Overview
The ZF 4660.001.018 WG 92 Powershift Transmission Assembly is a complete, fully assembled unit engineered for heavy-duty off-highway machinery. As a core component of the WG 92 series, this assembly integrates the main gear train, clutch packs, and hydraulic control system into a single, ready-to-install package. The SKU 4660.001.018 is specifically designed to replace worn or failed assemblies in articulated dump trucks, wheel loaders, and graders, ensuring seamless power transfer and reliable operation under extreme loads. This unit sits at the heart of the driveline, converting engine torque into controlled forward and reverse motion through its advanced powershift technology.
Symptoms of Failure
When the ZF 4660.001.018 WG 92 assembly begins to degrade, operators often notice distinct performance issues. Delayed or harsh shifting between forward and reverse gears is a primary indicator, often caused by worn clutch discs or degraded seals within the unit. Transmission fluid leaks around the housing or output shaft are common, signaling compromised gaskets or cracked casings. Unusual whining or grinding noises during operation suggest bearing wear or gear tooth damage inside the assembly. Additionally, loss of power or slipping under load points to internal hydraulic pressure loss, requiring immediate attention to prevent total driveline failure.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4660.001.018 |
| Series | WG 92 |
| Assembly Type | Complete Powershift Transmission Unit |
| Estimated Weight | 185 kg (408 lbs) |
| Housing Material | High-Strength Cast Iron |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 410 mm |
| OEM Reference | ZF 4660.001.018 |
| Fluid Capacity | Approx. 22 liters |
| Max Input Torque | 1,200 Nm |
Compatibility
This complete assembly is primarily compatible with ZF WG 92 series transmissions, including models such as the WG 92, WG 120, WG 150, and WG 180. It is also suitable for select WG 200 and WG 220 variants when used in specific OEM applications. Always verify your transmission model and serial number against the ZF parts catalog to ensure proper fitment. This unit is a direct replacement for earlier WG 92 assemblies and is commonly found in Volvo, Case, and Terex equipment.
During installation, several companion parts are critical for a successful rebuild. The 4660101012: TRANSMISSION HOUSING provides the structural foundation for the entire assembly, while the 4660301020: HOUSING encloses the clutch packs and valve body. Small but vital components like the 0631306174: CYLINDRICAL PIN ensure precise alignment of gear shafts, and the 0769123894: TYPE PLATE provides essential identification for service history.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4660101012 | TRANSMISSION HOUSING | Main structural casing for the transmission |
| 4660301020 | HOUSING | Encloses clutch and valve components |
| 0631306174 | CYLINDRICAL PIN | Aligns shafts and gears during assembly |
| 0769123894 | TYPE PLATE | Identification plate for transmission model |
| 4660221012 | SUCTION TUBE | Transmits fluid from sump to pump |
| 0634100317 | O-RING | Seals fluid connections |
| 0636103273 | CAP SCREW | Secures housing and covers |
| 0750100022 | SCREW PLUG | Closes fluid ports and drain holes |
| 4660101804 | TRANSMISSION HOUSING | Alternative housing variant for WG 92 |
| 4660301008 | HOUSING | Secondary housing for gear train support |
