ZF 2095.128.006 SERVICE BRAKE | OEM Genuine Part

Overview

The ZF 2095.128.006 SERVICE BRAKE is a critical hydraulic braking component engineered for the final drive assembly of heavy-duty construction machinery. This OEM genuine part functions as the primary stopping mechanism, applying friction directly to the rotating hub within the transmission’s axle system. Positioned internally within the wheel-end or axle housing, the service brake converts hydraulic pressure into mechanical clamping force to decelerate or hold the machine stationary under extreme loads. The SKU 2095.128.006 is specifically designed to interface with the differential assembly and axle bevel gear set, ensuring precise torque distribution during braking events. Replacing this unit with a genuine ZF part guarantees correct piston clearance and friction material composition for sustained performance in demanding environments like excavators and wheel loaders.

Symptoms of Failure

• Spongy or delayed brake pedal response – When the service brake loses internal hydraulic seal integrity, operators experience a soft pedal that must be depressed further before braking engages. This symptom often indicates worn piston seals or internal leakage within the 2095.128.006 unit.
• Uneven braking or machine pulling to one side – As friction material wears asymmetrically on the service brake, the machine will drift during hard stops. This is a common failure mode when the brake disc or lining has exceeded its service life.
• Visible hydraulic fluid seepage near the axle housing – External oil leaks around the brake chamber or wheel-end seal area signal that the service brake’s static seals have failed. Left unaddressed, this leads to complete brake fade and potential contamination of the DIFFERENTIAL assembly.
• Grinding or squealing noise during braking – Metallic contact sounds indicate the friction material has worn down to the backing plate, requiring immediate replacement of the 2095.128.006 to prevent scoring of the hub and DIFF.HOUSING.

Technical Specifications

Compatibility

This service brake is engineered for ZF’s heavy-duty powershift transmission series commonly deployed in construction machinery. It is a direct fit for the WG180 and WG200 transmission models, which are found in articulated dump trucks and graders. The 2095.128.006 also integrates with the WG150 series when paired with the correct DIFFERENTIAL and TAPER ROLLER BEARING kit. For WG250 applications, verify axle housing compatibility, as the brake mounting flange dimensions may require the DIFFERENTIAL AXLE variant. Always cross-reference your machine’s transmission serial number to confirm fitment.

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