Overview
The ZF 4642.309.061 is a precision-engineered OEM genuine component specifically designed for the WG 100, WG 110, and WG 150 series transmissions. This critical part functions as a sealing and alignment element within the transmission’s hydraulic circuit, ensuring proper fluid flow and pressure regulation during gear shifts. The SKU 4642.309.061 is manufactured to ZF’s exacting tolerances, making it essential for maintaining the integrity of the transmission’s internal oil passages. When installed correctly, this component works in concert with the TRANSMISSION HOUSING (4642101109) and the TRANSMISSION HOUSING (4642301205) to create a sealed environment that prevents cross-contamination of hydraulic fluids.
Symptoms of Failure
When the ZF 4642.309.061 begins to wear, operators will notice distinct performance degradation. The most common failure indicators include:
- Oil leaks around the transmission housing: Worn seals allow hydraulic fluid to escape, often visible as drips near the bell housing or oil pan area.
- Delayed or harsh gear engagement: Loss of hydraulic pressure causes sluggish shifts or sudden clunking when moving from neutral to drive.
- Transmission overheating: Reduced fluid circulation leads to elevated operating temperatures, triggering warning lights on the dashboard.
- Intermittent gear slipping under load: The transmission may momentarily lose power delivery during acceleration or hill climbing.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4642.309.061 |
| Material | High-grade aluminum alloy with nitrile rubber sealing elements |
| Weight | 0.85 kg (1.87 lbs) |
| Outer Diameter | 142 mm |
| Inner Diameter | 98 mm |
| Height | 32 mm |
| Operating Temperature Range | -40°C to +120°C |
| OEM Reference | ZF Friedrichshafen AG |
Compatibility
This genuine ZF part is engineered for the WG 100, WG 110, and WG 150 transmission families. It is also compatible with select variants of the WG 180 and WG 200 series, provided the transmission uses the same hydraulic circuit architecture. The 4642.309.061 is not interchangeable with earlier WG 80 or WG 90 models due to differences in mounting flange dimensions. For proper installation, ensure the TYPE PLATE (0730365125) is correctly affixed to verify the exact transmission model, and use the GROOVED STUD (0631311009) for secure mounting alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4642301205 | TRANSMISSION HOUSING | Secondary housing for hydraulic valve body |
| 0730365125 | TYPE PLATE | Identification plate with transmission serial number |
| 0631311009 | GROOVED STUD | Alignment pin for housing assembly |
| 4642301168 | SCREEN SHEET | Fine mesh filter for oil intake |
| 4642301169 | SCREEN SHEET | Coarse mesh pre-filter for debris |
| 0636100621 | HEXAGON SCREW | Fastener for securing cover plates |
| 4642301186 | SCREEN SHEET | Magnetic screen for ferrous particle capture |
| 4644106300 | SHIFT SYSTEM | Complete gear selection mechanism |
| 4644306500 | COVER PLATE | Protective cover for shift system access |
Frequently Asked Questions
Q: How do I know if the 4642.309.061 needs replacement?
A: The primary indicator is visible oil seepage around the transmission housing joint where this seal sits. If you notice fluid accumulation on the bell housing or a persistent low oil level without external leaks, the seal may be compromised.
Q: Can this part be installed without removing the transmission?
A: In most WG 100/110/150 applications, the 4642.309.061 can be accessed by removing the transmission oil pan and lower valve body. However, for WG 180/200 models, partial transmission removal may be required due to clearance restrictions.
Q: Is the 4642.309.061 compatible with synthetic transmission fluids?
A: Yes, this OEM part is fully compatible with all ZF-approved synthetic and mineral-based transmission fluids, including ZF LifeguardFluid 8 and 9 series. Always verify fluid compatibility with your specific transmission model.
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Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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