How to Repair Hydraulic Gear Pump: Complete Step-by-Step Guide
Learn how to diagnose & repair hydraulic gear pumps fast. Step-by-step guide covers symptoms, root causes & re…
| Manufacturer / Brand | Olive Branch Hydraulics |
|---|---|
| Product type | Aftermarket single hydraulic gear pump |
| Primary part number | 4120001803 |
| Own catalog model | JHP2100A |
| Cross-search references | JHP2A100 / CBGjA2100; configuration verification required |
| Internal catalog SKU | OBH-LD-062 |
| Equipment reference | SDLG wheel loader |
| Application references | LG956 / LG953; match machine serial number and OEM parts list |
| Historical parts reference | LG953L post-2006 appears in a supplier parts table; not an exhaustive serial-number rule |
| Images | Own orange pump catalog composite plus two direct crops; no recreated geometry |
| Drive shaft | Splined; exact count, diameter and engagement length to be confirmed |
| Mounting flange | Confirm pilot diameter, hole pattern, dimensions and thickness |
| Inlet / Outlet | Confirm port sizes, bolt pattern, orientation and sealing arrangement |
| Rotation | Confirm as viewed from drive-shaft end |
| Displacement | Exact offered-unit value not confirmed |
| Pressure / Speed | Exact offered-unit datasheet and operating limits required |
| Distinct number | 4120000371 is publicly listed as CBGjA2050 for LG918 / L920; do not assume interchange |
| Origin | China |
| Order matching | Old-pump nameplate, machine serial number and shaft/flange/port photos |
Olive Branch Hydraulics manufactures the JHP2100A gear pump (SKU OBH-LD-062) in Hebei, China as an aftermarket replacement for SDLG part number 4120001803. Supplier references list it for LG956 and LG953 wheel loaders, and we confirm fitment against your machine serial number before quoting.
Public catalogs also list this pump under JHP2A100 and CBGjA2100. We treat those labels as cross-references only until the configuration is checked.
SDLG pump numbers are often confused in parts lists. Our catalog previously grouped 4120000371 with 4120001803. Public parts references identify them differently, so we keep the two numbers separate.
| Number / Label | Type | Status |
|---|---|---|
| 4120001803 | SDLG OE part number | Primary reference for this pump |
| JHP2100A | Olive Branch catalog model, SKU OBH-LD-062 | Our production model |
| JHP2A100 | Public cross-search label | Verify configuration before ordering |
| CBGjA2100 | Public cross-search label | Verify configuration before ordering |
| 4120000371 | SDLG OE part number | Not assumed interchangeable. Public catalogs list it as CBGjA2050 for LG918 / L920 |
Produced as our catalog model JHP2100A, SKU OBH-LD-062, for SDLG loader hydraulic replacement.
We compare the shaft, flange and ports of your old pump or sample against JHP2100A before quoting.
We verify JHP2A100 and CBGjA2100 listings against your configuration instead of assuming they match.
Gallery images are crops of our own orange pump photos and show the shaft, flange, body and port views.
We review marking and packaging requests from distributors and private-label buyers as part of the quotation.
Spline count, flange dimensions, rotation, displacement, pressure and speed are not published for this listing. Confirm them against your original pump.
| OE part number | 4120001803 |
|---|---|
| Catalog model | JHP2100A |
| SKU | OBH-LD-062 |
| Cross-search labels | JHP2A100 / CBGjA2100 (configuration to be verified) |
| Pump type | External gear pump |
| Application reference | SDLG LG956 / LG953 (confirm machine serial number) |
| Shaft spline | Tooth count to be confirmed from your sample |
| Mounting flange | Dimensions to be measured against original pump |
| Rotation / displacement | To be confirmed from nameplate or sample |
| Origin | Hebei, China |
Send the loader model and full serial number. The LG956 and LG953 references do not guarantee fit on every unit.
Photograph the nameplate and any part number cast into the pump body.
Count the spline teeth and measure the shaft diameter and length.
Measure the bolt spacing, pilot diameter, port sizes and thread type.
Record the rotation direction viewed from the shaft end.
If your parts list shows CBGjA2050 or LG918 / L920, this is not the correct pump.
Not sure your pump is 4120001803?Send a nameplate photo and the loader serial number. We check them against JHP2100A before quoting.
Gear pumps and aftermarket hydraulic components are our core line. Every quotation comes directly from the factory.
This catalog entry has model JHP2100A and internal SKU OBH-LD-062 for identifying repeat enquiries.
We separate confirmed numbers from search labels and flag known mismatches such as 4120000371.
Send your order quantity and expected volume for a quotation. Applicable pricing is confirmed for the requested configuration.
We confirm logo marking, carton printing and labels in writing in each OEM/ODM quotation.
Send your loader serial number, a nameplate photo, the order quantity and your destination market. You will receive a fitment check against JHP2100A and a quotation for your requested quantity.
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