Overview
The ZF 0501.004.252 BRAKE is a critical internal component engineered specifically for the WG 200 series transmission. This OEM genuine part functions as a friction-based stopping mechanism, engaging to hold planetary gear sets during torque conversion and shift events. Positioned within the clutch pack assembly, the 0501.004.252 ensures precise power interruption and smooth gear transitions under heavy load. When paired with a robust TRANSMISSION HOUSING, this brake delivers consistent performance in demanding industrial applications. The SKU 0501.004.252 is manufactured to ZF’s original tolerances, guaranteeing a direct fit and long service life.
Symptoms of Failure
- Delayed or harsh engagement: A worn 0501.004.252 brake causes noticeable lag when shifting from neutral to drive, often accompanied by a jarring clunk.
- Intermittent gear slipping under load: As friction material degrades, the transmission may momentarily lose torque transfer, especially during uphill climbs or heavy hauling.
- Burning odor from transmission fluid: Overheated brake surfaces generate a distinct burnt smell, indicating the part is no longer gripping effectively.
- Metallic debris in the oil pan: Advanced wear produces fine metal particles that contaminate the hydraulic fluid, often visible during routine maintenance.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0501.004.252 |
| Material | Sintered bronze friction lining with steel core |
| Outer Diameter | 180 mm (approx.) |
| Inner Diameter | 120 mm (approx.) |
| Thickness | 4.5 mm (new) |
| Weight | 0.85 kg |
| OEM Reference | ZF 0501.004.252 |
Compatibility
This brake is primarily designed for the ZF WG200 series, including the WG200, WG180, and WG150 models. It is also compatible with select WG120 variants that share the same clutch pack architecture. For proper installation, ensure the transmission housing is free of scoring; consider replacing the TRANSMISSION HOUSING if damage is present. Always verify the TYPE PLATE on your unit to confirm the exact series before ordering. The 0501.004.252 integrates directly with the COVER PLATE assembly, making it a straightforward replacement for qualified technicians.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101223 | TRANSMISSION HOUSING | Encloses and aligns all rotating assemblies |
| 4644301225 | TRANSMISSION HOUSING | Alternate housing variant for WG200 |
| 0730365125 | TYPE PLATE | Identifies transmission model and serial number |
| 4644301298 | COVER PLATE | Seals the clutch pack cavity |
| 0634306525 | O-RING | Prevents fluid leakage at housing joints |
| 0636305026 | SCREW PLUG | Seals hydraulic test ports |
| 4644301279 | SCREEN SHEET | Filters debris from hydraulic fluid |
| 4644301088 | SEALING CAP | Protects exposed shaft ends |
| 4644106300 | SHIFT SYSTEM | Controls hydraulic pressure to clutch packs |
| 4644306500 | COVER PLATE | Secondary cover for valve body access |
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