Overview
The ZF 4699.270.024 ASSEMBLY PARTS is a critical internal component engineered for heavy-duty construction machinery transmissions. This OEM genuine part, identified by SKU 4699.270.024, functions as a precision-machined assembly element within the valve body or clutch pack housing of ZF powershift transmissions. It ensures correct hydraulic fluid routing and mechanical alignment between the HOUSING and the HOUSING COVER. Without this assembly part, the transmission cannot maintain proper pressure regulation, leading to operational instability in loaders, graders, and dozers.
Symptoms of Failure
When the 4699.270.024 assembly part wears out, operators often notice these specific failure modes:
- Erratic gear engagement or delayed shifting – The part loses its dimensional tolerance, causing misalignment in the clutch piston circuit. This is a common search query for “ZF transmission slow to engage.”
- Internal hydraulic leaks – Degraded sealing surfaces allow oil to bypass the intended path. Look for “ZF 4699.270.024 oil leak symptoms” if you see fluid pooling near the bell housing.
- Abnormal noise during direction changes – A worn assembly part creates metallic chatter or whining when the transmission shifts from forward to reverse under load.
- Overheating transmission fluid – Restricted oil flow due to part deformation generates excess heat, often flagged in “construction machinery transmission hot” searches.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4699.270.024 |
| Material | Hardened alloy steel (C45E + nitrided) |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 95 mm x 42 mm x 28 mm |
| OEM Reference | ZF Friedrichshafen AG genuine |
| Surface Finish | Ground, 0.8 µm Ra |
| Operating Pressure | Up to 25 bar (362 psi) |
Compatibility
This assembly part is primarily designed for ZF WG series powershift transmissions used in construction machinery. It is a direct fit for the WG180 and WG200 models, which are common in Volvo, Liebherr, and Caterpillar wheel loaders. It also applies to the WG150 and WG210 variants where the valve body configuration matches. Always verify the O-RING condition and the BREATHER vent when replacing this part to prevent contamination.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101081 | HOUSING | Encloses the clutch pack and valve assembly |
| 0501329881 | HOUSING COVER | Seals the housing top and guides shift rods |
| 0634306309 | O-RING | Prevents fluid leaks at mating surfaces |
| 0637885612 | BREATHER | Equalizes internal pressure and vents moisture |
| 0501319149 | SCREW PLUG | Seals oil passages in the valve body |
| 0636302022 | SCREW PLUG | Provides access for pressure testing ports |
| 0634801038 | SEALING RING | Creates a static seal between housing sections |
| 0730365801 | TYPE PLATE | Identifies transmission model and serial number |
| 4699001182 | GK10 | Gasket kit for complete overhaul sealing |
| 4699102158 | INPUT | Input shaft assembly transferring engine torque |
