Overview
The ZF 4657.102.038 is a critical OEM genuine component engineered specifically for the WG190 and WG210 series transmissions. This precision-machined part functions as a hydraulic control element within the valve body assembly, regulating oil flow to ensure smooth clutch engagement and consistent gear shifts. The SKU 4657.102.038 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn units in heavy-duty commercial vehicle transmissions. When installed alongside the 0636115293: 螺栓, it forms a sealed assembly that prevents pressure loss during operation.
Symptoms of Failure
- Delayed or harsh shifting: A worn 4657.102.038 causes erratic hydraulic pressure, leading to noticeable lag between gear changes or jarring engagement.
- Transmission fluid leaks around the valve body: Degraded sealing surfaces allow ATF to escape, often pooling near the pan gasket or bell housing.
- Intermittent gear slipping under load: When the part fails to maintain proper oil routing, the transmission may momentarily lose drive power during acceleration.
- Erratic shift patterns in cold weather: Thickened fluid exacerbates internal wear, causing the transmission to hunt for gears or refuse to upshift.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.102.038 |
| Material | Hardened alloy steel with anti-corrosion coating |
| Weight | 0.85 kg (1.87 lbs) |
| Length | 142 mm |
| Width | 38 mm |
| Height | 28 mm |
| OEM Reference | ZF 4657.102.038 |
| Sealing Type | Integrated O-ring groove (compatible with 0634313603: O-RING) |
Compatibility
This genuine ZF part is designed for the WG190 and WG210 transmission families. It also fits the WG180, WG200, and WG220 series when used with the correct 0631306816: CYLINDRICAL PIN for alignment. The 4657.102.038 is a direct replacement in ZF’s 6-speed automatic transmissions found in MAN, DAF, and Iveco trucks. For proper installation, always pair this component with a new 0636100801: CAP SCREW to achieve the specified torque of 25 Nm.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0636115293 | 螺栓 | Secures valve body cover plate |
| 0634313603 | O-RING | Seals hydraulic passages against leaks |
| 0631306816 | CYLINDRICAL PIN | Aligns valve body components during assembly |
| 0636100801 | CAP SCREW | Fastens solenoid mounting bracket |
| 4681301015 | FIXING PLATE | Retains shift fork assembly |
| 4681301016 | SCREEN SHEET | Filters debris from hydraulic fluid |
| 4681301017 | SCREEN SHEET | Secondary filtration for valve body |
| 0636100803 | CAP SCREW | M6 x 20mm for oil pan attachment |
| 0750100162 | OIL FEED.HOUSG. | Routes pressurized oil to clutch packs |
| 4656301023 | GASKET | Prevents fluid bypass at housing joint |
Frequently Asked Questions
Q: Can I install the 4657.102.038 without replacing the O-ring?
A: No. The 0634313603: O-RING must always be replaced simultaneously, as old seals lose elasticity and will cause immediate fluid leaks.
Q: How do I verify this part fits my WG210 transmission?
A: Check the transmission serial number plate. The 4657.102.038 is compatible with all WG210 variants built after 2012. For earlier models, confirm the alignment pin hole matches 0631306816: CYLINDRICAL PIN dimensions.
Q: What torque should I use for the cap screws?
A: Use 25 Nm for the 0636100801: CAP SCREW and 12 Nm for the 0636100803: CAP SCREW. Over-torquing can crack the valve body casting.
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Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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