Overview
This ZF 4656.054.075 4 WG 160 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. As the core hydraulic-mechanical assembly in the WG 160 series, it integrates the torque converter, clutch packs, and planetary gear sets into a single ready-to-install package. The SKU 4656.054.075 replaces worn or failed assemblies, restoring full power flow and shift quality in loaders, graders, and industrial tractors. It mounts directly to the engine bellhousing and mates with the TRANSMISSION HOUSING to form the main structural shell, while the HOUS.FRONT SECT and HOUSING REAR PART enclose the rotating components.
Symptoms of Failure
- Erratic or delayed engagement: When the internal clutch piston seals degrade, the transmission hesitates before engaging forward or reverse, often accompanied by a harsh bump.
- Torque converter shudder under load: Worn stator bearings or damaged turbine splines cause a vibration or shudder during acceleration, particularly in 2nd and 3rd gear.
- External oil seepage at housing joints: Cracks or gasket failure in the assembly allow ATF to weep from the mating surfaces, leading to low fluid levels and eventual overheating.
- Loss of power in higher gears: Internal seal ring wear in the clutch drum reduces hydraulic pressure, causing the transmission to slip or fail to hold 4th gear under heavy load.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4656.054.075 |
| Assembly Type | Complete Powershift Unit (4 WG 160) |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Housing Material | High-strength cast iron (GGG-40) |
| Max Input Torque | 1,600 Nm |
| OEM Reference | ZF 4 WG 160 |
Compatibility
This complete unit is specifically engineered for the ZF WG 160 series powershift transmissions. It is directly compatible with WG 160 models used in construction and agricultural machinery from the early 2000s onward. While the assembly is not interchangeable with the larger WG 180 or WG 200 series without significant modifications, the internal components share common architecture. For rebuilds, the HOUSING REAR PART (SKU 4472239179) is a direct fit for late-model WG 160 units.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101031 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4656201075 | HOUS.FRONT SECT | Front section enclosing torque converter |
| 4656201036 | HOUSING REAR PART | Rear housing supporting output shaft |
| 4472239179 | HOUSING REAR PART | Alternate rear housing (late model) |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 4656301148 | FIXING PLATE | Retains clutch drum to shaft |
| 0636100817 | CAP SCREW | M10 fastener for housing bolts |
| 4656301016 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4656301017 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | M8 fastener for valve body |
Frequently Asked Questions
Q: Can I install this 4656.054.075 assembly without replacing the housing sections?
A: It is strongly recommended to inspect and replace the TRANSMISSION HOUSING and both front/rear housings if they show cracks or wear, as misalignment will damage the new assembly.
Q: What is the typical service life of this complete unit?
A: Under normal operating conditions with proper fluid maintenance, the ZF 4 WG 160 assembly lasts 8,000–12,000 hours before internal seal and clutch wear require overhaul.
Q: Does this part include the torque converter?
A: Yes, the 4656.054.075 is a complete unit that includes the torque converter, clutch packs, and all internal rotating assemblies, ready for direct installation.
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Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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