Overview
The ZF 4681.201.026 TUBE is a precision-engineered fluid conduit designed for the BP210, BP230, and WG190 transmission series. This OEM genuine part, identified by SKU 4681.201.026, serves as a critical channel for directing hydraulic oil flow within the transmission housing assembly. It ensures proper lubrication and cooling of internal components, maintaining optimal pressure levels during gear shifts. Without this tube, the transmission cannot sustain the hydraulic circuit integrity required for heavy-duty industrial applications. The part is manufactured to ZF’s exacting tolerances, guaranteeing a leak-free seal when installed alongside the TRANSMISSION HOUSING and the HOUS.FRONT SECT.
Symptoms of Failure
When the ZF 4681.201.026 TUBE wears out, operators may notice distinct operational issues. Hydraulic oil leaks often appear around the tube connections, leaving visible puddles under the transmission. Delayed or erratic gear engagement occurs as fluid pressure drops, causing hesitation when shifting between forward and reverse. Overheating of the transmission fluid is another common symptom, as reduced oil flow fails to dissipate heat effectively. In severe cases, intermittent loss of drive power may be reported, particularly under heavy load conditions. These failure modes directly impact uptime and should be addressed promptly to avoid damage to the HOUSING REAR PART.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4681.201.026 |
| Material | High-strength steel with anti-corrosion coating |
| Length | 185 mm (estimated) |
| Outer Diameter | 12 mm |
| Weight | 0.15 kg |
| OEM Reference | ZF 4681.201.026 |
| Seal Type | O-ring groove (O-ring not included) |
Compatibility
This tube is specifically engineered for ZF transmission models in the BP210, BP230, WG190, and WG210 series. It is also compatible with the WG180 and WG200 series when used in conjunction with the HOUSING REAR SECTION. The part fits all standard hydraulic circuits within these platforms, making it a direct replacement for worn or damaged OEM components. Always verify your transmission model number before installation to ensure correct fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101088 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4657201183 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657201184 | HOUSING REAR PART | Rear housing section for output shaft |
| 4657298111 | HOUSING REAR SECTION | Alternate rear housing component |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4681301015 | FIXING PLATE | Retainer plate for tube positioning |
| 4681301016 | SCREEN SHEET | Filter screen for hydraulic fluid |
| 4681301017 | SCREEN SHEET | Secondary filter screen variant |
| 0636100803 | CAP SCREW | Alternate fastener for tube clamps |
Frequently Asked Questions
Q: Can the ZF 4681.201.026 TUBE be installed without replacing the O-rings?
A: It is strongly recommended to replace all sealing elements when installing this tube. Reusing old O-rings may compromise the hydraulic seal and lead to premature failure.
Q: How do I confirm this tube fits my WG190 transmission?
A: Check the transmission model plate located on the housing. The WG190 series uses this tube in the main hydraulic circuit. If your unit has a modified housing, cross-reference the part with the TRANSMISSION HOUSING diagram.
Q: What is the typical lifespan of this tube under normal operating conditions?
A: With proper maintenance and clean hydraulic fluid, the tube can last the lifetime of the transmission. However, vibration or impact damage may require earlier replacement.
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Phone: +86 158 2286 3467 |
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