ZF 4699.397.023 FRAME | OEM Genuine Part

Overview

The ZF 4699.397.023 FRAME is a structural core component engineered for heavy-duty construction machinery transmissions. This OEM genuine part serves as the rigid backbone that houses and aligns the gear train, shafts, and clutch assemblies within the transmission casing. Without this frame, the internal components cannot maintain proper spacing under extreme torque loads. The SKU 4699.397.023 is precision-machined to factory tolerances, ensuring that the 4699101094 HOUSING and the 4699103063 OUTPUT shaft remain perfectly centered during operation. It is a non-serviceable wear item that must be replaced if cracked or distorted to prevent catastrophic transmission failure.

Symptoms of Failure

• Transmission misalignment and vibration: A warped or cracked frame causes the 4699001092 GK10 gear set to run out of true, producing low-frequency rumble at idle and high-frequency chatter under load.
• Oil leaks at housing joints: When the frame distorts, the sealing surface against the 0501329881 HOUSING COVER becomes uneven, allowing transmission fluid to weep out around the perimeter.
• Hard shifting or gear slippage: A fatigued frame allows the clutch packs to shift out of alignment, resulting in delayed engagement or unexpected neutral conditions during operation.
• Metallic debris in the oil pan: As the frame cracks, small fragments of cast iron can break free and circulate through the hydraulic system, damaging pumps and valves.

Technical Specifications

Compatibility

This frame is designed for ZF WG series powershift transmissions commonly used in wheel loaders, dozers, and graders. It is a direct fit for the WG180, WG200, and WG250 models. It also appears in select 4WG-200 and 6WG-250 variants. Always verify the casting number on your existing frame before ordering. The 4699102159 INPUT shaft and 4699302290 DRIVE PINION must be inspected for wear when replacing this frame, as misalignment often damages these mating parts.

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