ZF 4699.397.026 FRAME | OEM Genuine Part

Overview

The ZF 4699.397.026 FRAME is a critical structural component within the ZF transmission assembly, specifically engineered for heavy-duty construction machinery. This OEM genuine part serves as the rigid backbone that supports and aligns the internal gear train, clutch packs, and hydraulic circuits. Positioned between the main housing and the output section, the frame ensures precise axial and radial alignment under extreme torque loads. The SKU 4699.397.026 is machined from high-strength cast iron to withstand the vibrational stresses common in excavators, wheel loaders, and crawler dozers. Without this frame, the transmission cannot maintain the necessary clearances for smooth power transfer, making it indispensable for any rebuild or overhaul project.

Symptoms of Failure

When the ZF 4699.397.026 FRAME begins to wear or crack, operators will notice distinct performance issues. Transmission misalignment and gear whine are early indicators, often accompanied by intermittent gear slipping under load. As the frame fatigues, oil leaks at the housing-to-frame interface become common, particularly around the bolt bosses. In severe cases, abnormal vibration during shifting signals imminent structural failure. These symptoms are frequently searched by technicians looking for “ZF transmission frame crack symptoms” or “construction machinery gear slipping causes.”

Technical Specifications

Compatibility

This frame is designed for use in ZF WG series transmissions commonly installed in construction machinery. It is directly compatible with the ZF WG180, WG200, and WG250 models. Additionally, it fits select variants of the ZF WG120 and WG150 power shift transmissions used in telescopic handlers and compact loaders. Always verify your transmission model number before ordering.

Related Components

During installation, the 4699.397.026 FRAME is typically paired with several adjacent parts. The 4699101108 HOUSING provides the outer enclosure, while the 0501329881 HOUSING COVER seals the assembly. A 0630513065 SNAP RING secures the bearing in place, and the 0634306309 O-RING prevents fluid leaks at the joint. For a complete rebuild, also consider the 0637885612 BREATHER and the 0769100082 TYPE PLATE for identification.

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