Overview
The ZF 4657.109.418 PARKING BRAKE is a critical safety and holding component designed specifically for the WG190 and WG210 series transmissions. This OEM genuine part engages a mechanical lock on the output shaft, ensuring the vehicle remains stationary when parked, even on steep inclines. As an integral part of the rear transmission assembly, the parking brake works in conjunction with the HOUSING REAR PART and the HOUSING REAR SECTION to provide a secure seal and structural integrity. The SKU 4657.109.418 is a direct replacement that meets ZF’s original manufacturing tolerances, eliminating the risk of driveline creep.
Symptoms of Failure
- Vehicle roll-away on inclines: If the parking brake fails to hold the transmission output shaft, the vehicle may roll unexpectedly when parked on a slope.
- Grinding or clicking noises during engagement: Worn internal components cause a harsh, metallic sound when the parking brake is applied or released.
- Intermittent parking brake release: The lever or actuator may feel loose, or the brake may disengage spontaneously while the vehicle is stationary.
- Oil seepage near the rear housing: A failing parking brake assembly can compromise the seal between the HOUS.FRONT SECT and the output shaft, leading to transmission fluid leaks.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number (SKU) | 4657.109.418 |
| OEM Reference | ZF 4657.109.418 |
| Material | Hardened steel with corrosion-resistant coating |
| Weight | 2.4 kg (5.3 lbs) |
| Overall Diameter | 185 mm |
| Mounting Bolt Pattern | 6 x M10 bolts on 150 mm PCD |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This parking brake is engineered for the ZF WG series of powershift transmissions. It is a direct fit for the WG190 and WG210 models. Additionally, it is mechanically compatible with the WG180, WG200, and WG211 series when used with the correct TRANSMISSION HOUSING. Always verify the spline count and housing depth against your specific transmission serial number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101078 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657201168 | HOUSING REAR PART | Rear housing section for output support |
| 4657298101 | HOUSING REAR SECTION | Extended rear housing for parking brake |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100801 | CAP SCREW | M10 bolt for housing fastening |
| 4656301148 | FIXING PLATE | Retainer plate for parking brake mechanism |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh filter for suction line |
| 0636100803 | CAP SCREW | M12 bolt for heavy-duty mounting |
Frequently Asked Questions
Q: Can I install the 4657.109.418 parking brake without removing the transmission from the vehicle?
A: In most applications, yes. The parking brake is accessible after removing the rear driveshaft and the rear housing cover. However, for WG210 models with a PTO, you may need to drop the transmission crossmember slightly to access the HOUSING REAR PART bolts.
Q: What is the typical service life of this OEM parking brake?
A: Under normal operating conditions, the ZF 4657.109.418 lasts 8,000 to 12,000 hours. Frequent use on steep grades or in dusty environments can reduce this lifespan. We recommend inspecting the brake pads and spring mechanism every 2,000 hours.
Q: Does this part include the mounting hardware?
A: The parking brake assembly (4657.109.418) includes the brake drum and internal shoes. Separate fasteners such as the CAP SCREW and FIXING PLATE must be ordered separately if they are not reusable from your old assembly.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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