Overview
The ZF 4656.183.017 LOOSE PARTS kit is a critical service assembly designed specifically for the WG 160 series transmission. This genuine OEM part contains the necessary loose hardware and small components required to secure and align internal assemblies during a rebuild or major repair. Positioned within the main gear case, this kit interfaces directly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to ensure proper clamping force and alignment of the planetary gear sets. The SKU 4656.183.017 is often overlooked during routine maintenance, yet it is essential for preventing fastener fatigue and maintaining the structural integrity of the entire WG160 assembly.
Symptoms of Failure
- Transmission oil leaks at the housing seam: When the loose parts kit degrades, the sealing washers and retaining clips lose tension, causing fluid to weep between the HOUSING REAR PART and the main case.
- Gear slipping under load: Worn or missing fasteners from the 4656.183.017 kit allow the HOUSING REAR PART to shift slightly, resulting in intermittent gear engagement and power loss.
- Abnormal vibration or rattle from the bell housing: Loose bolts and pins inside this kit create micro-movement between the transmission housing sections, producing a distinct metallic chatter during idle or low-speed operation.
- Difficulty shifting into gear: If the fixing plates or screen sheets within the kit become dislodged, hydraulic pressure drops, causing delayed or harsh shifts.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4656.183.017 |
| OEM Reference | ZF 4656.183.017 |
| Material Composition | Steel alloy, hardened washers, zinc-plated fasteners |
| Weight (approx.) | 0.45 kg (1.0 lb) |
| Kit Contents | Bolts, pins, screen sheets, fixing plates |
| Compatible Housing | WG 160 series |
Compatibility
This genuine ZF 4656.183.017 LOOSE PARTS kit is engineered for the WG 160 transmission family. It is also compatible with the WG 180 and WG 200 series when used in conjunction with the correct TRANSMISSION HOUSING. For heavy-duty applications in the WG 220 or WG 240, verify the housing bolt pattern against the HOUS.FRONT SECT dimensions before installation. The kit is not backward-compatible with older WG 140 models without modification to the HOUSING REAR PART.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101031 | TRANSMISSION HOUSING | Main structural case for gear assembly |
| 4656201075 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4656201036 | HOUSING REAR PART | Rear housing section for output support |
| 4472239179 | HOUSING REAR PART | Alternate rear housing variant |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing sections |
| 4656301148 | FIXING PLATE | Secures bearing races in position |
| 0636100817 | CAP SCREW | High-tensile bolt for housing fastening |
| 4656301016 | SCREEN SHEET | Filter screen for oil return circuit |
| 4656301017 | SCREEN SHEET | Alternate mesh screen variant |
| 0636100803 | CAP SCREW | Shortened bolt for cover plates |
Frequently Asked Questions
Q: Can I reuse the old fasteners from my WG160 instead of buying the 4656.183.017 kit?
A: No. ZF specifies that all bolts, pins, and washers in this kit are single-use due to torque-to-yield requirements. Reusing them risks housing misalignment and oil leaks.
Q: Does this kit include the screen sheets and fixing plates?
A: Yes. The 4656.183.017 LOOSE PARTS kit contains the SCREEN SHEET (4656301016) and FIXING PLATE (4656301148) as part of the standard assembly.
Q: How do I verify this kit fits my WG160 transmission?
A: Check the part number stamped on your existing TRANSMISSION HOUSING. If it matches the WG160 casting code, this kit is the correct replacement.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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