ZF 4657.054.106 4 WG 210 Powershift Transmission Assembly | Complete Unit

Overview

This ZF 4657.054.106 4 WG 210 Powershift Transmission Assembly is a complete, ready-to-install unit designed for heavy-duty industrial and construction machinery. As the core power transfer module in the WG 210 series, this assembly integrates the torque converter, planetary gear sets, and clutch packs into a single sealed housing. The SKU 4657.054.106 represents a fully assembled unit, ensuring precise gear engagement under high load conditions. It sits directly between the engine flywheel and the final drive, converting rotational power into controlled, shiftable torque for loaders, graders, and material handlers.

Symptoms of Failure

• Delayed or harsh gear engagement: When the internal clutch packs or valve body wear, operators experience a noticeable lag or jarring shift between forward and reverse gears, often accompanied by a loss of tractive effort.
• Internal hydraulic oil leaks: Worn seals or cracked housing sections cause transmission fluid to pool around the bell housing or drip from the main case, leading to low pressure and eventual gear slipping.
• Unusual whining or grinding noises: Damaged planetary gears or bearing failure within the assembly produce a high-pitched whine or metallic grinding sound during acceleration, indicating imminent internal component failure.
• Overheating under normal load: A failing torque converter or blocked oil passages cause the transmission to run excessively hot, triggering warning lights and reducing operational efficiency.

Technical Specifications

Compatibility

This complete assembly is engineered for the ZF WG 210 series, but its core architecture also supports select models in the WG 180 and WG 200 families. It is a direct fit for ZF 4 WG 210 transmissions found in Volvo L120G, Caterpillar 950H, and Komatsu WA380-6 wheel loaders. The unit is also backward-compatible with earlier WG 200 variants when paired with the correct TRANSMISSION HOUSING and front section adapters. For proper installation, always verify the bell housing pattern and input shaft spline count against your existing unit.

When replacing this assembly, technicians commonly inspect and replace the surrounding structural components. The HOUS.FRONT SECT must be checked for cracks, while the HOUSING REAR PART should be torqued to factory specifications. Additionally, the HOUSING REAR SECTION often requires replacement if the output shaft bearing bore is worn.

Related Components

Frequently Asked Questions

Q: Can this 4657.054.106 assembly be installed without removing the entire transmission from the machine?
A: No. This is a complete unit that requires full removal of the old transmission. You must disconnect the driveline, hydraulic lines, and electronic harness before swapping the assembly. Always support the unit with a transmission jack rated for 200 kg minimum.

Q: What is the recommended break-in procedure after installing this WG 210 assembly?
A: After installation, run the transmission at low idle for 10 minutes to circulate fluid. Then perform 20 slow forward-reverse cycles under no load. Finally, operate at 50% load for 1 hour before returning to full duty. This ensures proper clutch pack seating.

Q: Does this unit include the torque converter or is it sold separately?
A: The 4657.054.106 is a complete powershift assembly that includes the torque converter, all planetary gear sets, and clutch packs. It is ready to bolt in, though you must reuse your original flex plate and flywheel adapter.