Overview
The ZF 6073.015.553 EST 37 A for WG210 is an OEM genuine electronic shift actuator, a critical component within the ZF WG 210 series powershift transmission. This part, identified by SKU 6073.015.553, serves as the primary interface between the vehicle’s electronic control unit and the transmission’s hydraulic valve body. It precisely controls clutch engagement and gear selection, ensuring smooth, reliable shifting under heavy load conditions. The actuator sits directly on the transmission housing, converting electrical signals into mechanical movement to modulate hydraulic pressure. When paired with a robust TRANSMISSION HOUSING, this unit guarantees consistent performance in demanding industrial applications.
Symptoms of Failure
When the ZF 6073.015.553 EST 37 A begins to fail, operators will notice distinct operational issues. Common failure symptoms include:
- Erratic or delayed gear engagement: The transmission hesitates or clunks harshly when shifting, often due to internal solenoid wear or electronic degradation within the actuator.
- Intermittent loss of forward or reverse: The vehicle may suddenly fail to move in a selected direction, a classic sign of a failing shift actuator losing communication with the valve body.
- Hydraulic oil contamination near the actuator: Internal seals can degrade, allowing transmission fluid to seep past the electrical connector, leading to “oil leaks from shift actuator” issues.
- Transmission stuck in neutral or limp mode: The system may default to a safe state, preventing gear selection entirely, often accompanied by diagnostic fault codes related to the EST 37 A circuit.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 6073.015.553 |
| Designation | EST 37 A (Electronic Shift Transmitter) |
| Material | Die-cast aluminum housing with sealed electronics |
| Weight | Approx. 1.8 kg (4.0 lbs) |
| OEM Reference | ZF Friedrichshafen AG |
| Operating Voltage | 12V / 24V DC (vehicle dependent) |
| Connector Type | Deutsch DT series, 12-pin |
Compatibility
This OEM genuine part is specifically engineered for the WG 210 Series transmission family. Based on its design and function, the 6073.015.553 EST 37 A is also compatible with select models in the WG180 and WG200 series, as these share a common electronic architecture and mounting interface. It is a direct replacement for units requiring the EST 37 A actuator. For proper installation, ensure the HOUS.FRONT SECT and HOUSING REAR PART are free of debris. In some configurations, the HOUSING REAR SECTION must be inspected for alignment before mounting the actuator.
Related Components
These parts are commonly sourced alongside the 6073.015.553 for a complete rebuild or repair of the WG210 shift assembly.
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for the gear train |
| 4657201166 | HOUS.FRONT SECT | Front section of the transmission housing |
| 4657201170 | HOUSING REAR PART | Rear housing component for output shaft support |
| 4657298102 | HOUSING REAR SECTION | Alternate rear housing section variant |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100801 | CAP SCREW | Fastener for securing actuator to housing |
| 4656301148 | FIXING PLATE | Mounting bracket for shift actuator |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301033 | SCREEN SHEET | Secondary filter screen for oil return |
| 0636100803 | CAP SCREW | High-torque fastener for rear housing |
