Overview
The ZF 6057.318.696 EPROM Memory is a critical electronic component that governs the shift logic and performance parameters within ZF off-highway transmissions. This OEM genuine part stores the firmware that controls clutch pressure modulation, shift timing, and torque converter lock-up strategies. Physically seated on the transmission control unit (TCU) or within the main wiring harness junction, the 6057.318.696 chip acts as the transmission’s operational brain. Replacing this specific EPROM is often necessary when recalibrating a transmission for different vehicle applications or after a control unit failure. The SKU 6057.318.696 is laser-etched on the ceramic housing for positive identification.
Symptoms of Failure
When the ZF 6057.318.696 EPROM begins to degrade or fails, operators will notice distinct operational anomalies. These failure modes are often misdiagnosed as mechanical wear, making correct identification essential.
- Erratic shift patterns and hunting: The transmission may randomly upshift or downshift without driver input, or fail to hold a gear under load. This is a classic sign of corrupted memory data.
- Transmission fails to shift into forward or reverse: A complete loss of directional response, often accompanied by a flashing warning light on the dash, indicates the EPROM is not communicating with the solenoid valves.
- Torque converter shudder at low speeds: If the lock-up clutch engages at incorrect RPMs due to lost calibration data, the machine will vibrate severely during inching operations.
- Intermittent limp-home mode activation: The transmission will default to a single gear (usually 2nd or 3rd) with reduced power, even after a system reset, pointing to a non-volatile memory fault.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 6057.318.696 |
| Memory Type | EPROM (Erasable Programmable Read-Only Memory) |
| Storage Capacity | 64 Kbit (8K x 8) |
| Package Material | Ceramic DIP with quartz window |
| Dimensions (L x W x H) | 30.5 mm x 13.5 mm x 4.5 mm |
| Weight | 6.2 grams |
| Operating Temperature | -40°C to +125°C |
| OEM Reference | ZF Friedrichshafen AG |
Compatibility
This EPROM memory chip is engineered for use with ZF’s modular powershift transmission series commonly deployed in construction machinery. While physical pinouts are standardized, the firmware data is specific to the transmission model and vehicle OEM. Verified compatible ZF transmission families include:
- ZF WG180 series (used in wheel loaders and graders)
- ZF WG200 series (medium-duty articulated dump trucks)
- ZF WG211 series (heavy-duty excavator and dozer applications)
- ZF 4WG-310 series (large mining trucks and material handlers)
Note: Always cross-reference the existing EPROM’s part number and vehicle VIN before installation. The 6057.318.696 replaces earlier revisions 6057.318.695 and 6057.318.694.
