Overview
The ZF 4657.183.266 LOOSE PARTS kit is a critical OEM genuine service set designed specifically for the WG 211 series transmission. This assembly contains the essential fasteners, seals, and positioning components required to secure the main transmission housing sections during rebuild or repair. The SKU 4657.183.266 ensures that all loose hardware meets ZF’s exacting tolerances for clamping force and vibration resistance. When paired with the TRANSMISSION HOUSING, this kit guarantees a leak-free interface between the gear train and the external casing. It sits at the junction of the front and rear housing sections, providing the necessary structural integrity for high-torque industrial applications.
Symptoms of Failure
- Transmission fluid seepage at housing joints: Worn or missing loose parts cause oil to weep from the mating surfaces, often visible as dark stains on the bell housing.
- Abnormal gear rattle or vibration during load shifts: Degraded fasteners allow micro-movement between the HOUS.FRONT SECT and the main case, leading to misalignment.
- Difficulty engaging forward or reverse gears: Loose retaining hardware can cause the internal shift mechanism to bind, resulting in delayed or harsh engagement.
- Metallic debris in the oil pan: Failing cylindrical pins or cap screws shed material as they fatigue, contaminating the hydraulic circuit.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.183.266 |
| Material Composition | Case-hardened steel (fasteners), nitrile rubber (seals) |
| Weight (kit) | 0.85 kg (1.87 lbs) |
| Thread Pitch (primary cap screws) | M10 x 1.5 |
| Torque Specification | 45 Nm ± 5 Nm (dry) |
| Operating Temperature Range | -40°C to +120°C |
| OEM Reference | ZF 4657.183.266 (genuine) |
Compatibility
This LOOSE PARTS kit is engineered for the ZF WG 211 series, but its hardware dimensions also suit the WG180, WG200, and WG210 transmission families. It is a direct replacement for the original fasteners used in the HOUSING REAR PART assembly. Always verify that the CYLINDRICAL PIN included in the kit aligns with your specific housing dowel holes before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101049 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657301130 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657301131 | HOUSING REAR PART | Rear section housing for output flange |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636102489 | CAP SCREW | M10 bolt for housing fastening |
| 4656301148 | FIXING PLATE | Locking plate for bearing retention |
| 0636102463 | CAP SCREW | M8 bolt for accessory mounting |
| 4657201133 | SCREEN SHEET | Filter mesh for oil return circuit |
| 0636115287 | CAP SCREW | M12 bolt for heavy-duty clamping |
| 4657301065 | PLATE | Spacer plate for valve body alignment |
Frequently Asked Questions
Q: Can I reuse the old cap screws from my WG211 with this kit?
A: No. ZF specifies single-use torque-to-yield fasteners. The 4657.183.266 kit includes new CAP SCREW components that must be installed to prevent thread galling and ensure proper clamp load.
Q: Does this kit include the screen sheet for the oil filter?
A: The LOOSE PARTS kit focuses on hardware. For the oil filtration element, order the SCREEN SHEET separately as a complementary service item.
Q: How do I verify the correct torque for the fixing plate?
A: The FIXING PLATE requires 25 Nm. Always consult the ZF WG211 service manual for the complete torque sequence to avoid housing distortion.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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