ZF 2093.070.039 TRA 20 | OEM Genuine Part

Overview

The ZF 2093.070.039 TRA 20 is a precision-engineered transmission component designed for heavy-duty construction machinery. This OEM genuine part functions as a critical torque transfer element within the final drive assembly of ZF powershift transmissions. Specifically, the SKU 2093.070.039 interfaces directly with the differential housing to manage load distribution between the axle shafts. When paired with a properly maintained 2093109028 DIFFERENTIAL, this part ensures smooth power delivery under extreme operating conditions. Its location within the transmission’s lower gear train makes it essential for maintaining driveline integrity during high-torque applications such as earthmoving and material handling.

Symptoms of Failure

• Intermittent gear slipping under load: When the 2093.070.039 wears, operators often report a momentary loss of drive power when climbing grades or pushing heavy loads. This occurs as the part loses its ability to maintain consistent gear mesh engagement.
• Metallic grinding noise during turns: A distinct grinding sound when steering at low speeds indicates excessive play between this component and the 2093309078 DIFF.HOUSING. This symptom typically worsens as the part degrades further.
• Oil contamination with metallic particles: Visible metal shavings in the transmission fluid suggest the 2093.070.039 is shedding material. This often coincides with reduced hydraulic pressure in the clutch packs.
• Vibration at highway speeds: Unusual chassis vibration when the machine reaches transport speeds indicates imbalance caused by uneven wear on this rotating assembly.

Technical Specifications

Compatibility

This component is engineered for ZF WG series transmissions commonly found in construction loaders and graders. It is a direct fit for the WG180, WG200, and WG210 models. The 2093.070.039 also integrates with the ZF 4WG-200 and 5WG-210 variants used in telescopic handlers. For proper installation, ensure the 0750117075 TAPER ROLLER BEARING is replaced simultaneously to maintain correct preload. The part also works with the 2093209094 DIFFERENTIAL in later production runs of the WG180 series.

Related Components

Frequently Asked Questions

Q: Can the 2093.070.039 be installed without replacing the taper roller bearing?
A: It is strongly advised to replace the 0750117075 TAPER ROLLER BEARING simultaneously. The bearing and this part share a wear surface, and reusing an old bearing will accelerate premature failure of the new component.

Q: What is the typical service life of this part in a wheel loader?
A: Under normal operating conditions with regular oil changes, the 2093.070.039 lasts approximately 4,000-6,000 hours. Harsh environments with high dust or continuous heavy loading may reduce this interval by 30%.

Q: Does this part require special tools for installation?
A> Yes, a hydraulic press and a bearing puller are necessary to avoid damaging the splines. Additionally, the 0631100223 SPRING PIN must be driven out and replaced with a new one during reassembly to ensure proper retention.