Overview
The ZF 2095.128.001 SERVICE BRAKE is a critical hydraulic-mechanical component designed to halt output rotation within ZF heavy-duty drivelines. Positioned directly on the differential carrier housing, this OEM genuine part applies clamping force to a rotating disc pack, converting kinetic energy into heat to stop the machine. The SKU 2095.128.001 is engineered specifically for construction machinery operating under extreme torque loads, ensuring positive engagement even in muddy or dusty environments. This service brake works in concert with the 2095109009: DIFFERENTIAL to manage power distribution, and its precise fitment prevents driveline backlash that can damage adjacent gears.
Symptoms of Failure
- Brake drag causing transmission overheating: When the 2095.128.001 piston seal fails, the brake remains partially engaged, generating excessive heat in the axle housing and degrading transmission fluid viscosity.
- Intermittent loss of holding power on slopes: Worn friction discs within this service brake allow the vehicle to creep forward or backward when parked on a grade, a dangerous condition often searched as “ZF parking brake not holding.”
- Metallic grinding noise during brake application: A seized 0750117075: TAPER ROLLER BEARING in the brake assembly produces a low-frequency growl that intensifies with pedal pressure, indicating imminent disc failure.
- Hydraulic fluid contamination with friction material: As the service brake wears, carbon particles enter the oil circuit, clogging valves and accelerating wear on the 2095209037: DIFFERENTIAL.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2095.128.001 |
| Type | Hydraulic service brake (multi-disc) |
| Outer Diameter | 210 mm |
| Inner Diameter | 145 mm |
| Thickness (stack height) | 48 mm |
| Weight | 3.2 kg |
| Material | Sintered bronze friction lining / steel core |
| OEM Reference | ZF 2095.128.001 |
| Max Operating Pressure | 18 bar |
| Temperature Range | -20°C to +120°C |
Compatibility
This service brake is a direct fit for ZF WG180, WG200, and WG210 series powershift transmissions commonly used in wheel loaders, graders, and dump trucks. It also integrates with the 2095309059: DIFF.HOUSING in ERGOPOWER drivelines. Always verify the spline count and piston bore diameter against your specific transmission serial number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2095109009 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports brake hub radial load |
| 2095209037 | DIFFERENTIAL | Rear axle torque splitting |
| 2095309059 | DIFF.HOUSING | Encloses differential gears |
| 0631329086 | SPRING PIN | Secures brake piston return spring |
| 0730300820 | THRUST WASHER | Controls axial clearance in brake pack |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel hub |
| 2095309081 | DIFFERENTIAL AXLE | Carries differential side gears |
| 5838300811 | THRUST WASHER | Reduces friction on brake disc splines |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Mesh with pinion for final drive |
