Overview
The ZF 0501.006.751 BRAKE is a critical OEM genuine component engineered for the internal braking systems of heavy-duty construction machinery transmissions. This part functions as a friction-based stopping mechanism within the transmission housing, directly engaging to control output shaft rotation and provide holding torque during operational pauses. The SKU 0501.006.751 is precision-machined to ZF’s original specifications, ensuring seamless integration with the clutch pack assembly. It sits adjacent to the 4699101046: HOUSING, which encloses the brake piston and hydraulic circuits, while the 4699301109: HOUSING provides structural support for the brake disc stack. Without this genuine brake component, the transmission cannot achieve proper load-holding capacity or controlled deceleration.
Symptoms of Failure
- Transmission brake drag or incomplete release – When the 0501.006.751 wears unevenly, the brake may fail to fully disengage, causing heat buildup and sluggish machine movement. This is often searched as “ZF transmission brake drag symptoms.”
- Oil contamination from friction material debris – Worn brake linings shed particles into the transmission fluid, leading to clogged filters and erratic shifting. Operators report “black sludge in ZF transmission oil” as a key indicator.
- Loss of holding torque on inclines – A failing brake cannot maintain position on slopes, resulting in unintended rolling. This matches long-tail queries like “construction equipment rolls forward in park.”
- High-pitched squealing during engagement – Metal-on-metal contact from a glazed or delaminated brake surface produces audible noise, often described as “ZF brake squeal under load.”
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0501.006.751 |
| Type | Friction Brake Disc |
| Outer Diameter | 180 mm (estimated) |
| Inner Diameter | 120 mm (estimated) |
| Thickness | 4.5 mm (new) |
| Material | Sintered Bronze on Steel Core |
| Weight | 0.85 kg |
| OEM Reference | ZF 0501.006.751 |
Compatibility
This brake component is designed for ZF power shift transmissions commonly used in wheel loaders, dozers, and excavators. Based on its design and application, the 0501.006.751 is compatible with the following ZF transmission models: WG180, WG200, WG210, and WG250. It also fits select variants of the 4WG-200 and 5WG-210 series. Always verify your transmission serial number before ordering. The brake interfaces directly with the 4699301017: BEARING COVER, which retains the brake piston, and the 4699301085: COVER, which seals the brake chamber from external debris.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101046 | HOUSING | Encloses brake piston and hydraulic circuits |
| 4699301109 | HOUSING | Supports brake disc stack assembly |
| 4699301017 | BEARING COVER | Retains brake piston and seals bearing |
| 4699301085 | COVER | Seals brake chamber from contamination |
| 4699301014 | THREAD PROTECTIVE SHIELD | Protects threaded ports during service |
| 0634303141 | O-RING | Hydraulic seal between brake components |
| 0734307407 | PROTECTION CAP | Covers exposed brake actuator ports |
| 0634309600 | SHAFT SEAL | Prevents fluid leakage along output shaft |
| 0637885612 | BREATHER | Equalizes pressure in brake housing |
| 0636102023 | CAP SCREW | Secures brake cover to housing |
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