Overview
The ZF 4657.183.262 LOOSE PARTS kit is a critical service assembly designed specifically for the WG 190 series transmission. This genuine OEM part set contains all the necessary fasteners, seals, and positioning components required to secure and align the main transmission housing sections during rebuild or repair. The SKU 4657.183.262 sits at the core of the transmission’s structural integrity, ensuring that the TRANSMISSION HOUSING remains properly mated to the HOUS.FRONT SECT and the HOUSING REAR PART. Without this loose parts set, the entire gear train and hydraulic circuit cannot maintain the precise tolerances required for reliable operation.
Symptoms of Failure
When the components within the 4657.183.262 kit begin to fail, operators typically encounter three distinct warning signs. First, external oil seepage at the housing joint lines becomes visible, often mistaken for a gasket failure when the actual cause is loose or fatigued fasteners. Second, intermittent gear slipping under heavy load occurs as the HOUSING REAR SECTION shifts out of alignment, causing clutch pack clearance issues. Third, abnormal vibration during torque converter lockup indicates that the housing sections are no longer rigidly connected. These symptoms often lead to premature wear of internal bearings and shafts if the loose parts kit is not replaced promptly.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4657.183.262 |
| Kit Contents | Bolts, dowels, washers, positioning pins |
| Material | High-tensile steel (grade 10.9) with zinc-nickel plating |
| Weight (kit) | 1.45 kg (3.2 lbs) |
| Applicable Housing | WG 190 series main case |
| Torque Specification | 85 Nm ± 5 Nm (final pass) |
Compatibility
This genuine ZF loose parts kit is engineered for the WG 190 transmission family. While the primary application is the WG190, the 4657.183.262 also fits the WG180 and WG200 series due to shared housing bolt patterns. It is not compatible with the older WG120 or WG150 models. Always verify that your transmission’s TRANSMISSION HOUSING casting number matches the WG190 prefix before installation. The kit replaces all loose hardware between the HOUS.FRONT SECT and the HOUSING REAR PART, as well as the HOUSING REAR SECTION interface.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101080 | TRANSMISSION HOUSING | Main structural case for gear train |
| 4657201167 | HOUS.FRONT SECT | Front section housing for converter |
| 4657201171 | HOUSING REAR PART | Rear housing section for output shaft |
| 4657298103 | HOUSING REAR SECTION | Extension housing for PTO mount |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | M10 bolt for housing fastening |
| 4656301148 | FIXING PLATE | Locking plate for bolt retention |
| 4657301034 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | M12 bolt for rear housing section |
Frequently Asked Questions
Q: Can I reuse the old bolts from my WG190 instead of buying the 4657.183.262 kit?
A: No. ZF specifies that all fasteners in this loose parts kit are single-use torque-to-yield bolts. Reusing them risks bolt fatigue and housing separation under load.
Q: Does this kit include the gaskets for the housing joints?
A: No. The 4657.183.262 contains only metal hardware (bolts, pins, washers). You must order the corresponding gasket set separately for the WG190.
Q: How do I know if my transmission needs this loose parts kit?
A: If you are replacing the TRANSMISSION HOUSING or any of the front/rear housing sections, this kit is mandatory. It is also recommended during any major overhaul of the WG190 series.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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