Overview
The ZF 4699.801.234 GK10 is a precision-engineered gear set assembly designed for heavy-duty construction machinery transmissions. This OEM genuine part sits within the planetary gear train of ZF power shift transmissions, where it manages torque distribution and speed reduction during high-load operations. The SKU 4699.801.234 is a direct replacement component that ensures optimal power flow from the input shaft to the output shaft. When installed alongside the 4699001217 GK10, this assembly maintains the structural integrity required for excavators, wheel loaders, and graders operating under extreme stress.
Symptoms of Failure
When the ZF 4699.801.234 wears out, operators may notice distinct performance issues. Grinding noises during gear engagement often indicate damaged gear teeth or bearing surfaces within the GK10 assembly. Intermittent gear slipping under load occurs when the gear set loses its precise meshing tolerance, causing power loss during digging or pushing operations. Metallic debris in transmission fluid is a clear sign of internal wear, typically found during routine oil changes. Delayed or harsh shifting between forward and reverse gears suggests the gear set is no longer maintaining proper alignment with the 4699101125 HOUSING.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4699.801.234 |
| Type | GK10 Gear Set Assembly |
| Material | Case-hardened alloy steel (20MnCr5) |
| Weight | 4.8 kg (10.6 lbs) |
| Outer Diameter | 185 mm |
| Tooth Count | 34 helical teeth |
| OEM Reference | ZF 4699.801.234 |
| Heat Treatment | Carburized & tempered to HRC 58-62 |
Compatibility
This GK10 gear set is engineered for ZF WG series transmissions commonly found in construction machinery. It directly fits the WG180, WG200, and WG250 models used in Caterpillar, Komatsu, and Volvo equipment. The 4699.801.234 also integrates with the 4699102074 INPUT shaft assembly and the 4699103016 OUTPUT flange. For proper sealing, always pair this gear set with a new 0634306309 O-RING and 0630513065 SNAP RING during installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699001217 | GK10 | Matching gear set for torque distribution |
| 4699101125 | HOUSING | Encloses and supports the gear assembly |
| 4699102074 | INPUT | Transfers power from engine to gear set |
| 4699103016 | OUTPUT | Delivers torque to final drive |
| 0501329881 | HOUSING COVER | Seals the transmission housing |
| 0630513065 | SNAP RING | Secures bearings and gears on shafts |
| 0634306309 | O-RING | Prevents fluid leaks at mating surfaces |
| 0637885612 | BREATHER | Equalizes pressure inside transmission |
| 0501331653 | SCREW PLUG | Seals oil drain or fill ports |
| 0636302013 | SCREW PLUG | Additional port sealing for sensors |
