Overview
This ZF 4656.054.129 4 WG 160 Powershift Transmission Assembly is a complete, ready-to-install unit designed for heavy-duty industrial and agricultural machinery. As the core of the WG 160 series, this assembly integrates the main gear sets, clutch packs, and hydraulic control system to deliver smooth, reliable power shifting under load. The SKU 4656.054.129 is a direct OEM replacement, ensuring precise fitment and performance restoration for your ZF transmission. When rebuilding or replacing a worn unit, this assembly works in concert with the TRANSMISSION HOUSING to form the structural backbone of the drivetrain.
Symptoms of Failure
- Erratic or delayed gear engagement: When the assembly wears internally, you may experience hesitation or harsh shifting between forward and reverse gears, often accompanied by a grinding noise.
- Hydraulic fluid contamination: Debris from worn clutches or seals can cause dark, burnt-smelling transmission oil, leading to clogged filters and reduced shift pressure.
- Oil leaks around the bell housing: Cracks or seal failures in the main assembly can result in visible drips of ATF fluid, particularly near the HOUS.FRONT SECT interface.
- Loss of power under load: Slipping clutches inside the assembly cause the engine to rev without proportional vehicle movement, especially when climbing grades or hauling heavy loads.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4656.054.129 |
| Assembly Type | Complete Powershift Transmission Unit |
| Weight (approx.) | 185 kg (408 lbs) |
| Dimensions (L x W x H) | 720 x 480 x 420 mm |
| Housing Material | High-strength cast iron alloy |
| OEM Reference | ZF 4 WG 160 |
| Related Fastener | CAP SCREW (0636100817) |
| Related Fastener | CAP SCREW (0636100803) |
Compatibility
This complete unit is engineered for the ZF WG 160 series transmissions, commonly found in telehandlers, forklifts, and wheel loaders. While primarily designed for the 4 WG 160 model, it is also compatible with the WG 180 and WG 200 series when used with the appropriate adapter components. The assembly integrates directly with the HOUSING REAR PART and the HOUSING REAR SECTION to complete the drivetrain enclosure. Always verify your transmission model tag before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101058 | TRANSMISSION HOUSING | Main structural casing for gear and clutch assembly |
| 4656201075 | HOUS.FRONT SECT | Front section housing for input shaft and pump drive |
| 4656201079 | HOUSING REAR PART | Rear housing component supporting output shaft bearings |
| 4656298051 | HOUSING REAR SECTION | Rear section cover for final drive access |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing mating surfaces |
| 4656301148 | FIXING PLATE | Retaining plate for clutch pack assembly |
| 0636100817 | CAP SCREW | M12 fastener for housing bolt-down |
| 4656301016 | SCREEN SHEET | Fine mesh filter for hydraulic oil circuit |
| 4656301017 | SCREEN SHEET | Coarse mesh pre-filter for sump pickup |
| 0636100803 | CAP SCREW | M10 fastener for valve body attachment |
Frequently Asked Questions
Q: Is the 4656.054.129 assembly a direct bolt-in replacement for my ZF 4 WG 160?
A: Yes, this complete unit is a factory-spec replacement for the 4 WG 160 powershift transmission. It includes all internal components and requires no modification for standard applications.
Q: What tools are needed to install this assembly with the housing parts?
A: Installation typically requires a transmission jack, torque wrench, and a set of metric sockets. You will need the CAP SCREW (0636100817) and CAP SCREW (0636100803) to secure the housing sections.
Q: Can I use this assembly in a WG 180 or WG 200 transmission?
A: It is physically compatible with WG 180 and WG 200 series housings, but you must also replace the SCREEN SHEET (4656301016) and SCREEN SHEET (4656301017) to match the oil flow requirements of those models.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
