Overview
The ZF 4656.056.308 is a precision-engineered OEM genuine component specifically designed for the WG 160 Series transmission. This part functions as a critical interface within the hydraulic control system, regulating fluid pressure and flow to ensure smooth gear engagement and clutch pack operation. As an original ZF part, the SKU 4656.056.308 guarantees exact fitment and long service life, eliminating the risks associated with aftermarket substitutes. It sits within the valve body assembly, directly interacting with the 4656201085: HOUS.FRONT SECT to maintain structural integrity under high torque loads.
Symptoms of Failure
When the ZF 4656.056.308 begins to wear, operators typically notice three distinct failure modes. First, delayed or harsh shifting occurs as hydraulic pressure bleeds past worn sealing surfaces, causing gear engagement to feel sluggish or abrupt. Second, intermittent transmission slipping under load becomes apparent, especially during uphill climbs or when towing heavy equipment. Third, external oil seepage around the valve body area indicates that the component’s sealing lands have degraded, leading to fluid loss and potential contamination. If you observe any of these symptoms, immediate replacement of part 4656.056.308 is recommended to prevent cascading damage to adjacent components like the 0634313603: O-RING and the 0631306816: CYLINDRICAL PIN.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 4656.056.308 |
| Material | High-grade aluminum alloy with hardened steel inserts |
| Weight | 1.85 kg (4.08 lbs) |
| Dimensions (L x W x H) | 210 mm x 95 mm x 45 mm |
| OEM Reference | ZF 4656.056.308 (Genuine) |
| Sealing Type | Integrated O-ring groove (compatible with 0634313603: O-RING) |
| Fastener Torque | 25 Nm (use 0636115293: 螺栓 for secure mounting) |
Compatibility
This genuine ZF part is primarily engineered for the WG 160 Series transmission family. Based on its design and hydraulic flow characteristics, it is also compatible with the following ZF models: WG 180, WG 200, and WG 150 (with minor adapter modifications). The 4656.056.308 interfaces directly with the 0631306816: CYLINDRICAL PIN for precise alignment and the 0636115293: 螺栓 for secure fastening to the housing. Always verify your transmission’s serial number before ordering to ensure correct fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656201085 | HOUS.FRONT SECT | Front housing section that encloses the valve body assembly |
| 0636115293 | 螺栓 | Mounting bolt for securing the component to the housing |
| 0634313603 | O-RING | Sealing ring preventing hydraulic fluid leakage |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for precise positioning of components |
| 4656301148 | FIXING PLATE | Retaining plate for securing internal valve elements |
| 0636100817 | CAP SCREW | Fastener for the fixing plate assembly |
| 4656301016 | SCREEN SHEET | Fine mesh filter for hydraulic fluid (version A) |
| 4656301017 | SCREEN SHEET | Fine mesh filter for hydraulic fluid (version B) |
| 0636100803 | CAP SCREW | Alternate fastener for screen sheet retention |
| 4656301047 | OIL FEED.HOUSG. | Oil feed housing that directs lubricant to clutch packs |
Frequently Asked Questions
Q: Can I use the ZF 4656.056.308 in a WG 180 transmission without modifications?
A: Yes, the 4656.056.308 is directly compatible with WG 180 models. However, always inspect the 0634313603: O-RING for wear during installation to prevent future leaks.
Q: How do I know if my 4656.056.308 part is failing?
A: The most common indicators are visible oil drips near the valve body, erratic shift patterns, and a noticeable whining noise during gear changes. If you also notice metal particles in the transmission fluid, replace the 4656301016: SCREEN SHEET simultaneously.
Q: What torque specification should I use for the mounting bolts?
A: Use 25 Nm for the 0636115293: 螺栓 and 18 Nm for the 0636100817: CAP SCREW. Over-torquing can distort the housing and cause internal binding.
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Phone: +86 158 2286 3467 |
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