Overview
The ZF 4660.013.009 WG 98 TC Powershift Transmission Assembly represents a complete, ready-to-install unit engineered for demanding industrial drivetrains. This assembly integrates the torque converter and planetary gear sets into a single robust package, serving as the core power transfer module in ZF’s WG 98 series. The SKU 4660.013.009 is designed to replace worn or failed assemblies, restoring full hydraulic clutch modulation and shift quality. When installed, it interfaces directly with the 4660101020: TRANSMISSION HOUSING and the 4660301056: HOUSING II to form the sealed transmission casing. Precision alignment is ensured by the 0631306174: CYLINDRICAL PIN, while the 0769123894: TYPE PLATE provides critical identification for service history.
Symptoms of Failure
- Delayed or harsh engagement when shifting from neutral to forward: A worn WG 98 TC assembly often causes noticeable hesitation or a jarring clunk during directional changes, indicating internal clutch pack wear.
- Progressive oil leaks around the torque converter housing: Deteriorated seals within the 4660.013.009 unit lead to fluid seepage, visible as drips near the bell housing, which reduces hydraulic pressure.
- Transmission overheating under moderate load: A failing assembly generates excessive heat due to internal slippage, triggering warning lights or burnt fluid odors during operation.
- Loss of power transfer in higher gears: Worn planetary gears or damaged clutches cause the transmission to slip or fail to hold gear ratios, especially under load in WG 98 applications.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4660.013.009 |
| Assembly Type | WG 98 TC Powershift (Complete Unit) |
| Weight (approx.) | 145 kg (320 lbs) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 410 mm |
| Housing Material | Cast Iron (GGG-40) |
| Torque Converter Diameter | 340 mm |
| OEM Reference | ZF 4660.013.009 |
| Max Input Torque | 1,200 Nm |
| Max Input Speed | 3,000 RPM |
Compatibility
This complete unit is specifically engineered for the ZF WG 98 series of powershift transmissions. It is a direct fit for models including the WG180, WG200, and WG210, which are commonly deployed in wheel loaders, forklifts, and industrial tractors. The 4660.013.009 assembly also serves as a replacement for earlier WG 98 variants, provided the transmission housing and hydraulic pump interface match. Always verify the bell housing pattern and input shaft spline count against your existing unit before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4660101020 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4660301056 | HOUSING II | Rear housing section for clutch packs |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0769123894 | TYPE PLATE | Identification plate with serial number |
| 0750100022 | SCREW PLUG | Seals fluid drain/fill ports |
| 4660221031 | SUCTION TUBE | Oil pickup from pan to pump |
| 0634100317 | O-RING | Seals suction tube connection |
| 0636103273 | CAP SCREW | Fastens housing sections together |
| 0634306311 | O-RING | Seals cap screw bore |
| 4660321029 | FIXING PLATE | Secures valve body to housing |
