Overview
This complete ZF 4656.054.133 4 WG 160 Powershift Transmission Assembly is a fully integrated unit designed for heavy-duty industrial applications. As a core component of the WG 160 series, this assembly manages torque distribution and gear selection under high-load conditions. The SKU 4656.054.133 replaces the entire gear train and clutch pack assembly, ensuring seamless power flow from the engine to the driveline. When installed, this unit works directly with the TRANSMISSION HOUSING to provide structural integrity and alignment for all rotating elements.
Symptoms of Failure
- Delayed engagement or gear slipping under load: When the internal clutch packs or planetary gears wear, operators experience hesitation when shifting between forward and reverse, especially on inclines.
- Erratic shifting and harsh engagement: A failing assembly causes abrupt gear changes, often accompanied by a loud clunking noise during acceleration or deceleration.
- Oil leaks around the bell housing or output flange: Worn seals within the unit allow transmission fluid to escape, leading to low pressure and eventual overheating.
- Loss of power in higher gears: Internal wear reduces hydraulic pressure, causing the transmission to slip out of gear at highway speeds or under heavy payloads.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4656.054.133 |
| Assembly Type | Complete Powershift Unit (4 WG 160) |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 410 mm |
| Housing Material | Cast Iron (GGG-40) |
| OEM Reference | ZF 4 WG 160 |
| Max Input Torque | 1,600 Nm |
| Fluid Capacity | 12.5 liters (ATF Dexron III) |
Compatibility
This assembly is engineered for the ZF WG 160 series, but it also fits select models in the WG 180 and WG 200 families due to shared mounting patterns and shaft diameters. It is commonly used in ZF 4 WG 160, 4 WG 180, and 4 WG 200 transmissions found in construction loaders, forklifts, and agricultural tractors. For proper installation, ensure the HOUS.FRONT SECT and HOUSING REAR PART are free of cracks or warping. Additionally, the HOUSING REAR SECTION must be inspected for wear at the bearing journals before final assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101055 | TRANSMISSION HOUSING | Main structural casing for gear and shaft alignment |
| 4656201075 | HOUS.FRONT SECT | Front section housing input shaft and pump drive |
| 4656201076 | HOUSING REAR PART | Rear housing supporting output shaft and PTO |
| 4656298047 | HOUSING REAR SECTION | End cover with bearing support for final drive |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing dowel positioning |
| 4656301148 | FIXING PLATE | Locking plate for clutch pack retention |
| 0636100817 | CAP SCREW | M12 bolt for housing fastening |
| 4656301016 | SCREEN SHEET | Fine mesh filter for oil return line |
| 4656301017 | SCREEN SHEET | Coarse mesh filter for suction line |
| 0636100803 | CAP SCREW | M10 bolt for valve body attachment |
Frequently Asked Questions
Q: Can this assembly be installed without removing the entire transmission from the vehicle?
A: No. The 4656.054.133 is a complete unit that requires full transmission removal. You must also replace all gaskets and inspect the TRANSMISSION HOUSING for cracks before installation.
Q: What is the typical lifespan of this assembly under normal operating conditions?
A: With proper maintenance and fluid changes every 500 hours, the 4 WG 160 assembly typically lasts 8,000 to 10,000 hours. Heavy shock loads or contamination can reduce this significantly.
Q: Does this part include the valve body or torque converter?
A: No. This is the gear train and clutch pack assembly only. The valve body and torque converter must be ordered separately if needed.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
