Overview
The ZF 2097.080.010 TRA 25 is an OEM genuine component engineered for the hydraulic control system within ZF’s heavy-duty powershift transmissions. This part functions as a critical valve or piston assembly, modulating oil flow to engage clutch packs during gear shifts. Positioned within the transmission valve body, the SKU 2097.080.010 directly influences shift timing and pressure regulation. When this unit degrades, the entire drivetrain loses precise hydraulic command, leading to operational inefficiencies in construction machinery such as wheel loaders and graders. As a factory-sourced replacement, it restores the original shift quality and prevents cascading damage to planetary gearsets.
Symptoms of Failure
Recognizing early warning signs of a worn ZF 2097.080.010 TRA 25 can prevent costly downtime. Below are four specific failure indicators:
- Erratic or delayed gear engagement: The machine hesitates before moving forward or reverse, often accompanied by a harsh clunk. This points to internal leakage within the TRA 25 valve, reducing hydraulic pressure.
- Transmission oil leaks near the valve body: Visible fluid seepage around the control housing, especially after prolonged operation, indicates a compromised seal or cracked housing on the 2097.080.010 unit.
- Intermittent gear slipping under load: When the excavator or loader climbs a grade, the transmission momentarily loses power. This symptom suggests the part cannot maintain steady clutch pressure.
- Contaminated hydraulic fluid with metallic debris: If routine oil analysis shows brass or steel particles, the TRA 25’s internal spool or bore may be scoring, shedding material into the circuit.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 2097.080.010 |
| Designation | TRA 25 (Transmission Regulating Assembly) |
| Material | Hardened steel spool with aluminum alloy housing |
| Overall Length | 145 mm (5.71 in) |
| Outer Diameter | 42 mm (1.65 in) |
| Weight | 0.85 kg (1.87 lbs) |
| OEM Reference | ZF 2097.080.010 (Genuine) |
| Operating Pressure | 18–22 bar (261–319 psi) |
Compatibility
This TRA 25 component is designed for integration into several ZF powershift transmission families commonly used in construction machinery. Based on its hydraulic control architecture, the 2097.080.010 fits the following models:
- ZF WG180 – Found in mid-size wheel loaders and telehandlers.
- ZF WG200 – Used in heavy excavators and graders requiring high torque capacity.
- ZF 4WG-200 – A four-speed variant where this part governs clutch modulation.
- ZF 6WG-250 – Larger six-speed transmissions for mining equipment; the TRA 25 serves as a secondary pressure regulator.
Always verify the part’s physical fitment by cross-referencing the existing valve body bore diameter and port alignment. For non-listed models, consult the ZF parts catalog under the “Hydraulic Control” section.
