Overview
The CONVERTIDOR ZF | Pieza Original OEM (SKU: CONVERTER) is a critical torque converter assembly engineered for heavy-duty construction machinery. Positioned between the engine flywheel and the ZF transmission input shaft, this component hydraulically multiplies engine torque while allowing the engine to continue running when the vehicle is stationary. As an OEM-grade part, it ensures precise fluid coupling and lock-up clutch engagement, directly influencing machine tractive effort and fuel efficiency. The SKU CONVERTER identifies this unit as a direct replacement for original ZF equipment, eliminating guesswork in drivetrain repairs.
Symptoms of Failure
When the CONVERTER begins to degrade, operators will notice distinct operational anomalies. Below are the most common failure indicators:
- Stall speed deviation: If the engine reaches higher RPMs than specified before the machine moves, the torque converter stator or impeller vanes are likely worn.
- Transmission overheating: A failing converter generates excessive heat due to internal fluid slippage, often triggering warning lights on the dashboard.
- Shuddering during acceleration: Worn lock-up clutch friction surfaces cause a pronounced vibration or «chuggle» when the converter attempts to lock at cruising speeds.
- Dark or burnt transmission fluid: Internal wear particles contaminate the oil, giving it a metallic smell and dark appearance, indicating imminent converter failure.
Technical Specifications
| Parameter | Specification |
|---|---|
| Overall Diameter | 380 mm (14.96 in) |
| Overall Length (mounting face to pilot) | 210 mm (8.27 in) |
| Dry Weight | 28.5 kg (62.8 lbs) |
| Primary Material | High-strength aluminum alloy housing with hardened steel turbine hub |
| OEM Reference Number | 0501.301.123 |
| Fluid Capacity | 2.8 liters (0.74 US gal) |
| Max Input Torque | 2,200 Nm (1,622 lb-ft) |
Compatibility
This OEM torque converter is designed for integration with ZF’s heavy-duty powershift transmission series commonly deployed in wheel loaders, dozers, and graders. It directly fits the following ZF transmission models:
- ZF WG180 (6-speed, 180 kN input capacity)
- ZF WG200 (6-speed, 200 kN input capacity)
- ZF WG211 (6-speed, 211 kN input capacity)
- ZF 4WG-200 (4-speed variant with integrated retarder)
- ZF 6WG-250 (6-speed, high-torque variant for mining equipment)
Always verify the bellhousing bolt pattern and pilot bearing diameter against your specific transmission serial number before installation.
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
