Overview
The ZF 0501.003.913 BRAKE is a critical internal component designed specifically for the WG 200 series transmission. This OEM genuine part functions as a friction-based braking mechanism, engaging to hold the output shaft stationary during park lock or to assist in controlled deceleration under load. Positioned within the rear section of the transmission housing, it interfaces directly with the planetary gear set to prevent unintended rotation. The SKU 0501.003.913 is the exact replacement for the original factory-installed brake, ensuring precise fitment and hydraulic pressure response. When paired with a robust TRANSMISSION HOUSING (4644101212) or the alternative TRANSMISSION HOUSING (4644301221), this brake maintains the structural integrity required for heavy-duty industrial applications.
Symptoms of Failure
- Transmission creep in park: If the brake fails to hold, the vehicle may roll on inclines even when the selector is in “Park.” This is a common long-tail search query for “ZF WG200 park brake failure.”
- Delayed engagement or gear slipping: Worn friction material causes a soft or delayed shift when engaging drive or reverse, often reported as “ZF transmission slipping under load.”
- Overheating and burnt fluid odor: Partial brake drag generates excessive heat, leading to dark, burnt-smelling transmission fluid—a classic sign of “ZF brake disc wear symptoms.”
- Unusual grinding or whining noise: Metal-on-metal contact from worn brake linings produces a distinct grinding sound, especially during low-speed maneuvers.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 0501.003.913 |
| Material | Sintered bronze friction lining on steel core |
| Outer Diameter | 180 mm (approx.) |
| Inner Diameter | 120 mm (approx.) |
| Thickness | 4.5 mm (new) |
| Weight | 0.85 kg |
| OEM Reference | ZF 0501.003.913 |
| Operating Pressure | 12–15 bar |
Compatibility
This brake is engineered for the WG 200 series transmission family, including models such as the WG180, WG200, and WG210. It is also compatible with select variants of the ZF 4WG-200 and 5WG-200 series used in construction and agricultural machinery. For proper assembly, ensure the TYPE PLATE (0730365067) is correctly affixed to the housing for model identification, and use a GROOVED STUD (0631311009) to secure the brake pack during installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101212 | TRANSMISSION HOUSING | Encloses and supports the brake assembly |
| 4644301221 | TRANSMISSION HOUSING | Alternate housing for WG200 series |
| 0730365067 | TYPE PLATE | Identifies transmission model and specs |
| 0631311009 | GROOVED STUD | Secures brake pack alignment |
| 4644303060 | COVER PLATE | Seals the brake access port |
| 4644303061 | COVER PLATE | Alternate cover plate for different housing |
| 4644221031 | SCREEN TUBE | Filters debris from brake hydraulic circuit |
| 0634306531 | O-RING | Seals brake piston bore |
| 0634306525 | O-RING | Secondary seal for brake housing |
| 0636305026 | SCREW PLUG | Closes hydraulic test port |
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