ZF 4699.199.077 LOOSE PARTS | OEM Genuine Part

Overview

The ZF 4699.199.077 LOOSE PARTS assembly is a critical internal component designed for heavy-duty construction machinery transmissions. This OEM genuine part functions as a precision-machined spacer and alignment kit, positioned within the planetary gear set to maintain correct axial clearance and load distribution. The SKU 4699.199.077 is engineered to interface directly with the HOUSING and the INPUT shaft assembly, ensuring that all rotating elements remain securely indexed under high-torque conditions. Without this loose parts set, the transmission’s internal geometry can shift, leading to premature wear of adjacent components.

Symptoms of Failure

• Intermittent gear slipping under load: When the 4699.199.077 wears, the planetary carrier loses its precise shimming, causing the OUTPUT shaft to momentarily disengage during heavy excavation.
• Metallic grinding noise from the bell housing: Loose parts allow the GK25 clutch pack to contact the housing, producing a distinct scraping sound during gear changes.
• Oil contamination with fine metal particles: As the spacer degrades, it sheds debris into the hydraulic circuit, clogging filters and reducing clutch pack pressure.
• Vibration at the torque converter: Misalignment caused by a failing 4699.199.077 transmits harmonic oscillations through the driveline, noticeable at idle.

Technical Specifications

Compatibility

This genuine ZF loose parts set is primarily compatible with the WG180 and WG200 series transmissions commonly found in wheel loaders and excavators. It also fits select WG120 and WG250 models where the planetary carrier uses a shimmed spacer design. Always verify the internal stack height against the service manual for your specific transmission variant. The 4699.199.077 is not interchangeable with earlier WG series units that use a solid thrust washer.

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