Overview
The ZF 2095.128.013 SERVICE BRAKE is a critical OEM genuine component designed to provide controlled deceleration and secure holding within ZF heavy-duty powershift transmissions. Positioned as a wet, multi-disc brake pack inside the transmission housing, this service brake directly engages the output shaft to manage torque during machine operation. The SKU 2095.128.013 is engineered to meet original factory tolerances, ensuring consistent clamping force and thermal stability under extreme loads. When paired with a properly functioning 2095109019: DIFFERENTIAL, this brake assembly maintains precise power distribution to the wheels.
Symptoms of Failure
- Gradual power loss during braking: Worn friction discs cause the machine to require increased pedal travel or higher hydraulic pressure to stop, often accompanied by a soft or spongy brake feel.
- Oil contamination and darkening: Internal seal degradation allows transmission fluid to bypass the brake piston, resulting in dark, burnt-smelling oil and visible metallic particles in the sump.
- Intermittent gear slipping under load: When the service brake fails to fully disengage, residual drag creates heat buildup, leading to erratic clutch engagement and momentary loss of drive on inclines.
- Audible grinding or chattering: Metal-on-metal contact from worn steel plates produces a distinct grinding noise during low-speed maneuvering, indicating imminent catastrophic failure.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2095.128.013 |
| Type | Wet Multi-Disc Service Brake |
| Outer Diameter | 280 mm (estimated) |
| Inner Diameter | 165 mm (estimated) |
| Thickness (packed) | 45 mm (estimated) |
| Weight | 4.2 kg (estimated) |
| Material | Sintered Bronze Friction Lining / Steel Core |
| OEM Reference | ZF 2095.128.013 |
| Operating Pressure | 12-18 bar |
Compatibility
This service brake is primarily designed for ZF WG180, WG200, and WG211 series powershift transmissions commonly found in wheel loaders, telehandlers, and graders. It also fits select variants of the ZF 4WG-200 and 6WG-200 torque converter transmissions. For optimal performance, always replace the brake pack alongside the 0750117075: TAPER ROLLER BEARING and the 2095209037: DIFFERENTIAL to maintain axial alignment. The 2095309059: DIFF.HOUSING must also be inspected for wear during service brake replacement to prevent premature failure.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2095109019 | DIFFERENTIAL | Distributes torque between axles |
| 0750117075 | TAPER ROLLER BEARING | Supports rotating shaft loads |
| 2095209037 | DIFFERENTIAL | Secondary torque distribution unit |
| 2095309059 | DIFF.HOUSING | Encloses differential gears |
| 0631329086 | SPRING PIN | Secures brake piston alignment |
| 0730300820 | THRUST WASHER | Reduces axial friction |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel ends |
| 2095309081 | DIFFERENTIAL AXLE | Carries differential side gears |
| 5838300811 | THRUST WASHER | Controls gear end-play |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Meshes with axle bevel gear |
