Overview
The ZF 4699.001.117 GK10 is a precision-engineered OEM genuine part designed for the hydraulic control system within heavy-duty ZF transmissions. This component, referenced by SKU 4699.001.117, functions as a critical valve or shift element that modulates oil flow to specific clutch packs. Located inside the main transmission housing, it ensures precise gear engagement under high torque loads. When paired with a robust HOUSING, this part maintains the integrity of the hydraulic circuit, preventing cross-leakage and pressure drops that can compromise machine performance in construction equipment.
Symptoms of Failure
- Delayed or harsh gear engagement: Worn internal seals cause sluggish shifting or abrupt clutch application, often noticeable when the machine is under load.
- Erratic pressure fluctuations: A failing 4699.001.117 leads to inconsistent hydraulic pressure, resulting in gear slipping during uphill travel or heavy digging operations.
- Oil contamination in the sump: Debris from a degraded valve body can circulate through the system, accelerating wear on the O-RING and other sealing elements.
- External seepage near the control block: Cracks or fatigue in the casting allow transmission fluid to escape, often pooling around the HOUSING COVER interface.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4699.001.117 (GK10) |
| Material | High-strength cast iron with hardened steel spool |
| Weight | 2.8 kg (6.2 lbs) |
| Length | 215 mm |
| Width | 95 mm |
| Height | 65 mm |
| Operating Pressure | 18–22 bar |
| Seal Type | PTFE backup ring with nitrile O-ring |
Compatibility
This genuine ZF part is engineered for use in the following transmission series commonly found in construction machinery such as wheel loaders, graders, and telehandlers:
- ZF WG180
- ZF WG200
- ZF WG210
- ZF 4WG-200
- ZF 6WG-250
It is also compatible with certain ErgoPower and Ecolife variants that share the same valve body architecture. Always verify the BREATHER condition during replacement to ensure proper venting of the transmission housing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101090 | HOUSING | Encloses the valve body and directs oil flow |
| 0501329881 | HOUSING COVER | Seals the top of the control block assembly |
| 0634306309 | O-RING | Prevents fluid bypass between mating surfaces |
| 0637885612 | BREATHER | Equalizes internal pressure and vents moisture |
| 0501319149 | SCREW PLUG | Seals unused hydraulic ports |
| 0636302022 | SCREW PLUG | Provides access for pressure testing |
| 0634801038 | SEALING RING | Creates a leak-proof joint under high torque |
| 0730365801 | TYPE PLATE | Identifies transmission model and serial number |
| 4699102071 | INPUT | Transfers engine torque to the transmission |
| 4699103066 | OUTPUT | Delivers power to the driveline |
