Overview
The ZF 4651.006.024 6 WG 100(500) Powershift Transmission Assembly | Complete Unit is a fully assembled, drop-in replacement for heavy-duty ZF powershift systems. This complete unit integrates the main gear train, clutch packs, and hydraulic control components into a single, pre-tested assembly. Designed for off-highway vehicles such as loaders, graders, and industrial tractors, the SKU 4651.006.024 serves as the core rotating and shifting assembly within the transmission housing. It sits directly between the torque converter and the output driveline, managing power distribution across six forward gears. For proper installation, this unit must be paired with a robust TRANSMISSION HOUSING to ensure correct alignment and sealing.
Symptoms of Failure
- Erratic gear engagement or slipping under load: Worn clutch discs or hydraulic seal degradation inside the assembly cause delayed shifts or complete loss of drive, especially when climbing grades.
- Internal hydraulic pressure loss: Cracks or fatigue in the housing sections lead to low line pressure, resulting in soft shifts and overheating of the transmission fluid.
- Metallic debris in the oil pan: Bearing or gear spalling generates fine metal particles, often accompanied by a whining noise from the transmission center section.
- External oil leaks near the bell housing: Failed O-rings or gaskets at the interface between the assembly and the HOUSING allow fluid to escape, causing low oil levels and eventual transmission failure.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4651.006.024 |
| Assembly Type | Complete Powershift Unit (6 WG 100/500) |
| Overall Length | 580 mm (22.8 in) |
| Dry Weight | 95 kg (209 lb) |
| Housing Material | High-strength aluminum alloy |
| OEM Reference | ZF 6 WG 100(500) |
| Max Input Torque | 500 Nm (369 lb-ft) |
| Number of Gears | 6 forward / 3 reverse |
Compatibility
This complete unit is engineered for the ZF WG 100 Series of powershift transmissions. It is directly compatible with models including the WG 100, WG 100(500), and WG 100(600) variants. While primarily designed for the WG 100 family, the assembly shares mounting patterns and hydraulic interfaces with the WG 180 and WG 200 series when used with the correct HOUSING adapter. Always verify the bell housing bolt pattern and input shaft spline count before installation. A new O-RING is required at every housing joint to prevent fluid bypass.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101007 | TRANSMISSION HOUSING | Encloses and supports the complete gear assembly |
| 4651301029 | HOUSING | Intermediate housing section for clutch pack mounting |
| 0634303928 | O-RING | Seals the housing-to-assembly interface |
| 4651301024 | HOUSING | Rear housing adapter for output shaft support |
| 4651203002 | SCREEN SHEET | Fine mesh filter for hydraulic oil circuit |
| 4651303005 | SCREEN SHEET | Coarse debris screen for sump protection |
| 0636101032 | CAP SCREW | Fastener for housing flange connections |
| 0630361028 | SEALING CAP | Plugs unused hydraulic ports |
| 4475280060 | SCREW PLUG | Threaded plug for drain or test ports |
| 0634303312 | O-RING | Seals the screw plug and cap screw interfaces |
