ZF 0501.214.551 BRAKE

Overview

The ZF 0501.214.551 BRAKE is a critical OEM genuine friction component engineered for heavy-duty stopping power within ZF powershift transmissions used in construction machinery. This brake assembly directly engages the planetary gear set to halt output rotation, providing controlled deceleration during loading, grading, and excavation cycles. The SKU 0501.214.551 is specifically designed to withstand high thermal loads and repetitive engagement without warping. It sits within the transmission housing, adjacent to the 4699101080: HOUSING, which encloses the clutch packs and rotating shafts. Proper installation requires the 0630513065: SNAP RING to secure axial positioning, while the 0634306309: O-RING ensures hydraulic circuit integrity around the brake piston.

Symptoms of Failure

• Transmission brake drag during neutral – Worn friction material causes residual contact, leading to overheating and reduced fuel efficiency. This is a common “ZF brake drag symptom” in WG series units.
• Intermittent gear slipping under load – When the 0501.214.551 brake loses clamping force, the transmission may momentarily lose drive on inclines or during heavy digging, often described as “transmission slipping when hot.”
• Metallic grinding noise from the bell housing – Advanced wear exposes steel backing plates, producing a distinct “grinding sound in ZF transmission” during brake application.
• Hydraulic fluid contamination with dark particles – Friction material shedding enters the oil circuit, requiring immediate replacement of the brake and thorough flushing of the 0501329881: HOUSING COVER assembly.

Technical Specifications

Compatibility

This brake disc is primarily used in ZF WG180, WG200, and WG210 powershift transmissions found in wheel loaders, telehandlers, and graders from manufacturers such as Caterpillar, Volvo, and JCB. It also fits select ZF 4WG-200 and 6WG-200 series units. Always verify spline count and stack height against your existing 4699101080: HOUSING dimensions before ordering. The brake is not compatible with older WG150 or WG170 models without a housing adapter kit.

Related Components