ZF 4699.109.082 BRAKE | OEM Genuine Part

Overview

The ZF 4699.109.082 BRAKE is a critical OEM genuine component engineered for the internal wet brake pack assembly within ZF heavy-duty powershift transmissions. This part number, SKU 4699.109.082, functions as a friction disc or reaction plate that provides the clamping force necessary to halt output rotation in construction machinery. Positioned between the planetary gear sets and the output shaft, this brake component engages with hydraulic pressure to lock specific gear elements, enabling precise speed control and safe parking operations. Without this genuine ZF part, the transmission cannot maintain stationary torque or execute controlled deceleration under heavy loads.

Symptoms of Failure

• Transmission brake slipping under load – When the 4699.109.082 wears thin, the machine drifts forward or backward on inclines even with the brake engaged, a common long-tail search query for “ZF transmission won’t hold position.”
• Oil contamination with dark metallic particles – Friction material degradation from this brake disc sheds debris into the hydraulic circuit, often flagged in searches for “black transmission fluid ZF construction equipment.”
• Delayed engagement or shuddering during stop – Worn friction surfaces cause intermittent grabbing, leading to a “ZF brake chatter when stopping” complaint that worsens with heat buildup.
• Hydraulic pressure loss in brake circuit – Excessive clearance from a worn 4699.109.082 forces the piston to travel further, reducing system pressure and triggering “low brake pressure warning ZF.”

Technical Specifications

Compatibility

This brake disc is designed for use in ZF WG series powershift transmissions commonly found in wheel loaders, dozers, and telehandlers. It is a direct fit for the WG180, WG200, and WG211 models. The 4699.109.082 also integrates into certain 4WG-200 and 6WG-200 variants where the brake pack uses 210mm friction discs. Always verify stack height against your service manual, as this part is often replaced in sets alongside the 4699025150: GP25 piston assembly and the 4699101138: HOUSING that contains the brake drum.

During a full rebuild, the 4699102106: INPUT shaft and 4699103117: OUTPUT flange must be inspected for spline wear, as a damaged input or output can accelerate brake disc failure. For complete housing assembly, consider the 4699301218: HOUSING and 4699301224: HOUSING COVER to seal the brake chamber.

Related Components