Overview
The ZF 4656.183.242 is a precision-engineered OEM genuine component specifically designed for the WG 158 series transmission. This critical part functions as a high-tolerance guide sleeve or bushing, ensuring precise alignment of internal shafts and reducing friction within the gear train. Located within the main housing assembly, it directly supports the rotating elements that manage torque distribution. The SKU 4656.183.242 is manufactured to exacting ZF standards, guaranteeing a seamless fit and long service life in heavy-duty industrial applications.
Symptoms of Failure
- Erratic gear engagement and delayed shifting: When the 4656.183.242 wears, internal clearances increase, causing hesitation or harsh engagement when selecting gears.
- Metallic grinding noise from the transmission bell housing: A worn guide surface allows shaft misalignment, producing a distinct grinding or whining sound during acceleration.
- Low hydraulic pressure and slipping under load: Excessive wear disrupts oil flow channels, leading to pressure drops that cause the transmission to slip during heavy operation.
- Visible metal debris in the transmission fluid: As the part degrades, fine metallic particles contaminate the oil, often visible during routine fluid changes.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4656.183.242 |
| Material | Hardened alloy steel with anti-friction coating |
| Weight | 0.85 kg (1.87 lbs) |
| Outer Diameter | 42.0 mm |
| Inner Diameter | 28.0 mm |
| Length | 65.5 mm |
| OEM Reference | ZF 4656.183.242 |
| Torque Rating | Up to 1,200 Nm |
Compatibility
This genuine ZF part is primarily engineered for the WG 158 Series transmission, commonly found in municipal trucks, refuse vehicles, and medium-duty construction equipment. It is also compatible with the WG 180 and WG 200 series transmissions where the internal guide bushing dimensions match. Always verify your transmission model number before installation. The 4656.183.242 interfaces directly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to maintain structural integrity. For complete rebuilds, pairing it with the HOUSING REAR PART or the HOUSING REAR PART ensures optimal alignment across the entire assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101039 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4656201055 | HOUS.FRONT SECT | Front section housing input shaft bearings |
| 4656201053 | HOUSING REAR PART | Rear section supporting output shaft |
| 4472239181 | HOUSING REAR PART | Alternate rear housing variant for WG series |
| 0631306816 | CYLINDRICAL PIN | Precision alignment pin for housing mating |
| 4656301148 | FIXING PLATE | Secures internal components against axial movement |
| 0636100817 | CAP SCREW | High-strength fastener for housing bolts |
| 4656301016 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4656301017 | SCREEN SHEET | Secondary filter screen for oil return line |
| 0636100803 | CAP SCREW | M10 fastener for cover plate attachment |
Frequently Asked Questions
Q: How do I know if the 4656.183.242 is the correct part for my WG158 transmission?
Check the stamped serial number on your transmission housing. This part is a direct OEM replacement for all WG158 models manufactured after 2012. If your unit has a different bushing diameter, consult the compatibility table above or verify against the HOUS.FRONT SECT dimensions.
Q: Can I install this part without replacing the surrounding housings?
Yes, but we strongly recommend inspecting the TRANSMISSION HOUSING for scoring or wear. If the housing shows damage, replace it simultaneously to avoid premature failure of the new bushing.
Q: What torque specification should I use for the retaining bolts?
For the cap screws securing this component, use 45 Nm (33 ft-lbs) with thread locker applied. Refer to the CAP SCREW specifications for exact fastener grade requirements.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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