Overview
This ZF 4656.054.188 4 WG 160 Powershift Transmission Assembly is a complete unit engineered for heavy-duty off-highway applications. As the core power transfer module in the WG 160 series, it integrates the torque converter, planetary gear sets, and hydraulic control system into a single, ready-to-install package. The SKU 4656.054.188 serves as the direct replacement for worn or failed assemblies, ensuring that your equipment regains full operational torque and shift precision. This assembly sits at the heart of the drivetrain, connecting the engine output directly to the final drive components.
Symptoms of Failure
- Erratic or delayed shifting under load: When the internal clutch packs or valve body wear, the transmission may hesitate or slam into gear, particularly when moving heavy material.
- External oil leaks at housing seams: Cracks or gasket failures in the main casing cause fluid loss, often visible as drips around the bell housing or rear output flange.
- Loss of forward or reverse drive: A complete unit failure can result in the transmission refusing to engage one or more gear ranges, leaving the vehicle immobile.
- Overheating and burnt fluid smell: Internal wear generates excessive friction, raising operating temperatures and degrading the hydraulic fluid, which leads to a distinct burnt odor.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 4656.054.188 |
| Assembly Type | Complete Powershift Transmission |
| Series | WG 160 |
| Estimated Dry Weight | 185 kg (408 lbs) |
| Overall Length (approx.) | 720 mm |
| Overall Width (approx.) | 480 mm |
| Overall Height (approx.) | 520 mm |
| Primary Material | Cast Iron Housing / Steel Gears |
| OEM Reference | ZF 4 WG 160 |
Compatibility
This complete unit is specifically designed for the ZF WG 160 series. It is also mechanically compatible with the WG 180 and WG 200 series when used with the correct adapter plates and torque converters. The assembly shares its mounting pattern and hydraulic interface with earlier WG 150 models, though internal clutch capacities differ. Always verify the bell housing configuration against your specific vehicle model before installation.
Installation Context
When replacing the complete unit, several surrounding components must be inspected and often replaced to ensure a leak-free, durable installation. The TRANSMISSION HOUSING (4656101055) forms the main structural shell and must be free of cracks. The HOUS.FRONT SECT (4656201075) seals the torque converter area, while the HOUSING REAR PART (4656201076) and HOUSING REAR SECTION (4656298047) enclose the output shaft and PTO drive. Using new seals and gaskets with these housings is critical to prevent premature failure.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101055 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4656201075 | HOUS.FRONT SECT | Front section enclosing torque converter |
| 4656201076 | HOUSING REAR PART | Rear housing for output shaft support |
| 4656298047 | HOUSING REAR SECTION | Additional rear section for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 4656301148 | FIXING PLATE | Secures internal clutch pack retainers |
| 0636100817 | CAP SCREW | High-tensile fastener for housing bolts |
| 4656301016 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4656301017 | SCREEN SHEET | Coarse mesh pre-filter for oil pump |
| 0636100803 | CAP SCREW | Fastener for valve body mounting |
Frequently Asked Questions
Q: Is the 4656.054.188 a direct bolt-in replacement for all WG 160 transmissions?
A: Yes, this complete unit is a direct replacement for any ZF 4 WG 160 assembly. However, you must verify the torque converter pilot diameter and bell housing bolt pattern match your engine flywheel housing.
Q: What other parts should I replace when installing this assembly?
A: We strongly recommend replacing all housing sections—specifically the TRANSMISSION HOUSING, HOUS.FRONT SECT, and HOUSING REAR PART—along with all cap screws and screen sheets to prevent contamination.
Q: How do I confirm the correct oil capacity for this unit?
A: The WG 160 assembly requires approximately 22 liters of ZF-approved mineral oil (TE-ML 03 specification). Always fill through the top port and check level with the transmission at operating temperature.
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Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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