ZF 2093.070.009 TRA 20 | OEM Genuine Part

Overview

This OEM genuine ZF 2093.070.009 TRA 20 is a critical internal component engineered for the final drive assembly of heavy-duty construction machinery transmissions. Positioned within the differential housing, this part manages torque distribution from the axle to the wheels, ensuring smooth power transfer under extreme loads. The SKU 2093.070.009 is precision-machined to OEM tolerances, making it a direct replacement for worn units in ZF drivetrains. It works in concert with the 2093109022 DIFFERENTIAL to maintain gear alignment and reduce backlash during operation.

Symptoms of Failure

• Oil leaks around the axle housing: When the 2093.070.009 seal surface wears, hydraulic fluid seeps past the component, leaving visible puddles under the machine. This is a common search query for “ZF transmission oil leak repair.”
• Gear slipping under load: A worn TRA 20 causes intermittent power loss during excavation or lifting, often described as “transmission slipping when digging.”
• Metallic grinding noise from the differential area: As the part degrades, metal-on-metal contact produces a distinct whine or grind, particularly during turns—a classic sign of “ZF differential noise troubleshooting.”
• Vibration in the driveline: Excessive play in the assembly leads to shuddering at low speeds, frequently searched as “construction equipment vibration after gear change.”

Technical Specifications

Compatibility

This TRA 20 component is designed for ZF WG180, WG200, and WG210 series transmissions commonly found in wheel loaders, telehandlers, and graders. It also fits select models of the ZF 4WG-200 and 6WG-200 families. For proper installation, pair it with the 0750117075 TAPER ROLLER BEARING to support axial loads, and the 2093209096 DIFFERENTIAL for torque distribution. The 2093309073 DIFF.HOUSING provides the structural enclosure for this assembly.

Related Components

Frequently Asked Questions

Q: How do I know if the 2093.070.009 is the correct part for my ZF transmission?
A: Verify your transmission model number (e.g., WG180 or WG200) and cross-reference the part number stamped on the old component. This TRA 20 is specific to final drive assemblies and will not fit planetary gear sets.

Q: Can I replace this part without removing the entire transmission?
A: Yes, in most wheel loaders and telehandlers, the 2093.070.009 can be accessed by removing the axle shaft and differential cover. However, you must also inspect the 0750117075 TAPER ROLLER BEARING for wear during service.

Q: What causes premature failure of the TRA 20?
A: Contaminated transmission fluid (from water or debris) and improper torque on the housing bolts are the leading causes. Always replace the 0631100223 SPRING PIN and 0730300820 THRUST WASHER when installing a new TRA 20 to ensure proper clearance.