Overview
The ZF 4656.054.079 4 WG 160 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway machinery. This assembly serves as the central power distribution hub, managing torque flow and gear selection within the WG 160 series. As a complete unit, it integrates the main housing, clutch packs, and hydraulic control circuits to deliver reliable, shift-on-the-fly performance. The SKU 4656.054.079 is a direct OEM replacement, ensuring precise fitment and original ZF engineering standards. This assembly sits between the engine and the driveline, converting rotational power into usable traction for loaders, graders, and industrial vehicles.
Symptoms of Failure
When the ZF 4656.054.079 assembly begins to fail, operators often notice delayed or harsh gear engagement during power shifts, a classic sign of internal wear. Another common symptom is low hydraulic pressure or erratic shifting, which can stem from degraded seals or worn valve bodies within the unit. External oil leaks around the housing seams are frequent, especially if the TRANSMISSION HOUSING or HOUS.FRONT SECT have developed cracks or gasket failures. Finally, unusual whining or grinding noises from the transmission indicate bearing fatigue or gear damage, requiring immediate attention to avoid catastrophic failure.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4656.054.079 |
| Assembly Type | Complete Powershift Transmission Unit |
| Series | WG 160 |
| Estimated Weight | 185 kg (408 lbs) |
| Housing Material | High-Strength Cast Iron |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| OEM Reference | ZF 4656.054.079 |
| Fluid Capacity | 12.5 Liters (approx.) |
Compatibility
This complete unit is engineered specifically for the ZF WG 160 transmission series. It is also compatible with select variants in the WG 180 and WG 200 series that share the same mounting pattern and hydraulic architecture. For proper installation, ensure the HOUSING REAR PART (4656201034) and the HOUSING REAR PART (4472239177) are correctly aligned. This assembly is commonly used in ZF 4WG-160, 4WG-180, and 4WG-200 powershift systems found in construction and agricultural equipment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101032 | TRANSMISSION HOUSING | Main structural casing for gear and shaft support |
| 4656201075 | HOUS.FRONT SECT | Front section housing for input shaft and clutch |
| 4656201034 | HOUSING REAR PART | Rear housing section for output shaft support |
| 4472239177 | HOUSING REAR PART | Alternate rear housing for specific WG variants |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100817 | CAP SCREW | Fastener for securing housing sections |
| 4656301016 | SCREEN SHEET | Filter screen for hydraulic fluid intake |
| 4656301017 | SCREEN SHEET | Secondary filter screen for oil return line |
| 0636100803 | CAP SCREW | Bolt for mounting clutch pack assemblies |
| 4681301040 | OIL FEED.HOUSG. | Oil feed housing for lubrication circuit |
Frequently Asked Questions
Q: Is the ZF 4656.054.079 a direct bolt-in replacement for my WG 160 transmission?
A: Yes, this complete unit is designed as a direct OEM replacement for the WG 160 series. It includes all internal components and requires no modifications for standard applications.
Q: What causes premature failure of this transmission assembly?
A: Common causes include contaminated hydraulic fluid, low oil levels, and overheating. Regular inspection of the SCREEN SHEET (4656301016) and OIL FEED.HOUSG. (4681301040) can prevent many issues.
Q: Can I install this unit without replacing the housing sections?
A: It is strongly recommended to inspect and, if necessary, replace the HOUS.FRONT SECT and HOUSING REAR PART to ensure proper sealing and alignment during reassembly.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
