Overview
The ZF 4657.131.014 FILLER NOZZLE is a precision-engineered fluid delivery component designed specifically for the WG 210 series transmission. This OEM genuine part serves as the primary interface for introducing transmission fluid into the hydraulic system, ensuring a controlled and debris-free fill process. Positioned on the upper section of the transmission housing, the filler nozzle directs oil into the sump while preventing backflow and contamination. The SKU 4657.131.014 is manufactured to ZF’s exacting tolerances, guaranteeing a perfect seal and consistent flow rate during maintenance intervals. When paired with a robust TRANSMISSION HOUSING, this nozzle forms a critical part of the lubrication circuit, protecting internal gears and bearings from premature wear.
Symptoms of Failure
- External oil seepage at the fill port: A worn or cracked filler nozzle often causes visible fluid drips around the transmission fill neck, leading to low fluid levels and potential gear slipping.
- Difficult or slow fluid filling: When the nozzle’s internal channel becomes blocked or deformed, technicians experience backpressure or spillage during routine oil changes.
- Contaminated transmission fluid: A degraded nozzle seal allows dirt and moisture to enter the system, resulting in gritty oil and erratic shifting behavior.
- Whining noise from the pump area: Insufficient fluid delivery due to a faulty nozzle can starve the hydraulic pump, producing a high-pitched whine under load.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4657.131.014 |
| Material | Die-cast aluminum with corrosion-resistant coating |
| Overall Length | 85 mm |
| Inlet Diameter | 22 mm |
| Weight | 0.12 kg |
| OEM Reference | ZF 4657.131.014 |
| Seal Type | Integrated O-ring (Nitrile) |
Compatibility
This filler nozzle is engineered for the ZF WG 210 series, but its design also supports several related heavy-duty transmissions. It is directly compatible with WG180, WG200, and WG250 models that share the same upper housing architecture. The nozzle interfaces seamlessly with the HOUS.FRONT SECT and the HOUSING REAR PART, ensuring a leak-proof fit across multiple generations. For secure mounting, use a CYLINDRICAL PIN to align the nozzle during installation. Always verify your transmission’s serial number against the WG210 parts catalog before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101047 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4657201027 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657201020 | HOUSING REAR PART | Rear section supporting output bearings |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Retainer for internal oil passages |
| 4657301032 | SCREEN SHEET | Fine mesh filter for fluid intake |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for debris |
| 0636100803 | CAP SCREW | Bolt for filter housing attachment |
| 0750301003 | OIL FEED.HOUSG. | Oil delivery conduit to lubrication points |
Frequently Asked Questions
Q: Can I use the 4657.131.014 nozzle on a ZF WG180 transmission?
A: Yes, this filler nozzle is cross-compatible with WG180, WG200, and WG250 models that utilize the same upper housing design. Always confirm the mounting flange geometry matches your unit.
Q: What torque specification should I use when installing this filler nozzle?
A: ZF recommends tightening the retaining bolts to 25 N·m. Over-torquing can crack the aluminum housing. Use a new O-ring and a CYLINDRICAL PIN for proper alignment.
Q: How do I know if my filler nozzle is causing low transmission pressure?
A: Inspect for cracks or deformation around the inlet. A damaged nozzle allows air ingestion, leading to foamy fluid and pressure drops. Replace immediately if any physical damage is visible.
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Phone: +86 158 2286 3467 |
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