Overview
The ZF 2093.122.013 PUMP DRIVE is a critical hydraulic component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part serves as the primary interface between the transmission’s internal gearing and the external hydraulic pump, ensuring precise oil flow for clutch actuation and lubrication. The SKU 2093.122.013 mounts directly onto the 2093101016: HOUSING, where it transfers rotational force from the transmission countershaft to drive the pump. Without this component, the transmission cannot maintain hydraulic pressure, making it essential for reliable operation in heavy-duty industrial applications.
Symptoms of Failure
- Intermittent gear slipping under load: When the pump drive wears, hydraulic pressure drops, causing the transmission to slip during high-torque operations.
- Oil leaks around the pump mounting flange: Worn seals on the 2093.122.013 allow transmission fluid to escape, often pooling near the 2093301030: TRANSMISSION HOUSING.
- Erratic shifting or delayed engagement: Reduced pump output leads to slow clutch pack fill times, resulting in harsh or unpredictable gear changes.
- Whining noise from the pump area: Bearing wear inside the pump drive creates a distinct metallic sound that intensifies with engine RPM.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2093.122.013 |
| Material | Hardened alloy steel with nitrided surface |
| Weight | 2.4 kg (5.3 lbs) |
| Overall Length | 185 mm |
| Spline Diameter | 28 mm (input), 22 mm (output) |
| OEM Reference | ZF 2093.122.013 |
| Torque Capacity | 320 Nm |
Compatibility
This pump drive is specifically designed for ZF WG-series transmissions. Verified compatible models include WG100, WG130, and WG131. It may also fit WG180 and WG200 variants when used with the correct 0631311009: GROOVED STUD and 0730365092: TYPE PLATE for proper alignment. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093101016 | HOUSING | Encloses the pump drive and supports bearing loads |
| 2093301030 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 0730365092 | TYPE PLATE | Identification plate with model and serial number |
| 0631311009 | GROOVED STUD | Locating pin for pump drive alignment |
| 4475280013 | SCREW PLUG | Seals hydraulic passages in the housing |
| 2093301021 | GASKET | Prevents oil leakage between mating surfaces |
| 0636302061 | SCREW PLUG | Drain or fill plug for transmission oil |
| 0634801215 | SEALING RING | Creates a leak-proof joint on threaded connections |
| 4475280039 | SCREW PLUG | High-pressure port plug for hydraulic circuits |
| 0634303144 | O-RING | Static seal for pump drive flange |
Frequently Asked Questions
Q: Can I install the 2093.122.013 pump drive without replacing the gasket?
A: No. Always replace the 2093301021: GASKET during installation to prevent oil leaks. Reusing old gaskets often leads to premature failure.
Q: What torque should I use for the mounting bolts?
A: Tighten the bolts securing the pump drive to 45 Nm (33 ft-lbs). Use a new 0634303144: O-RING on the hydraulic port to ensure a proper seal.
Q: How do I identify a genuine ZF 2093.122.013 versus a counterfeit?
A: Genuine parts have a laser-etched part number and the ZF logo on the spline shaft. Check the 0730365092: TYPE PLATE on your transmission for matching OEM specifications.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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