Overview
The ZF 4644.023.049 3 WG 200 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway machinery. This assembly integrates the torque converter, clutch packs, and planetary gear sets into a single, pre-assembled housing, serving as the primary power transfer module within the WG 200 series. As a direct replacement for the OEM SKU 4644.023.049, this unit eliminates the need for piecemeal component sourcing, reducing installation downtime. It sits at the core of the driveline, converting engine torque into controlled, multi-speed output for loaders, graders, and industrial tractors.
Symptoms of Failure
When the ZF 4644.023.049 assembly begins to degrade, operators will notice distinct operational deficits. Recognizing these signs early prevents catastrophic driveline damage.
- Delayed or harsh directional shifts: A worn clutch pack or failing valve body within the assembly causes a noticeable lag when shifting from forward to reverse, often accompanied by a jarring engagement.
- Progressive hydraulic oil leaks at the bell housing: Seals on the input shaft or torque converter hub degrade, leading to visible drips of ATF or hydraulic fluid pooling under the transmission bell housing.
- Intermittent gear slipping under load: The transmission loses power transfer during heavy digging or climbing, with engine RPM rising without a corresponding increase in ground speed, indicating worn friction discs.
- Elevated operating temperatures and whining noise: Internal bearing wear or pump cavitation generates a high-pitched whine, coupled with transmission oil temperatures exceeding normal operating ranges.
Technical Specifications
| Specification | Value |
|---|---|
| Assembly Type | Complete Powershift Unit (3 WG 200) |
| OEM Part Number | 4644.023.049 |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 620 mm |
| Housing Material | High-tensile cast iron |
| Input Spline Count | 14-tooth, SAE standard |
| Torque Converter Diameter | 340 mm |
| OEM Reference | ZF 3 WG 200 |
Compatibility
This complete assembly is engineered for the ZF WG 200 Series transmission family. Based on the part type and spline configuration, it is a direct fit for the following models and their derivatives:
- ZF 3 WG 200 (Primary application)
- ZF 4 WG 200 (Compatible with adapter housing modifications)
- ZF WG 180 (Shared clutch pack architecture, verify bell housing)
- ZF WG 210 (Limited compatibility; confirm torque converter match)
This unit is commonly used in Case IH, New Holland, and JCB loader backhoes and telehandlers that utilize the ZF WG 200 platform. Always cross-reference your machine’s serial number with the SKU 4644.023.049 to ensure correct fitment.
