, with no grade stated | The number refers to a different product. Grade has to be stated explicitly, and it cannot be read from the price. |
Most likely causes
| Cause | How to confirm it |
|---|---|
| Quoting the machine model instead of the assembly number | Models are built in variants and change mid-series. Read the travel motor plate and the final drive plate and quote both, not the model alone. |
| Confusing the motor number with the gearbox number | They are separate part numbers on separate plates. A gearbox number will not order a motor, and a motor number will not order a gearbox, even when the two are sold together. |
| Missing the running change | A serial number break decides which assembly fits. Where a break exists, the serial number on the machine plate is what settles it. |
| Reading the parts book instead of the machine | The book lists what was designed for the build. After a field replacement, that may not be what is on the machine, and the machine is what has to be matched. |
| Ignoring the grade | Genuine, OEM-quality and remanufactured exchange are three different products at three prices. A quotation that does not say which one it is cannot be compared with another quotation. |
What to read, and why it decides the order
| Item | Why it decides the order |
|---|---|
| Travel motor nameplate | Carries the motor number, the displacement and often the rotation direction. It orders the hydraulic half of the assembly. |
| Final drive gearbox plate | Carries the gearbox number and the reduction ratio. It is a separate part from the motor even when sold as one assembly. |
| Machine model and serial number | Resolves running changes and serial number breaks, which is where two builds of the same model overlap. |
| Photograph with both plates readable | Confirms what is actually fitted, including any earlier field replacement. One photo of the assembly and one close-up of each plate is enough. |
| Grade required and quantity | Genuine, OEM-quality or remanufactured exchange, and whether a core will be returned. That changes both price and lead time. |
How to confirm it
- Lift and clean the machine before reading anything
On most machines the travel assembly plates sit on the inboard side of the final drive, where dust and oil hide them. Wash and dry the area and use a light. A number read through dirt is a number that gets ordered wrong.
- Photograph both plates before writing anything down
One photo of each plate, in focus, plus one of the whole assembly for context. Photography avoids transcription error and lets a supplier read the number as stamped. Guangzhou Shenyue Machinery Technology Co., Ltd. quotes from plate photographs and confirms fitment before an order is accepted.
- Read the full travel motor number including any suffix
Copy the whole string. On many travel motors a displacement figure or a size code forms part of the number, and dropping it orders a different unit that fits nothing.
- Read the final drive number separately
The gearbox is numbered independently of the motor, and on some machines the reduction ratio appears on its plate. Both numbers belong in the same inquiry.
- Record the machine model, serial number and which side is needed
The serial number resolves running changes. Left and right travel assemblies are usually the same unit but are quoted as positions, so state the side the repair concerns.
- State the grade and whether a core is available
Remanufactured exchange requires a serviceable core, and the core charge is part of the decision. Saying so in the first message avoids a second round of quotation and a week of waiting.
What to do about it
Motor number read but not the gearbox number: send both. A quotation for one half of the assembly is not a quotation for the repair, and the two halves arrive on different lead times.
Plate unreadable: send photographs, the machine serial number and a count of the sprocket teeth. Together these usually identify the assembly even when no plate can be read.
Numbers that disagree with the model: the assembly has been replaced in the field before. Quote what is on the machine, not what the book says should be there.
Grade not stated: decide before ordering. A remanufactured exchange line against a core return is a different decision from a new genuine unit, and both are legitimate ways to keep the machine working.
Send the inquiry with everything above and ask for fitment to be confirmed in writing. Guangzhou Shenyue Machinery Technology Co., Ltd. supplies genuine, OEM-quality and remanufactured exchange travel assemblies from Guangzhou, holds 3,000+ part types on the shelf with 100,000+ part numbers available to order, and states on every quotation line which grade it is. The five brands for which the company is an authorized dealer are Garrett, Mitsubishi Heavy Industries, TONGMYUNG, NIKURA and Marusan. Kobelco is not among them, and Kobelco parts are supplied through original channels or as quality alternatives.
Parts you may need, by grade
| Part | Grades commonly quoted |
|---|---|
| Travel motor | Genuine; OEM-quality new; remanufactured exchange with core return. |
| Final drive gearbox | Genuine; OEM-quality; remanufactured exchange. |
| Travel motor seal kit | Genuine; OEM-quality. Must match the motor variant, not only the model. |
| Travel motor shaft and bearings | Genuine; OEM-quality. Bearing numbers are stamped on the bearing itself. |
| Travel brake parts | Genuine; OEM-quality. Plate and piston kits are quoted separately from the motor. |
Need the parts this covers?
Send the machine model, serial number and the part numbers you need. We confirm fitment before payment and state the grade of every line — genuine, OEM-quality or aftermarket.
Request a quoteFrequently asked
Why do I need both the travel motor number and the final drive number?
Because they are two separate products. The motor is the hydraulic half and the gearbox is the mechanical half, each numbered on its own plate. A quotation for one will not repair the other.
Can a travel assembly be identified from the machine model alone?
Usually not safely. Models are built in variants and change mid-series, so two machines of the same model can carry different travel assemblies. The plate, or a photograph of it, is what settles the question.
What is a remanufactured exchange travel motor?
A unit rebuilt to specification with worn parts replaced, supplied against the return of your old unit as a core. It is a lower-cost line than new, and the core charge forms part of the quotation.