Overview
The ZF 2099.228.001 BRAKE HOUSING is a critical structural component within the final drive assembly of heavy-duty construction machinery transmissions. This OEM genuine part encloses the brake disc pack and provides the necessary hydraulic sealing and mechanical support for reliable braking torque transmission. Positioned between the axle housing and the wheel hub, the SKU 2099.228.001 ensures that braking forces are properly contained and dissipated during high-load operations. When paired with the 2098309010: DIFFERENTIAL HOUSING, it forms a sealed unit that protects internal gears from contamination while maintaining consistent brake actuation.
Symptoms of Failure
- Hydraulic oil leaks around the wheel end: A cracked or warped brake housing allows transmission fluid to escape, often visible as drips near the hub seal area. This is a common long-tail search query for “ZF brake housing oil leak repair.”
- Reduced braking force or spongy pedal feel: When the housing distorts, it cannot properly align the brake pistons, leading to uneven pad wear and a loss of stopping power—often searched as “ZF transmission brake fade symptoms.”
- Metallic grinding noises during braking: Debris ingress through a damaged housing causes scoring on the brake discs and the 2099364014: CROWN WHEEL, producing audible grinding that worsens under load.
- Overheating at the wheel hub: A compromised housing restricts proper cooling oil flow, causing localized heat buildup that can damage adjacent 2099109002: DIFFERENTIAL components.
Technical Specifications
| Part Number | 2099.228.001 |
| Material | High-tensile cast iron (GGG-40 equivalent) |
| Overall Diameter | 320 mm (12.6 in) |
| Mounting Bolt Pattern | 12 x M14 bolts on 280 mm PCD |
| Weight | 8.7 kg (19.2 lbs) |
| OEM Reference | ZF 2099.228.001 (genuine) |
| Seal Surface Hardness | HRC 45-50 |
| Max Operating Pressure | 25 bar (362 psi) |
Compatibility
This brake housing is designed for ZF WG-series powershift transmissions commonly used in wheel loaders, graders, and dump trucks. It directly fits the following models: WG180, WG200, WG210, and WG250. The housing also integrates with the 2099209001: DIFFERENTIAL assembly in these transmissions. For earlier WG160 variants, verify the bolt pattern matches before installation. The part is not compatible with ZF Ecomat or AS Tronic series.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2099109002 | DIFFERENTIAL | Distributes torque to wheel ends |
| 2099364014 | CROWN WHEEL | Transfers final drive rotation |
| 2099209001 | DIFFERENTIAL | Spider gear assembly for load sharing |
| 2098309010 | DIFFERENTIAL HOUSING | Encloses differential gears |
| 2098309009 | DIFFERENTIAL HOUSING | Alternate housing variant |
| 2098309031 | AXLE BEVEL GEAR | Input bevel gear for final drive |
| 2098309030 | AXLE BEVEL GEAR | Output bevel gear set |
| 2098309032 | DIFFERENTIAL BEVEL GEAR | Planetary bevel gear |
| 12883200682 | THRUST WASHER | Axial load bearing surface |
| 0635332059 | BALL BEARING | Supports rotating shaft |
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