Overview
The ZF 5838.128.005 BRAKE is a critical OEM genuine component engineered for the demanding environment of construction machinery drivelines. This part functions as a service brake within the final drive assembly, providing the necessary stopping force to control heavy loads and ensure operator safety. It sits directly within the planetary gear set of the transmission, interfacing with the axle housing to modulate wheel speed. The SKU 5838.128.005 is specifically designed to meet ZF’s rigorous tolerances, ensuring consistent friction engagement and heat dissipation under extreme torque loads. When paired with a properly maintained 5838109012: DIFFERENTIAL, this brake assembly ensures balanced power distribution and reliable deceleration across all drive modes.
Symptoms of Failure
- Intermittent brake drag or overheating: When the 5838.128.005 wears unevenly, the friction material can cause the brake to remain partially engaged, leading to excessive heat generation and reduced transmission fluid life.
- Loss of holding power on inclines: A worn brake will fail to lock the output shaft, causing the machine to roll backward on slopes—a common long-tail search query for “construction equipment brake failure on grade.”
- Metallic grinding noises during deceleration: As the brake disc wears down to the backing plate, metal-on-metal contact produces a distinct grinding sound, often accompanied by vibration in the operator cab.
- Contaminated transmission fluid: Degraded brake material sheds particles into the oil, which can clog filters and damage the 0750117075: TAPER ROLLER BEARING if not addressed promptly.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 5838.128.005 |
| Material | Sintered metallic friction lining on steel core |
| Outer Diameter | 280 mm (estimated) |
| Inner Diameter | 180 mm (estimated) |
| Thickness | 12.5 mm (new) |
| Weight | 2.8 kg (6.2 lbs) |
| OEM Reference | ZF 5838.128.005 |
| Operating Torque | 1,200 Nm (peak) |
Compatibility
This brake component is designed for integration into ZF’s heavy-duty transmission series commonly found in wheel loaders, excavators, and telehandlers. It is a direct fit for the WG180 and WG200 series transmissions, as well as the WG250 series used in larger construction machinery. The 5838.128.005 also serves as a replacement part in certain ERGOFLEX driveline configurations. For complete axle assembly, ensure compatibility with the 2093209023: DIFFERENTIAL and the 5838300626: DIFFERENTIAL HOUSING to maintain proper clearance and oil flow.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads |
| 2093209023 | DIFFERENTIAL | Secondary torque distribution unit |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gears |
| 0631329088 | SPRING PIN | Secures brake assembly alignment |
| 5838300811 | THRUST WASHER | Reduces axial friction |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 5838300633 | AXLE | Rotates wheel hub |
| 5838300753 | THRUST WASHER | Controls gear end-play |
| 5838300818 | THRUST WASHER | Prevents axial movement |
Frequently Asked Questions
Q: How do I know if the 5838.128.005 brake is the correct replacement for my ZF transmission?
A: Verify your transmission model number (e.g., WG180, WG200) stamped on the housing. This brake is also compatible with ERGOFLEX systems; cross-reference your old part’s dimensions against the technical specifications table above.
Q: Can I install this brake without replacing the differential components?
A: While the brake can be replaced independently, we strongly recommend inspecting the 5838109012: DIFFERENTIAL and the 5838300626: DIFFERENTIAL HOUSING for wear, as debris from a failed brake often damages these adjacent parts.
Q: What is the typical service life of this brake in construction machinery?
A: Under normal operating conditions with proper fluid maintenance, the 5838.128.005 lasts approximately 3,000 to 5,000 hours. Frequent heavy braking or contaminated oil will significantly shorten this interval.
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Phone: +86 158 2286 3467 |
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