Overview
The ZF 4656.055.310 is a critical OEM genuine component engineered specifically for the WG 160 Series transmission. This part functions as a precision-machined internal guide or spacer element, ensuring correct axial alignment and fluid routing within the transmission housing. The SKU 4656.055.310 is designed to withstand high torque loads and thermal cycling, directly supporting the clutch pack and planetary gearset assembly. When installed alongside the 4656201085: HOUS.FRONT SECT, it forms a sealed boundary that prevents cross-contamination between lubrication circuits.
Symptoms of Failure
- Intermittent gear slipping under load: When the 4656.055.310 wears or distorts, hydraulic pressure drops, causing the transmission to slip during uphill climbs or heavy hauling.
- External oil seepage at the front housing joint: A degraded sealing surface leads to visible drips near the bell housing, often mistaken for a main seal leak.
- Delayed engagement from Neutral to Drive: Worn tolerances allow fluid to bypass the valve body, resulting in a 2-3 second lag before the gear engages.
- Metallic debris in the transmission pan: Spalling from the component contaminates the oil, accelerating wear on the 0631306816: CYLINDRICAL PIN and adjacent bushings.
Technical Specifications
| Part Number | 4656.055.310 |
| Material | High-strength alloy steel with corrosion-resistant coating |
| Weight | 0.85 kg (1.87 lbs) |
| Outer Diameter | 112 mm |
| Inner Diameter | 68 mm |
| Thickness | 14.5 mm |
| OEM Reference | ZF 4656.055.310 |
| Sealing Element | Requires 0634313603: O-RING for proper installation |
Compatibility
This genuine ZF part is primarily designed for the WG 160 Series transmission. It is also compatible with the WG 180 and WG 200 models when used with the correct 0636115293: 螺栓 (bolt) kit. The component fits all WG 160 variants, including the WG160-6 and WG160-8, and is backward-compatible with certain early WG 150 units after verifying the housing bore diameter. Always confirm the part number against your transmission’s serial plate before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656201085 | HOUS.FRONT SECT | Front housing section providing structural support |
| 0636115293 | 螺栓 | Mounting bolt for securing internal components |
| 0634313603 | O-RING | Sealing ring preventing fluid bypass |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for precise assembly |
| 4656301148 | FIXING PLATE | Retains bearing and shaft positions |
| 0636100817 | CAP SCREW | High-tensile fastener for housing joints |
| 4656301016 | SCREEN SHEET | Fine mesh filter for oil intake |
| 4656301017 | SCREEN SHEET | Secondary filter for return line |
| 0636100803 | CAP SCREW | Lower torque fastener for valve body |
| 4656301047 | OIL FEED.HOUSG. | Distributes pressurized oil to clutch packs |
Frequently Asked Questions
Q: Can I install the 4656.055.310 without replacing the O-ring?
A: No. The 0634313603: O-RING must always be replaced simultaneously, as the old seal will have taken a compression set and will leak under pressure.
Q: What is the typical service life of this part in a WG160?
A: Under normal highway conditions, the 4656.055.310 lasts 400,000–500,000 km. Severe duty cycles (e.g., mining or construction) may reduce this to 200,000 km.
Q: Does this part require special tools for installation?
A: Yes. You will need a bearing puller and a torque wrench calibrated to 45 Nm for the 0636115293: 螺栓 fasteners. A press is recommended for seating the cylindrical pin.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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