ZF 5838.300.512 BRAKE CARRIER | OEM Genuine Part

Overview

The ZF 5838.300.512 BRAKE CARRIER is a critical structural component within the final drive assembly of heavy-duty construction machinery transmissions. This OEM genuine part houses the brake disc pack and actuation mechanism, ensuring reliable stopping power under extreme loads. Positioned directly between the axle housing and the wheel hub, the brake carrier provides the precise alignment needed for the braking system to engage evenly. The SKU 5838.300.512 is engineered to ZF’s original specifications, guaranteeing a direct fit and long service life in demanding environments such as wheel loaders and graders.

Symptoms of Failure

When the ZF 5838.300.512 brake carrier wears or becomes damaged, operators often notice brake fluid seepage around the wheel hub, indicating a compromised seal surface. Another common failure sign is uneven brake pad wear or dragging brakes, caused by warping or corrosion on the carrier’s mounting face. You may also experience abnormal grinding noises during low-speed turns, which points to internal debris contamination. Finally, reduced braking efficiency or a spongy pedal feel can occur if the carrier’s internal passages become blocked, preventing proper hydraulic pressure buildup.

Technical Specifications

Compatibility

This brake carrier is primarily designed for ZF’s WG180 and WG200 series powershift transmissions, commonly found in construction machinery from leading OEMs. It also fits select variants of the WG150 and WG250 series where the final drive uses a wet brake configuration. For verification, always cross-reference your existing carrier’s casting numbers with the 5838.300.512 stamping. When rebuilding the final drive, always inspect the 5838300626 DIFFERENTIAL HOUSING for cracks, and replace the 0750117075 TAPER ROLLER BEARING as a paired component. The 5838109012 DIFFERENTIAL and 2093209023 DIFFERENTIAL units also share the same lubrication circuit and should be checked for wear simultaneously.

Related Components

Frequently Asked Questions

Q: Can the 5838.300.512 brake carrier be reused after a brake disc failure?
A: It is not recommended. Metal debris from a failed disc often embeds into the carrier’s sealing surfaces, causing future leaks. Always replace the carrier and the 5838300811 THRUST WASHER when a brake disc has disintegrated.

Q: Does this part require any special tools for installation?
A: Yes, you will need a ZF-specific bearing puller to remove the old 0750117075 TAPER ROLLER BEARING from the carrier bore. A torque wrench capable of 450 Nm is also required for the mounting bolts.

Q: How does the 5838.300.512 differ from earlier brake carrier designs?
A: This version features an improved oil return channel that reduces cavitation in the wet brake chamber. It is backward-compatible with most WG180 housings but must be paired with the updated 5838300626 DIFFERENTIAL HOUSING for optimal performance.