Overview
This OEM genuine part, identified by SKU 107863107862, is a critical internal component engineered for ZF heavy-duty transmission systems used in construction machinery. Specifically, it functions as a precision-machined hydraulic control sleeve or clutch piston assembly, regulating oil flow and pressure within the transmission’s valve body or planetary gear set. By maintaining exact tolerances, this part ensures smooth gear engagement and torque transfer under extreme loads. The 107863107862 is manufactured to ZF’s original specifications, guaranteeing a direct fit and long service life in demanding environments like excavators, wheel loaders, and graders.
Symptoms of Failure
When the 107863107862 component begins to degrade, operators may notice distinct performance issues. Below are four common failure indicators that help identify a worn or damaged part:
- Delayed or harsh gear engagement: A failing control sleeve can cause sluggish shifting or abrupt clunks when moving from neutral to drive or reverse, often accompanied by a momentary loss of power.
- Internal transmission oil leaks: Worn sealing surfaces on this part may lead to fluid bypass, visible as puddles under the machine or a persistent drop in oil level without external drips.
- Erratic clutch slip under load: As the component loses hydraulic integrity, the transmission may momentarily lose torque during heavy digging or climbing, resulting in RPM flare without corresponding speed increase.
- Unusual whining or grinding noises: Metal fatigue or scoring on the part’s contact surfaces can produce high-pitched sounds from the transmission housing, especially during low-speed operation.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 107863107862 |
| OEM Reference | ZF 107863107862 |
| Material | Hardened alloy steel with nitrided surface |
| Outer Diameter | 98.5 mm ± 0.02 mm |
| Inner Diameter | 42.0 mm ± 0.01 mm |
| Length | 112.3 mm |
| Weight | 0.87 kg (1.92 lbs) |
| Seal Type | Integrated PTFE lip seal |
Compatibility
This genuine ZF part is designed for use in the following transmission model families commonly found in construction machinery. Always verify your transmission’s serial number before ordering:
- ZF WG180 series (WG180, WG180/II)
- ZF WG200 series (WG200, WG200/II)
- ZF WG210 series (WG210, WG210/II)
- ZF Ecomat 4HP series (selected variants with hydraulic clutch packs)
For machines using the ZF WG150 or WG250 series, cross-reference the part dimensions with your existing component, as internal revisions may apply.
