Overview
The ZF 4656.006.140 is a precision-engineered OEM genuine component specifically designed for the WG 115 Series transmission family. This critical part functions as a sealing and alignment element within the transmission’s hydraulic control circuit, ensuring consistent oil pressure regulation and smooth gear engagement. Positioned between the main valve body and the clutch pack assembly, the SKU 4656.006.140 directly influences shift quality and torque transfer efficiency. When installed alongside the 4656101056: TRANSMISSION HOUSING, it forms a sealed unit that prevents cross-contamination of hydraulic circuits.
Symptoms of Failure
- Erratic shifting or gear slipping under load: A worn 4656.006.140 can cause pressure loss in the clutch circuit, leading to delayed engagement or sudden disengagement during acceleration.
- Hydraulic fluid seepage near the valve body: Deterioration of the sealing surfaces results in visible oil leaks around the transmission pan or bell housing, often accompanied by a burnt smell.
- Harsh or clunking gear changes: Inconsistent fluid flow from a failing part creates abrupt pressure spikes, producing audible metallic noises during upshifts or downshifts.
- Overheating transmission fluid: Reduced hydraulic efficiency forces the system to work harder, elevating operating temperatures and accelerating wear on adjacent components like the 4656201075: HOUS.FRONT SECT.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 4656.006.140 |
| Material | Hardened alloy steel with corrosion-resistant coating |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 95 mm x 45 mm x 32 mm |
| OEM Reference | ZF 4656.006.140 (Genuine) |
| Operating Temperature Range | -40°C to +120°C |
| Torque Rating | 120 Nm (peak) |
Compatibility
This OEM genuine part is engineered for the ZF WG 115 Series, but its design also supports select models in the WG180 and WG200 families due to shared hydraulic architecture. It is a direct replacement for units requiring the 4656201077: HOUSING REAR PART and the 4656298049: HOUSING REAR SECTION. Always verify your transmission’s serial number before ordering to ensure proper fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0631306816 | CYLINDRICAL PIN | Aligns and secures housing components during assembly |
| 4656301148 | FIXING PLATE | Provides rigid mounting surface for valve body |
| 0636100817 | CAP SCREW | Fastens housing sections with precise torque retention |
| 4656301016 | SCREEN SHEET | Filters debris from hydraulic fluid flow |
| 4656301017 | SCREEN SHEET | Secondary filtration for high-pressure circuits |
| 0636100803 | CAP SCREW | Secures rear housing to main transmission casing |
Frequently Asked Questions
Q: How do I know if the 4656.006.140 is failing in my WG115 transmission?
A: Look for gradual oil seepage around the valve body cover or a persistent “slip” sensation when shifting from 2nd to 3rd gear. A diagnostic pressure test showing below-spec readings in the clutch circuit often confirms wear.
Q: Can I replace this part without removing the entire transmission?
A: Yes, in most WG115 applications, the 4656.006.140 is accessible after draining the fluid and removing the transmission pan and valve body. However, always consult the ZF service manual for torque specifications and alignment procedures.
Q: Is this part interchangeable with aftermarket alternatives?
A: We strongly recommend using OEM genuine parts like this SKU. Aftermarket versions may have different material hardness or dimensional tolerances, which can lead to premature failure or damage to the TRANSMISSION HOUSING.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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