Overview
The ZF 0501.009.143 BRAKE is an OEM genuine friction component engineered for heavy-duty stopping power within ZF construction machinery transmissions. This part number, SKU 0501.009.143, functions as a hydraulic brake assembly that engages directly on the output shaft to hold the vehicle stationary or provide dynamic braking during operation. It is a critical safety and control element in the drivetrain, ensuring the machine remains secure on inclines and during loading cycles. The brake unit interfaces with the main HOUSING to contain hydraulic pressure and align the friction discs.
Symptoms of Failure
When the ZF 0501.009.143 brake wears out, operators typically notice three distinct failure modes. First, transmission brake drag occurs, where the machine hesitates or struggles to move forward due to residual friction. Second, hydraulic oil contamination from worn friction material appears as dark, gritty fluid in the sump. Third, loss of holding power on grades becomes evident, causing the vehicle to creep when the brake is applied. Fourth, intermittent gear slipping during low-speed maneuvering often points to a failing brake pack that cannot fully disengage.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0501.009.143 |
| Type | Hydraulic Wet Brake Assembly |
| Outer Diameter | 180 mm (approx.) |
| Inner Diameter | 120 mm (approx.) |
| Thickness (Stacked) | 42 mm (approx.) |
| Material | Sintered Bronze on Steel Core |
| Weight | 1.8 kg (approx.) |
| OEM Reference | ZF 0501.009.143 |
Compatibility
This brake assembly is primarily designed for ZF WG180, WG200, and WG210 series transmissions commonly found in wheel loaders, telehandlers, and graders. It also fits select models of the ZF 4WG-200 and 6WG-200 power shift transmissions. The part mounts directly inside the HOUSING and is secured by the BEARING COVER and COVER components. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101123 | HOUSING | Encloses brake pack and directs oil flow |
| 4699301208 | HOUSING | Secondary housing for output shaft support |
| 4699301017 | BEARING COVER | Seals and preloads the brake piston |
| 4699301085 | COVER | Protects the brake actuator from debris |
| 4699301014 | THREAD PROTECTIVE SHIELD | Guards threads during installation |
| 0634303141 | O-RING | Hydraulic seal for brake piston |
| 0734307425 | PROTECTION CAP | Covers hydraulic ports when disconnected |
| 0501329618 | VENT VALVE | Relieves pressure from brake circuit |
| 0636102023 | CAP SCREW | M10 fastener for housing assembly |
| 0636101008 | CAP SCREW | M8 fastener for cover attachment |
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