Overview
The ZF 4656.183.056 LOOSE PARTS set is a critical service kit designed specifically for the WG 160 Series transmission. This assembly contains the essential loose components required to secure and align internal sub-assemblies during a rebuild or major repair. Positioned within the main gear train housing, these parts prevent axial movement and maintain precise clearances between rotating elements. The SKU 4656.183.056 is an OEM genuine part, ensuring exact fitment and metallurgical compatibility with the original ZF design. When paired with the TRANSMISSION HOUSING and the HOUS.FRONT SECT, this kit restores the structural integrity of the gearbox casing.
Symptoms of Failure
- Transmission housing oil leaks at mating surfaces: Worn or missing loose parts cause improper sealing between the HOUSING REAR PART and the main case, leading to visible fluid seepage.
- Gear slipping under load: When these components degrade, internal clearances increase, allowing gear clusters to shift out of alignment during torque application.
- Abnormal vibration or rattle from the bell housing: Loose retaining elements permit axial play in the input shaft, generating a distinct metallic noise at idle or low RPM.
- Difficult gear engagement: Misalignment caused by failed loose parts can prevent synchromesh units from fully seating, resulting in grinding or delayed shifts.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4656.183.056 |
| Material | Hardened alloy steel / zinc-plated carbon steel |
| Weight (approx.) | 0.85 kg (1.87 lbs) |
| OEM Reference | ZF 4656.183.056 |
| Compatible Housing | TRANSMISSION HOUSING |
| Fastener Type | CAP SCREW (M10 x 1.5) |
| Sealing Element | SCREEN SHEET (fine mesh) |
Compatibility
This LOOSE PARTS kit is engineered for the ZF WG 160 Series, but its application extends to closely related models sharing the same casing architecture. It is fully compatible with the WG 160, WG 180, and WG 200 transmissions. The kit also integrates with the HOUSING REAR PART (variant 4472239179) found in later production runs. For proper installation, ensure the HOUS.FRONT SECT is free of debris and that the CYLINDRICAL PIN alignment dowels are intact.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101031 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4656201075 | HOUS.FRONT SECT | Front section of the transmission housing |
| 4656201036 | HOUSING REAR PART | Rear housing section for output shaft |
| 4472239179 | HOUSING REAR PART | Alternate rear housing variant |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 4656301148 | FIXING PLATE | Retains bearing preload in the case |
| 0636100817 | CAP SCREW | M10 fastener for housing bolts |
| 4656301016 | SCREEN SHEET | Fine mesh filter for oil return |
| 4656301017 | SCREEN SHEET | Coarse mesh filter variant |
| 0636100803 | CAP SCREW | M8 fastener for auxiliary brackets |
Frequently Asked Questions
Q: Can I reuse the old loose parts from my WG 160 transmission?
A: No. These components are designed as single-use items due to thread-locking compounds and crush washers. Reusing them risks oil leaks and fastener loosening under vibration.
Q: Does this kit include the CYLINDRICAL PIN and FIXING PLATE?
A: The 4656.183.056 kit contains the loose hardware (bolts, washers, clips) but does not include the alignment pins or fixing plate. Those must be ordered separately for a complete rebuild.
Q: Will this part fit a ZF WG 200 transmission?
A: Yes. The WG 200 uses the same housing interface as the WG 160. However, verify the HOUSING REAR PART number on your unit to confirm compatibility with the rear seal carrier.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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