Overview
The ZF 4642.311.064 PUMP FLANGE is a critical OEM genuine component engineered specifically for the WG 150 Series transmission. This precision-machined flange serves as the mounting interface between the hydraulic pump and the transmission housing, ensuring proper alignment and oil flow to the pump assembly. As an integral part of the transmission’s hydraulic circuit, the 4642.311.064 pump flange maintains consistent pressure and lubrication throughout the system. When installed correctly, this genuine ZF part guarantees a leak-proof seal and optimal pump performance, directly impacting the transmission’s operational reliability and service life.
Symptoms of Failure
When the ZF 4642.311.064 pump flange begins to wear, operators may notice several distinct failure indicators. Oil leaks around the pump mounting area are the most common symptom, often appearing as drips or wet spots on the transmission housing. Hydraulic pressure fluctuations can occur as the flange loses its sealing integrity, leading to inconsistent gear engagement. Unusual whining or cavitation noises from the pump area indicate air ingress through a compromised flange seal. Additionally, reduced transmission response time during shifting may signal that the pump is not receiving adequate oil flow due to flange misalignment or warpage.
Technical Specifications
| Part Number | 4642.311.064 |
| Product Type | Pump Flange |
| Material | High-grade aluminum alloy (EN AC-42100) |
| Weight | 1.85 kg (4.08 lbs) |
| OEM Reference | ZF 4642.311.064 |
| Surface Finish | Anodized corrosion-resistant coating |
| Bolt Pattern | 6-hole M12 x 1.5 on 85 mm PCD |
| Sealing Surface | Precision-ground flatness tolerance ±0.05 mm |
Compatibility
This genuine ZF pump flange is primarily designed for the WG 150 Series transmission, but it also fits select models in the WG 180 and WG 200 families due to shared hydraulic pump mounting architectures. The 4642.311.064 part is compatible with WG 150, WG 151, WG 152, WG 180, and WG 200 transmissions manufactured after 2005. Always verify the transmission serial number against ZF’s compatibility chart before installation. For complete assembly, this flange mounts directly to the 4642101109: TRANSMISSION HOUSING and the 4642301205: TRANSMISSION HOUSING, requiring the 0636100621: HEXAGON SCREW for secure fastening.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4642301205 | TRANSMISSION HOUSING | Secondary housing for auxiliary components |
| 0730365125 | TYPE PLATE | Identification plate with transmission specs |
| 0631311009 | GROOVED STUD | Alignment pin for precise flange positioning |
| 4642301168 | SCREEN SHEET | Fine mesh filter for oil debris protection |
| 4642301169 | SCREEN SHEET | Coarse mesh pre-filter for pump inlet |
| 0636100621 | HEXAGON SCREW | Fastener for flange-to-housing mounting |
| 4642301186 | SCREEN SHEET | Secondary fine filter for hydraulic circuit |
| 4644106231 | SHIFT SYSTEM | Hydraulic valve body for gear selection |
| 4644306470 | GASKET | Sealing gasket for pump flange interface |
