Overview
The ZF 4657.055.146 5 WG 210 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. This assembly integrates the core gear train, clutch packs, and hydraulic control components into a single, ready-to-install package. As a direct replacement for the WG 210 series, the SKU 4657.055.146 ensures precise gear engagement under load, making it essential for wheel loaders, dozers, and industrial vehicles. The unit sits at the heart of the driveline, transferring engine torque through five forward speeds. For proper sealing and structural integrity, this assembly must be paired with a robust TRANSMISSION HOUSING to contain lubrication and support internal components.
Symptoms of Failure
- Delayed or harsh gear engagement: When the internal clutch packs or hydraulic circuits wear, operators experience a noticeable lag or jarring shift between forward and reverse gears.
- Torque converter shudder under load: A vibration or shudder during acceleration indicates internal wear within the powershift assembly, often linked to failing seals or worn friction discs.
- External oil leaks at housing joints: Cracks or warpage in the main casing allow transmission fluid to escape, leading to low pressure and eventual slipping. Inspect the HOUS.FRONT SECT and HOUSING REAR PART for signs of seepage.
- Loss of power in higher gears: A worn assembly cannot maintain line pressure, causing the transmission to slip out of 4th or 5th gear under moderate load.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4657.055.146 |
| Series | WG 210 (5-speed) |
| 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 |
| Clutch Type | Multi-disc, oil-cooled |
| OEM Reference | ZF 5 WG 210 |
Compatibility
This complete unit is engineered specifically for the ZF WG 210 series powershift transmissions. It is a direct fit for models including the WG180, WG200, and WG210, commonly found in construction equipment from Caterpillar, Volvo, and Case. The assembly also integrates with the HOUSING REAR SECTION to complete the driveline enclosure. Always verify the serial number of your existing transmission to confirm interchangeability with the 4657.055.146.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear support |
| 4657201166 | HOUS.FRONT SECT | Front section housing input shaft |
| 4657201170 | HOUSING REAR PART | Rear casing for output shaft support |
| 4657298102 | HOUSING REAR SECTION | Extended rear housing for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0636100801 | CAP SCREW | Fastener for housing joints |
| 4656301148 | FIXING PLATE | Secures clutch pack retainers |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0636100803 | CAP SCREW | High-tensile bolt for bell housing |
