Overview
The ZF 4651.006.014 6 WG 100(500) Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. This assembly integrates the torque converter, clutch packs, and planetary gear sets into a single, pre-assembled module. As the core power transfer component in the WG 100 series, it converts engine torque into controlled, multi-speed output for loaders, graders, and industrial vehicles. The SKU 4651.006.014 is a direct OEM replacement, ensuring precise fitment and hydraulic compatibility. This complete unit eliminates the need for partial rebuilds, reducing downtime in demanding environments.
Symptoms of Failure
- Delayed or harsh gear engagement: When the internal clutch packs or seals wear, you may experience a noticeable lag or jarring shift when moving from neutral to forward or reverse. This often indicates internal hydraulic pressure loss within the 4651.006.014 assembly.
- Transmission overheating under load: A failing torque converter or worn friction plates generate excessive heat. If your transmission temperature gauge spikes during normal operation, the complete unit may be slipping internally.
- Oil leaks near the bell housing or PTO area: Degraded seals or cracks in the 4651101007: TRANSMISSION HOUSING can cause fluid to weep externally. Check for drips around the mating surfaces where the assembly joins the engine.
- Loss of power in higher gears: If the machine struggles to maintain speed on inclines or under load, the planetary gear sets inside the WG 100(500) may have suffered mechanical fatigue or bearing failure.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4651.006.014 |
| Assembly Type | 6-Speed Powershift (WG 100 Series) |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Housing Material | Cast Iron (GGG-40) |
| OEM Reference | ZF 6 WG 100(500) |
| Max Input Torque | 500 Nm |
| Hydraulic Fluid Capacity | 12.5 liters (approx.) |
Compatibility
This ZF 4651.006.014 assembly is specifically engineered for the WG 100 series, including the 6 WG 100(500) variant. It is also compatible with the WG 180 and WG 200 series transmissions when used with the appropriate adapter housings. For proper installation, ensure the 4651301029: HOUSING and 4651301024: HOUSING are inspected for cracks. Always replace the 0634303928: O-RING during reassembly to prevent fluid bypass. This unit does not fit the WG 120 or WG 150 series without significant modification.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101007 | TRANSMISSION HOUSING | Main structural casing for gear and shaft support |
| 4651301029 | HOUSING | Rear adapter housing for PTO or output flange |
| 0634303928 | O-RING | Seals hydraulic passages between housing sections |
| 4651301024 | HOUSING | Front clutch housing for torque converter interface |
| 4651203002 | SCREEN SHEET | Fine mesh filter for hydraulic return line |
| 4651303005 | SCREEN SHEET | Coarse mesh filter for suction line protection |
| 0636101032 | CAP SCREW | High-tensile bolt for housing flange fastening |
| 0630361028 | SEALING CAP | Plugs unused hydraulic ports to prevent contamination |
| 4475280060 | SCREW PLUG | Threaded plug for drain or test points |
| 0634303312 | O-RING | Seals the screw plug and cap screw interfaces |
