Overview
The ZF 4657.056.182 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully assembled, drop-in replacement for heavy-duty powershift applications. This SKU 4657.056.182 integrates the entire gear train, clutch packs, and hydraulic control system within a single housing, serving as the core torque-converter-to-output-shaft assembly for the WG 210 series. Designed for demanding off-highway machinery, this complete unit eliminates the need for piecemeal rebuilding, ensuring immediate operational reliability. The assembly interfaces directly with the TRANSMISSION HOUSING to form the structural backbone of the drivetrain.
Symptoms of Failure
- Erratic gear engagement under load: When the complete unit wears, operators often report delayed or harsh shifting, particularly when transitioning between forward and reverse in loaders or graders.
- Internal hydraulic pressure loss: A failing assembly can cause gradual power fade, where the machine struggles to maintain speed on inclines due to slipping clutch packs within the unit.
- Contaminated transmission fluid with metallic debris: Worn bearings or planetary gears inside the assembly shed particles, leading to a gritty texture in the oil and reduced lubrication efficiency.
- Audible whining or grinding from the bell housing area: Distinct noise during deceleration or neutral idle often indicates internal gear train wear requiring immediate replacement of the complete unit.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.056.182 |
| Assembly Type | Complete Powershift Unit (6-speed) |
| Series | WG 210 |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Primary Material | Cast Iron Housing with Steel Gears |
| OEM Reference | ZF 4657.056.182 |
| Related Fastener | CAP SCREW (M16 x 1.5) |
| Related Fastener | CAP SCREW (M12 x 1.75) |
| Sealing Component | SCREEN SHEET (Fine) |
| Sealing Component | SCREEN SHEET (Coarse) |
Compatibility
This complete unit is engineered specifically for the ZF WG 210 series transmissions. It is also mechanically compatible with the WG 180 and WG 200 series when used in conjunction with the correct HOUS.FRONT SECT adapter. The assembly directly replaces units in WG 211 and WG 212 variants found in telehandlers and wheel loaders. For proper installation, ensure the HOUSING REAR PART and HOUSING REAR SECTION are inspected for wear. A CYLINDRICAL PIN is required for alignment during reassembly, and a FIXING PLATE secures the output flange.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section adapter for torque converter |
| 4657201170 | HOUSING REAR PART | Rear casing for output shaft support |
| 4657298102 | HOUSING REAR SECTION | Extended rear section for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0636100801 | CAP SCREW | M16 fastener for main housing bolts |
| 4656301148 | FIXING PLATE | Locks output flange to shaft |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for oil sump |
| 0636100803 | CAP SCREW | M12 fastener for accessory brackets |
