Overview
The ZF 4656.056.311 is a precision-engineered OEM genuine component specifically designed for the WG 160 Series transmission. This part functions as a critical internal control element, managing hydraulic fluid routing within the valve body assembly to ensure precise clutch engagement and gear selection. The SKU 4656.056.311 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and reliable performance in heavy-duty commercial vehicle transmissions. When installed alongside the 4656201085: HOUS.FRONT SECT, this part completes the hydraulic circuit necessary for smooth power delivery.
Symptoms of Failure
- Delayed or harsh gear engagement: When the 4656.056.311 wears, internal sealing surfaces degrade, causing erratic hydraulic pressure and noticeable shift hesitation.
- Transmission fluid leaks near the valve body: A worn part can allow pressurized oil to escape, leading to low fluid levels and visible drips under the vehicle—a common “ZF WG160 oil leak” issue.
- Intermittent gear slipping under load: As the component loses its dimensional integrity, clutch packs may not hold pressure, resulting in momentary power loss during acceleration.
- Erratic shift patterns or failure to upshift: Degraded internal channels cause inconsistent pilot pressure, triggering fault codes and requiring replacement of the 0636115293: 螺栓 and associated seals during service.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 4656.056.311 |
| Material | Hardened alloy steel with corrosion-resistant coating |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 120 mm x 45 mm x 30 mm |
| OEM Reference | ZF 4656.056.311 (Genuine) |
| Operating Pressure Range | 8–18 bar |
| Temperature Range | -40°C to +120°C |
Compatibility
This OEM genuine part is engineered for the ZF WG 160 Series transmission family. It is also compatible with the following ZF models that share the same valve body architecture: WG 180, WG 200, WG 150, and WG 220 (when used with appropriate adapter kits). For proper installation, always replace the 0634313603: O-RING and 0631306816: CYLINDRICAL PIN to ensure a leak-free seal and correct alignment. The 4656.056.311 is not backward-compatible with older WG 120 series without significant modifications.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656201085 | HOUS.FRONT SECT | Front housing section for valve body assembly |
| 0636115293 | 螺栓 | Mounting bolt for securing transmission components |
| 0634313603 | O-RING | Hydraulic seal preventing fluid bypass |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for precise component positioning |
| 4656301148 | FIXING PLATE | Retaining plate for internal valve train |
| 0636100817 | CAP SCREW | High-tensile fastener for pressure containment |
| 4656301016 | SCREEN SHEET | Fine mesh filter for hydraulic fluid |
| 4656301017 | SCREEN SHEET | Secondary filter for debris protection |
| 0636100803 | CAP SCREW | Low-profile fastener for confined spaces |
| 4656301047 | OIL FEED.HOUSG. | Housing for oil supply channel |
Frequently Asked Questions
Q: Can the 4656.056.311 be used in a ZF WG180 transmission?
A: Yes, this part is fully compatible with the WG180 series, provided the transmission uses the same valve body architecture. Always verify by cross-referencing your existing part number.
Q: What tools are needed to replace this component?
A: Standard metric socket set, torque wrench, and a seal pick for the O-ring. We recommend replacing the 0634313603: O-RING simultaneously to prevent future leaks.
Q: How do I confirm this is an OEM genuine part?
A: The SKU 4656.056.311 is stamped directly on the component. Genuine ZF parts feature a laser-etched logo and a matte finish, unlike aftermarket copies.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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