Overview
The ZF 0501.209.006 BRAKE CAM is a critical actuation component engineered specifically for the WG 150 series transmission. This OEM genuine part functions as the mechanical interface that converts linear pneumatic force into precise rotational motion to engage the parking brake mechanism within the transmission housing. Positioned on the output shaft assembly, the brake cam directly controls the spring-applied, hydraulically-released brake pack. The SKU 0501.209.006 is manufactured to ZF’s exacting tolerances, ensuring consistent clamping force and reliable static holding capacity. For complete assembly integrity, this brake cam is installed in conjunction with the 4642101109 TRANSMISSION HOUSING and the 4642301205 TRANSMISSION HOUSING, which provide the structural foundation for the brake system.
Symptoms of Failure
When the ZF 0501.209.006 brake cam wears beyond service limits, operators will notice distinct performance degradation. Transmission creep on inclines is the most common symptom, where the vehicle rolls forward or backward despite the parking brake being engaged. Delayed brake engagement occurs when the cam lobe surface has worn, requiring excessive travel before the brake pads contact the drum. Intermittent brake release during normal operation can result from a seized or corroded cam shaft, causing unexpected drag and overheating. Unusual metallic clicking noises from the transmission bell housing indicate the cam follower has lost contact with the cam profile, a condition that accelerates damage to the 0631311009 GROOVED STUD and surrounding linkage.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0501.209.006 |
| OEM Reference | ZF 0501.209.006 |
| Material | Case-hardened alloy steel (16MnCr5) |
| Surface Treatment | Manganese phosphate + oil impregnation |
| Overall Length | 142.5 mm |
| Cam Lobe Diameter | 38.0 mm |
| Shaft Diameter | 20.0 mm |
| Weight | 0.85 kg |
| Hardness | 58-62 HRC (case depth 0.8 mm) |
| Torque Capacity | 450 Nm |
Compatibility
This brake cam is primarily designed for the ZF WG 150 series transmission family. Based on the mechanical architecture, it is also compatible with the following ZF models that share the same brake actuation geometry: WG 151, WG 152, WG 160, WG 180, and WG 200. The part is not interchangeable with the WG 120 series or the Ecolife generation without modification to the shift system. For proper identification, always verify the 0730365125 TYPE PLATE on your transmission to confirm the exact model variant before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Main structural casing for brake cam mounting |
| 4642301205 | TRANSMISSION HOUSING | Secondary housing for output shaft support |
| 0730365125 | TYPE PLATE | Identification plate for model verification |
| 0631311009 | GROOVED STUD | Locating pin for cam follower alignment |
| 4642301168 | SCREEN SHEET | Oil filtration mesh for brake circuit |
| 4642301169 | SCREEN SHEET | Fine filtration element for hydraulic fluid |
| 0636100621 | HEXAGON SCREW | Fastener for brake cam cover plate |
| 4642301186 | SCREEN SHEET | Debris screen for breather port |
| 4644106300 | SHIFT SYSTEM | Pneumatic actuator assembly for brake cam |
| 4644306500 | COVER PLATE | Sealing plate for brake cam access port |
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