Overview
This genuine OEM ZF 4656.183.244 LOOSE PARTS kit is a critical service component designed specifically for the WG 171 series transmission. It functions as a collection of internal fasteners, seals, and positioning elements that secure the valve body and hydraulic control assembly within the main casing. Without this kit, the transmission’s shift logic and oil routing become unstable, leading to erratic performance. The SKU 4656.183.244 is factory-matched to the WG171’s internal geometry, ensuring that every TRANSMISSION HOUSING and HOUS.FRONT SECT interface remains precisely aligned during high-torque operation.
Symptoms of Failure
- Intermittent gear slippage under load: When the loose parts degrade, the valve body loses its clamping force, causing the clutch packs to slip during acceleration.
- External oil seepage at the housing seam: Worn fasteners or damaged seals within the 4656.183.244 set allow transmission fluid to weep past the TUBE connections and the main housing gasket.
- Delayed or harsh engagement: A loose internal assembly disrupts hydraulic pressure timing, resulting in a noticeable lag when shifting from Neutral to Drive or Reverse.
- Metallic rattling from the bell housing area: Unsecured components vibrate against the SCREEN SHEET, producing a distinct noise that worsens as the transmission warms up.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 4656.183.244 |
| Material Composition | Steel alloy with zinc-nickel plating (fasteners); NBR rubber (seals) |
| Weight (approx.) | 0.45 kg (1.0 lb) |
| OEM Reference | ZF 4656.183.244 |
| Compatible Series | WG 171 |
| Included Components | Retaining clips, dowel pins, sealing washers, and mounting bolts |
Compatibility
This genuine ZF 4656.183.244 LOOSE PARTS kit is engineered primarily for the WG 171 transmission series. It is also compatible with the WG 180 and WG 200 series when used in conjunction with the correct HOUSING REAR PART. For applications involving the WG 220 or WG 240, verify that the O-RING cross-section matches your existing seal groove. Always consult the ZF parts catalog to confirm fitment with your specific transmission serial number.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101028 | TRANSMISSION HOUSING | Main structural casing that encloses the gear train and valve body. |
| 4656301066 | HOUS.FRONT SECT | Front section of the housing that supports the input shaft and pump. |
| 4656201015 | SCREEN SHEET | Fine mesh filter that protects the hydraulic circuit from debris. |
| 4656301037 | TUBE | Fluid transfer conduit between the pump and valve body. |
| 0634313514 | O-RING | Seals the tube and housing joints to prevent fluid leaks. |
| 0636100803 | CAP SCREW | M10 fastener used to secure the rear housing cover. |
| 4656301042 | HOUSING REAR PART | Rear casing section that encloses the output shaft and PTO. |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for precise mating of housing halves. |
| 0636100801 | CAP SCREW | M8 fastener for the valve body mounting bracket. |
| 0636100160 | CAP SCREW | M6 fastener for the screen sheet retention plate. |
Frequently Asked Questions
Q: Can I reuse the old fasteners from my WG171 instead of buying the 4656.183.244 kit?
A: ZF recommends against reusing fasteners because the torque-to-yield bolts lose their clamping force after initial installation. The 4656.183.244 LOOSE PARTS kit includes fresh, pre-coated bolts that restore the correct preload on the valve body.
Q: Will this kit fix a hard shift between 2nd and 3rd gear?
A: Yes, if the hard shift is caused by a loose valve body or misaligned tube. The 4656.183.244 set secures the TUBE and housing sections, which stabilizes hydraulic pressure. However, if the shift solenoids are worn, you will need additional parts.
Q: How do I verify that 4656.183.244 fits my WG171 transmission?
A: Check the transmission data plate for the model code. If it begins with “WG171,” this kit is a direct fit. For hybrid builds using a WG180 housing, you must also order the O-RING separately to match the different bore diameter.
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Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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