Overview
The ZF 4699.001.126 GK10 is a genuine OEM gear component engineered for heavy-duty construction machinery transmissions. This part functions as a critical intermediary within the planetary gear set, ensuring precise torque distribution and smooth power flow from the input shaft to the output assembly. Designed to withstand extreme loads and thermal stress, the SKU 4699.001.126 is manufactured to ZF’s exacting tolerances for long service intervals. It sits directly within the transmission housing, interfacing with the 4699101081 HOUSING and the 0501329881 HOUSING COVER to maintain structural integrity and lubrication containment.
Symptoms of Failure
When the ZF 4699.001.126 GK10 begins to degrade, operators may notice specific performance issues. Gear slipping under load is a primary indicator, often accompanied by a grinding noise during acceleration. Oil leaks around the transmission housing can occur if the component’s seating surface wears, allowing hydraulic fluid to escape past the 0634306309 O-RING. Delayed engagement or harsh shifting between forward and reverse gears signals internal wear, while metal particles in the transmission fluid confirm material fatigue. Addressing these symptoms early prevents cascading damage to the 0637885612 BREATHER and adjacent assemblies.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4699.001.126 (GK10) |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 1.85 kg (4.08 lbs) |
| Outer Diameter | 98.4 mm |
| Inner Diameter | 42.0 mm |
| Tooth Count | 34 (helical) |
| OEM Reference | ZF 4699.001.126 |
| Sealing Interface | Compatible with 0634306309 O-RING |
Compatibility
This genuine ZF part is primarily used in the following transmission models common to construction machinery: WG180, WG200, and WG210 series. It also fits select variants of the Ecomat 4HP and 6HP gearboxes used in wheel loaders and excavators. Always verify the housing configuration; the GK10 interfaces directly with the 4699101081 HOUSING and 0501329881 HOUSING COVER for correct alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101081 | HOUSING | Encloses gear set and supports shafts |
| 0501329881 | HOUSING COVER | Seals housing and retains bearings |
| 0634306309 | O-RING | Prevents fluid leakage at mating surfaces |
| 0637885612 | BREATHER | Equalizes internal pressure and vents moisture |
| 0501319149 | SCREW PLUG | Seals access ports in the housing |
| 0636302022 | SCREW PLUG | Secondary sealing for drain/fill points |
| 0634801038 | SEALING RING | Provides static seal under high pressure |
| 0730365801 | TYPE PLATE | Identification label for transmission model |
| 4699102064 | INPUT | Transfers engine torque to gear set |
| 4699103063 | OUTPUT | Delivers reduced speed to final drive |
