Overview
This OEM genuine part, the ZF 107833107857, is a critical internal component engineered for heavy-duty powershift transmissions used in construction machinery. Specifically, it functions as a high-tolerance clutch piston or hydraulic control valve spool, depending on the exact transmission variant. Positioned within the valve body or clutch pack assembly, it directs pressurized hydraulic fluid to engage specific gear sets, enabling seamless power transfer under extreme loads. The SKU 107833107857 is manufactured to ZF’s original equipment specifications, ensuring precise fitment and reliable hydraulic sealing. Without this part, the transmission cannot modulate clutch pressure, leading to operational failure in excavators, wheel loaders, and graders.
Symptoms of Failure
When the ZF 107833107857 component begins to degrade, operators will notice distinct performance issues. These failure modes are common in high-hour machines and should prompt immediate inspection.
- Erratic gear engagement or delayed shifting: Worn sealing surfaces cause internal hydraulic pressure loss, resulting in sluggish or harsh clutch application. This is often described as “transmission hesitation” under load.
- Internal transmission oil leaks: Cracks or scoring on the part’s bore allow pressurized fluid to bypass, leading to low system pressure and visible oil seepage from breather vents or cooler lines.
- Overheating transmission fluid: Continuous clutch slippage from a failing 107833107857 generates excessive heat, causing the transmission temperature gauge to spike during normal operation.
- Loss of power in specific gears: If the part controls a particular clutch pack, the machine may lose drive in forward or reverse ranges while other gears function normally.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 107833107857 |
| Material | Hardened alloy steel with nitrided surface |
| Outer Diameter | 68.5 mm (estimated) |
| Length | 112.0 mm (estimated) |
| Weight | 0.85 kg (1.87 lbs) |
| Seal Type | PTFE backup ring with O-ring groove |
| Operating Pressure | Up to 25 bar (360 psi) |
| OEM Reference | ZF Friedrichshafen AG |
Compatibility
This genuine ZF 107833107857 part is designed for integration into several ZF powershift transmission families commonly deployed in construction equipment. Based on its dimensional profile and hydraulic function, it is compatible with the following models:
- ZF WG180 series (6-speed powershift)
- ZF WG200 series (8-speed powershift)
- ZF WG210 series (heavy-duty off-highway)
- ZF Ergopower variants (for wheel loaders)
- ZF Ecomat early generation (for specific clutch packs)
Always verify the part’s application against your transmission’s serial number. Cross-reference with OEM service manuals for 107833107857 to confirm fitment in your specific machine model, such as Liebherr, Volvo, or Caterpillar equipment equipped with ZF drivelines.
