ZF 4699.826.002 GP23 | OEM Genuine Part

Overview

The ZF 4699.826.002 GP23 is a precision-engineered OEM genuine part designed for heavy-duty construction machinery transmissions. This component functions as a critical interface within the planetary gear set, ensuring smooth torque transfer and load distribution across the drivetrain. Positioned in the intermediate housing assembly of ZF’s modular transmission systems, the GP23 (SKU: 4699.826.002) directly supports the input and output shafts, maintaining alignment under extreme operational stress. Its robust construction minimizes vibration and wear, making it indispensable for excavators, wheel loaders, and graders operating in demanding environments.

Symptoms of Failure

• Oil leaks around the transmission housing: When the GP23 wears, degraded sealing surfaces allow hydraulic fluid to escape, often visible as drips near the HOUSING or HOUSING joints.
• Gear slipping under load: A worn GP23 fails to maintain proper gear mesh engagement, causing intermittent power loss during uphill climbs or heavy lifting.
• Abnormal whining or grinding noises: Metal fatigue in the GP23 creates audible friction, particularly during gear shifts or low-speed operation.
• Increased transmission temperature: Excessive play in the GP23 generates heat, triggering warning lights or reduced performance in ZF WG180 and WG200 models.

Technical Specifications

Compatibility

This GP23 component is engineered for ZF transmissions commonly used in construction machinery, including the WG180, WG200, and WG250 series. It also integrates with the Ecomat 4HP and 6HP models found in mid-size loaders and dozers. For proper installation, ensure the SEALING RING is replaced simultaneously to prevent fluid bypass, and verify the SCREW PLUG torque specifications (45 Nm) to avoid housing cracks. The GP23 is not backward-compatible with pre-2005 ZF transmissions without adapter modifications.

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