Overview
The ZF 4660.013.019 WG 98 TC Powershift Transmission Assembly represents a complete, drop-in replacement unit engineered for heavy-duty off-highway machinery. This fully assembled transmission, identified by SKU 4660.013.019, integrates the torque converter, planetary gear sets, and hydraulic control system into a single, pre-tested package. Designed for the WG 98 Series, this assembly serves as the core power transfer component, converting engine torque into controlled, multi-speed output for loaders, graders, and industrial vehicles. The unit is precision-machined to interface directly with the 4660101019: TRANSMISSION HOUSING and the 4660301056: HOUSING II, ensuring a sealed, vibration-resistant fit within the drivetrain.
Symptoms of Failure
When the ZF 4660.013.019 assembly begins to degrade, operators typically notice distinct performance issues. Watch for these specific failure indicators:
- Delayed or harsh gear engagement: A noticeable lag when shifting from neutral to forward or reverse, often accompanied by a jarring clunk, indicates internal clutch pack wear or hydraulic pressure loss within the assembly.
- Transmission fluid overheating: If the unit runs excessively hot during normal operation, it suggests torque converter stator failure or blocked internal oil passages, leading to reduced lubrication and potential seizure.
- Oil leaks at the bell housing or output flange: External seepage around the main case seams or output shaft seal points points to degraded gaskets or cracked housing interfaces, often requiring replacement of the complete unit.
- Intermittent power loss under load: The machine may momentarily lose drive power when climbing or pushing, signaling worn planetary gears or a failing torque converter lock-up clutch inside the assembly.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4660.013.019 |
| Assembly Type | WG 98 TC Powershift Transmission (Complete Unit) |
| Dry Weight (approx.) | 285 kg (628 lbs) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 550 mm |
| Housing Material | High-grade cast iron (GGG-40) |
| OEM Reference | ZF WG 98 Series |
| Torque Converter Type | Single-stage, three-element |
| Max Input Torque | 1,200 Nm |
Compatibility
This complete transmission assembly is specifically engineered for the ZF WG 98 Series, which includes the WG180, WG200, and WG210 models commonly found in compact and mid-size wheel loaders, telescopic handlers, and industrial tractors. The 4660.013.019 unit is a direct replacement for earlier WG 98 variants and is compatible with engines producing up to 180 kW. For proper installation, ensure the 0631306174: CYLINDRICAL PIN is correctly aligned during mounting to prevent misalignment, and verify the 0769123894: TYPE PLATE matches your machine’s serial number for accurate identification.
Related Components
For a complete rebuild or service of the ZF WG 98 assembly, the following parts are frequently required alongside the 4660.013.019 unit:
| Part Number | Name | Function |
|---|---|---|
| 4660101019 | TRANSMISSION HOUSING | Main structural case for gear train |
| 4660301056 | HOUSING II | Rear section housing output shaft |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0769123894 | TYPE PLATE | Identification tag for model specs |
| 0750100022 | SCREW PLUG | Seals oil drain/fill ports |
| 4660221031 | SUCTION TUBE | Oil pickup from pan to pump |
| 0634100317 | O-RING | Seals suction tube connection |
| 0636103273 | CAP SCREW | Fastener for housing bolts |
| 0634306311 | O-RING | Seals cap screw interface |
| 4660321029 | FIXING PLATE | Retains clutch pack assembly |
