Overview
The ZF 4657.056.145 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully integrated, factory-spec replacement for heavy-duty powershift drivelines. This complete assembly serves as the central torque and speed modulation hub within the WG 210 series, managing clutch engagement and gear ratio shifts under high-load conditions. The SKU 4657.056.145 designates a fully assembled unit, including the internal planetary gear sets, clutch packs, and hydraulic valve body. When installed, it mates directly to the 4657101080: TRANSMISSION HOUSING and is secured by the 4657201167: HOUS.FRONT SECT to form the primary structural envelope. This assembly is critical for maintaining precise power delivery in construction, mining, and agricultural machinery.
Symptoms of Failure
- Erratic gear engagement or slipping under load: Worn internal clutch discs or damaged seals within the 4657.056.145 cause delayed shifts or complete loss of drive torque, especially when climbing grades.
- Internal hydraulic pressure loss: Cracks in the assembly housing or degraded O-rings lead to low line pressure, resulting in soft shifts and transmission overheating.
- Metallic debris in transmission fluid: Advanced wear of planetary gears or thrust bearings produces fine metal particles, often accompanied by a whining noise from the gear train.
- Oil leaks at the housing interface: Separation between the assembly and the 4657201171: HOUSING REAR PART or 4657298103: HOUSING REAR SECTION creates visible fluid trails, indicating a compromised seal.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 4657.056.145 |
| Assembly Type | Complete Powershift Unit (6 WG 210) |
| Dry Weight (estimated) | 185 kg (408 lbs) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Primary Material | High-strength cast iron / alloy steel |
| OEM Reference | ZF 4657.056.145 |
| Fastener Torque Spec (housing bolts) | 120 Nm (refer to 0636100801: CAP SCREW and 0636100803: CAP SCREW) |
| Alignment Pin Spec | 0631306816: CYLINDRICAL PIN |
| Retention Plate | 4656301148: FIXING PLATE |
| Filter Media | 4657301034: SCREEN SHEET / 4657301035: SCREEN SHEET |
Compatibility
This complete unit is engineered specifically for the ZF WG 210 series powershift transmissions. It is directly compatible with the following ZF models that share the same planetary and clutch architecture: WG 180, WG 200, and WG 210 (all variants). The assembly also fits select WG 160 and WG 250 chassis when paired with the correct TRANSMISSION HOUSING and HOUS.FRONT SECT. Always verify the rear housing configuration—either the HOUSING REAR PART or HOUSING REAR SECTION—to ensure proper sealing and alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101080 | TRANSMISSION HOUSING | Main structural casing for the gear train |
| 4657201167 | HOUS.FRONT SECT | Front section housing for input shaft support |
| 4657201171 | HOUSING REAR PART | Rear housing component for output bearing retention |
| 4657298103 | HOUSING REAR SECTION | Alternate rear section for extended output configurations |
| 0631306816 | CYLINDRICAL PIN | Precision alignment pin for housing doweling |
| 0636100801 | CAP SCREW | M12 bolt for main housing fastening |
| 0636100803 | CAP SCREW | M14 bolt for rear section attachment |
| 4656301148 | FIXING PLATE | Retention plate for clutch pack preload |
| 4657301034 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter for sump return |
