Overview
The ZF 0501.211.169 BRAKE is a critical internal component engineered for the WG115, WG130, and WG158 transmission series. This OEM genuine part functions as a friction-based stopping mechanism within the planetary gearset assembly, ensuring precise torque hold and smooth declutching during gear shifts. The SKU 0501.211.169 is specifically designed to interface with the 4656101037: TRANSMISSION HOUSING and the 4656201075: HOUS.FRONT SECT, forming a sealed hydraulic circuit that applies clamping force. Without this brake, the transmission cannot maintain stationary loads or execute controlled downshifts in heavy-duty industrial applications.
Symptoms of Failure
- Delayed engagement or “brake slipping” – When the 0501.211.169 wears, you may experience a lag between shifting into gear and actual movement, often accompanied by a burning smell from overheated friction material.
- Erratic gear holding on inclines – A failing brake allows the output shaft to rotate unexpectedly when parked on a slope, indicating loss of static torque capacity.
- Hydraulic fluid contamination – Worn brake lining particles can circulate through the system, clogging the 4656301016: SCREEN SHEET and reducing overall pressure.
- Audible grinding or chattering – Metal-to-metal contact from completely depleted friction material produces a distinct noise during clutch-to-brake transitions.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0501.211.169 |
| Outer Diameter | 185 mm |
| Inner Diameter | 135 mm |
| Friction Plate Thickness | 2.8 mm |
| Material | Sintered bronze on steel core |
| Weight | 0.42 kg |
| OEM Reference | ZF 0501.211.169 |
| Torque Capacity | 450 Nm (estimated) |
Compatibility
This brake is directly compatible with ZF WG115, WG130, and WG158 transmissions. It also fits the WG160, WG200, and WG210 series when used with the correct 4656201035: HOUSING REAR PART or the 4472239178: HOUSING REAR PART. Always verify the spline count and stack height against your existing assembly. For WG180 models, confirm the brake piston clearance before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101037 | TRANSMISSION HOUSING | Encloses the gearset and brake assembly |
| 4656201075 | HOUS.FRONT SECT | Front section supporting input shaft |
| 4656201035 | HOUSING REAR PART | Rear housing for output bearing support |
| 4472239178 | HOUSING REAR PART | Alternate rear housing variant |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 4656301148 | FIXING PLATE | Secures brake piston return springs |
| 0636100817 | CAP SCREW | Fastener for housing mating surfaces |
| 4656301016 | SCREEN SHEET | Fine mesh filter for hydraulic fluid |
| 4656301017 | SCREEN SHEET | Alternate mesh filter variant |
| 0636100803 | CAP SCREW | Bolt for brake pack retention |
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