Overview
This ZF 4656.054.034 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, planetary gear sets, and clutch packs into a single, ready-to-install package. The SKU 4656.054.034 serves as the direct replacement for worn-out transmissions in wheel loaders, dozers, and graders, ensuring seamless power delivery under extreme loads. This complete unit eliminates the need for piecemeal rebuilding, reducing downtime and installation complexity.
Symptoms of Failure
- Delayed or harsh engagement: When the transmission hesitates before moving or slams into gear, internal clutch pack wear or hydraulic pressure loss is likely. This symptom often appears as a “ZF transmission slipping under load” condition.
- External oil leaks at housing seams: Visible fluid weeping around the TRANSMISSION HOUSING or the HOUS.FRONT SECT indicates gasket failure or housing cracks, leading to low oil levels and eventual gear starvation.
- Erratic shifting or gear hunting: The transmission randomly jumps between gears or fails to hold a selected gear. This points to worn valve bodies or damaged planetary carriers within the assembly.
- Unusual whining or grinding noises: Metallic sounds during operation, especially in lower gears, signal bearing fatigue or gear tooth damage inside the unit.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4656.054.034 |
| Assembly Type | Complete Powershift Transmission |
| Series | WG 160 |
| Dry Weight (approx.) | 385 kg (849 lbs) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Housing Material | High-strength cast iron |
| OEM Reference | ZF 4 WG 160 |
| Torque Converter Type | Single-stage, multi-element |
Compatibility
This complete unit is engineered for the ZF WG 160 series but shares core architecture with larger models. It is directly compatible with the WG 180 and WG 200 series transmissions when used as a direct swap in machines originally equipped with a 4-speed powershift. The assembly also fits select applications in the WG 150 series with minor adapter modifications. For proper installation, always verify the bell housing pattern against your existing HOUSING REAR PART and the HOUSING REAR PART (alternate variant) to ensure correct alignment with the engine flywheel housing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101031 | TRANSMISSION HOUSING | Main structural casing for gear and shaft support |
| 4656201075 | HOUS.FRONT SECT | Front section housing the torque converter and pump drive |
| 4656201036 | HOUSING REAR PART | Rear casing enclosing output shaft and parking brake |
| 4472239179 | HOUSING REAR PART | Alternate rear housing variant for specific gear ratios |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for precise housing mating |
| 4656301148 | FIXING PLATE | Retains clutch pack springs in position |
| 0636100817 | CAP SCREW | High-tensile fastener for housing bolts |
| 4656301016 | SCREEN SHEET | Fine mesh filter for hydraulic circuit protection |
| 4656301017 | SCREEN SHEET | Coarse mesh pre-filter for sump return line |
| 0636100803 | CAP SCREW | M12 bolt for valve body mounting |
Frequently Asked Questions
Q: Is the 4656.054.034 a direct bolt-in replacement for my existing WG 160 transmission?
A: Yes, this complete unit is a factory-spec replacement for the ZF 4 WG 160. Ensure your machine uses the same bell housing pattern; verify with your HOUS.FRONT SECT for compatibility.
Q: What is the typical lifespan of this assembly before requiring a rebuild?
A: Under normal operating conditions with proper maintenance, this powershift transmission can last 8,000 to 12,000 hours. Harsh environments or heavy loading may reduce this interval.
Q: Can I use this unit with a different rear housing from another series?
A: We recommend using the matched HOUSING REAR PART or its variant 4472239179 to maintain correct output shaft alignment and oil gallery routing.
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Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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