Overview
The ZF 4699.001.082 GK10 is a genuine OEM component engineered for the demanding environment of construction machinery transmissions. This part functions as a critical sealing and alignment element within the valve body or clutch housing assembly, ensuring precise hydraulic pressure distribution during gear shifts. The SKU 4699.001.082 is specifically designed to maintain the structural integrity of the transmission’s control unit, preventing cross-contamination between oil circuits. When installed alongside the 4699101080: HOUSING, it creates a sealed chamber that directs fluid flow to the correct clutch packs. This component is often replaced during a full transmission overhaul to restore factory-spec performance in wheel loaders, excavators, and heavy-duty trucks.
Symptoms of Failure
- Erratic gear engagement or delayed shifting: When the 4699.001.082 wears, internal leakage causes pressure drops, leading to “hunting” between gears or a noticeable lag when shifting from neutral to drive.
- Hydraulic oil contamination: A degraded seal surface allows metallic debris from the clutch packs to circulate, often visible as dark, gritty fluid on the dipstick.
- External oil seepage at the housing joint: Cracks or deformation in this part produce slow leaks around the 0501329881: HOUSING COVER, leaving oil residue on the transmission bell housing.
- Intermittent transmission overheating: Insufficient sealing forces the torque converter to work harder, generating excess heat that triggers warning lights on the dashboard.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4699.001.082 (GK10) |
| Material | High-grade aluminum alloy with nitrile rubber seal |
| Weight | 0.85 kg (1.87 lbs) |
| Outer Diameter | 120 mm |
| Inner Diameter | 85 mm |
| Operating Temperature Range | -40°C to +120°C |
| Sealing Surface Hardness | HRC 45-50 |
| Related Sealing Components | 0634306309: O-RING, 0630513065: SNAP RING |
Compatibility
This genuine ZF part is primarily used in the WG180 and WG200 series transmissions, which power many Volvo, Liebherr, and Caterpillar construction machines. It also fits select Ecomat 4HP and 6HP models used in mobile cranes and graders. The 4699.001.082 is a direct replacement for earlier revision GK08 and GK09 variants. Always verify your transmission’s serial number against the 0730365801: TYPE PLATE to ensure correct fitment. For complete assembly, pair this part with the 4699102083: INPUT shaft and the 0637885612: BREATHER for optimal pressure equalization.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101080 | HOUSING | Encloses the valve body and directs oil flow |
| 0501329881 | HOUSING COVER | Seals the top of the housing assembly |
| 0630513065 | SNAP RING | Retains internal components axially |
| 0634306309 | O-RING | Provides static seal between mating surfaces |
| 0637885612 | BREATHER | Equalizes internal pressure and vents moisture |
| 0501319149 | SCREW PLUG | Closes unused hydraulic ports |
| 0636302022 | SCREW PLUG | Seals drain or test points |
| 0634801038 | SEALING RING | Prevents leaks at threaded connections |
| 0730365801 | TYPE PLATE | Identifies transmission model and revision |
| 4699102083 | INPUT | Transfers torque from engine to transmission |
