Overview
The ZF 4657.109.416 PARKING BRAKE is a critical safety and holding component engineered specifically for the WG 190 Series transmission. This OEM genuine part integrates directly into the rear section of the transmission housing, where it mechanically locks the output shaft to prevent vehicle rollaway when parked. The SKU 4657.109.416 is precision-machined to interface seamlessly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT, ensuring positive engagement and disengagement under heavy load conditions. As a genuine ZF part, it guarantees factory-specified clamping force and wear resistance for industrial driveline applications.
Symptoms of Failure
- Intermittent parking brake release failure: The brake may stick or fail to disengage fully, causing drag and overheating in the HOUSING REAR PART.
- Vehicle creep on inclines: Worn internal components allow the output shaft to rotate slightly when the brake is applied, a classic sign of internal wear.
- Metallic grinding or clicking noises: Damaged pawls or springs produce audible sounds during engagement, often accompanied by vibration.
- Oil contamination in brake cavity: Seal failure allows transmission fluid to migrate into the parking brake assembly, reducing friction and causing erratic operation.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.109.416 |
| Material | Hardened alloy steel / sintered metal |
| Weight | 2.4 kg (5.3 lbs) |
| Dimensions (L x W x H) | 185 mm x 120 mm x 65 mm |
| OEM Reference | ZF 4657.109.416 |
| Operating Temperature Range | -40°C to +120°C |
| Max Holding Torque | 1,200 Nm |
Compatibility
This parking brake assembly is primarily designed for the ZF WG 190 Series, but it also fits the WG 180 and WG 200 transmission families due to shared mounting interfaces. It is compatible with the HOUSING REAR PART (4472239184) used in later production runs. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101051 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201151 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657201103 | HOUSING REAR PART | Rear housing supporting output flange |
| 4472239184 | HOUSING REAR PART | Alternate rear housing variant |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100801 | CAP SCREW | Fastener for brake mounting |
| 4656301148 | FIXING PLATE | Retains brake assembly in position |
| 4657301032 | SCREEN SHEET | Debris filter for oil circuit |
| 4657301033 | SCREEN SHEET | Secondary debris filter |
| 0636100803 | CAP SCREW | Alternate fastener for housing |
Frequently Asked Questions
Q: Can the 4657.109.416 parking brake be rebuilt, or must it be replaced?
A: This is a sealed OEM assembly; ZF recommends full replacement rather than rebuilding to maintain safety integrity. Internal springs and pawls are not serviceable separately.
Q: Does this part require special tools for installation?
A: Yes, a torque wrench and a ZF-specific alignment fixture are recommended to ensure correct engagement depth with the HOUSING REAR PART. Over-torquing can distort the brake drum.
Q: How do I confirm this part fits my WG190 transmission?
A: Check the transmission data plate for the serial number prefix “WG190”. If the housing casting number matches 4657.109.416, it is a direct fit. For hybrid units, consult the HOUSING REAR PART compatibility chart.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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