Overview
The ZF 4166.034.176 is a critical OEM genuine component engineered specifically for the WG190, WG191, and WG210 series transmissions. This precision-machined part functions as a sealing and alignment element within the transmission’s hydraulic control assembly, ensuring proper fluid routing and pressure regulation. As an original ZF part, SKU 4166.034.176 guarantees exact fitment and material integrity, reducing the risk of premature wear in heavy-duty industrial applications. It sits directly between the main valve body and the TRANSMISSION HOUSING, where it maintains critical tolerances under high thermal loads.
Symptoms of Failure
- Hydraulic fluid seepage around the valve body interface: When the 4166.034.176 degrades, operators often notice oil weeping from the joint between the control module and the HOUS.FRONT SECT, leading to gradual pressure loss.
- Erratic gear engagement or delayed shifting: A worn part disrupts pilot pressure signals, causing harsh or hesitant shifts, especially in WG191 and WG210 units.
- Contamination in the transmission fluid: Material fatigue can introduce debris into the oil circuit, accelerating wear on adjacent components like the HOUSING REAR PART.
- Audible whining or chattering from the transmission: Loss of sealing integrity allows air ingestion, producing abnormal noise during load cycles.
Technical Specifications
| Specification | Detail |
|---|---|
| OEM Part Number | 4166.034.176 |
| Material | Hardened alloy steel with corrosion-resistant coating |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 120 mm x 45 mm x 25 mm |
| OEM Reference | ZF 4166.034.176 (Genuine) |
| Torque Specification | 45 Nm (33 ft-lbs) when installed |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This genuine ZF part is designed for the WG180, WG190, WG191, WG200, WG210, WG211, and WG230 series transmissions. It is a direct replacement for units requiring precise hydraulic control restoration. When servicing these models, always inspect the HOUSING REAR SECTION for matching wear patterns to ensure complete assembly integrity.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing for pump and clutch |
| 4657201170 | HOUSING REAR PART | Rear cover for output shaft support |
| 4657298102 | HOUSING REAR SECTION | Intermediate rear housing segment |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | Fastener for valve body attachment |
| 4656301148 | FIXING PLATE | Retention bracket for internal components |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic fluid |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for oil intake |
| 0636100803 | CAP SCREW | High-tensile bolt for housing assembly |
Frequently Asked Questions
Q: Can the 4166.034.176 be used in a WG230 transmission?
A: Yes, this part is fully compatible with the WG230 series, as it shares the same hydraulic control interface as the WG190 and WG210 models. Always verify seal condition on the mating housing surfaces.
Q: What tools are required to replace this part?
A: Standard metric socket set, torque wrench, and a seal puller are recommended. Ensure the transmission is drained and the HOUS.FRONT SECT is clean before installation.
Q: How does this part interact with the screen sheets?
A: The 4166.034.176 works in tandem with SCREEN SHEET (4657301032) and SCREEN SHEET (4657301033) to maintain clean oil flow through the valve body, preventing debris from causing sticking valves.
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Phone: +86 158 2286 3467 |
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