Overview
The ZF 4657.109.410 PARKING BRAKE is a critical safety and locking component engineered specifically for the WG190 and WG210 transmission series. This OEM genuine part integrates directly into the rear section of the gearbox assembly, engaging the output shaft to secure the vehicle when stationary. The SKU 4657.109.410 ensures precise mechanical locking action, preventing unintended movement during parking or loading operations. It works in conjunction with the 4657101034: TRANSMISSION HOUSING to maintain structural integrity under load, and relies on the 4657201027: HOUS.FRONT SECT for proper alignment of its actuation mechanism.
Symptoms of Failure
- Vehicle rolls on inclines when parking brake is engaged: A worn 4657.109.410 unit loses its clamping force, causing the transmission to fail holding the vehicle stationary on slopes.
- Grinding or clicking noises during engagement: Damaged internal pawls or springs within the parking brake assembly produce audible metallic sounds when the brake is applied or released.
- Parking brake fails to disengage fully: Sticking components lead to drag, overheating, and reduced fuel efficiency during operation.
- Oil seepage near the rear output flange: A compromised seal on the parking brake housing allows transmission fluid to escape, often accompanied by a drop in hydraulic pressure.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 4657.109.410 |
| OEM Reference | ZF 4657.109.410 |
| Material | Hardened alloy steel with corrosion-resistant coating |
| Weight | 2.8 kg (6.2 lbs) |
| Dimensions (L x W x H) | 210 mm x 95 mm x 80 mm |
| Torque Capacity | Up to 2,500 Nm |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This parking brake is primarily designed for the ZF WG190 and WG210 series transmissions. It is also compatible with the WG180 and WG200 models when used with the appropriate 4657201012: HOUSING REAR PART. For correct installation, ensure the 0631306792: CYLINDRICAL PIN is properly seated to align the brake assembly with the output shaft. Always verify your transmission model number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101034 | TRANSMISSION HOUSING | Main casing that encloses the gear train and parking brake assembly |
| 4657201027 | HOUS.FRONT SECT | Front section housing that supports input shaft bearings |
| 4657201012 | HOUSING REAR PART | Rear casing that mounts the parking brake mechanism |
| 0631306792 | CYLINDRICAL PIN | Alignment pin for precise positioning of housing sections |
| 0636100801 | CAP SCREW | Fastener securing the parking brake to the housing |
| 4656301148 | FIXING PLATE | Retention plate for locking the brake assembly in place |
| 4657301032 | SCREEN SHEET | Fine mesh filter protecting the brake oil feed circuit |
| 4657301033 | SCREEN SHEET | Secondary filter for debris protection in the hydraulic line |
| 0636100803 | CAP SCREW | High-tensile bolt for rear housing attachment |
| 4681301040 | OIL FEED.HOUSG. | Lubrication conduit delivering oil to the parking brake assembly |
Frequently Asked Questions
Q: How do I know if my ZF WG190 needs a new 4657.109.410 parking brake?
A: If you notice the vehicle creeping forward on a 5% grade with the brake fully engaged, or if the brake lever feels loose with excessive travel, the internal components are likely worn and replacement is necessary.
Q: Can I install this parking brake without replacing the housing sections?
A: It is strongly recommended to inspect the 4657201012: HOUSING REAR PART for cracks or wear. A damaged housing can misalign the new brake, leading to premature failure.
Q: What torque specification should I use for the cap screws?
A: For the 0636100801: CAP SCREW, apply 85 Nm (63 ft-lbs) using a calibrated torque wrench. Always use new fasteners to ensure proper clamping force.
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Phone: +86 158 2286 3467 |
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