Overview
The ZF 4656.174.063 is a precision-engineered OEM genuine component specifically designed for the WG 160 series transmission. This critical part functions as a hydraulic control element, regulating oil flow and pressure within the valve body assembly to ensure smooth gear engagement and consistent power delivery. The SKU 4656.174.063 sits directly within the main control housing, interfacing with the shift valves and solenoids to modulate clutch pack actuation. As a factory-specification part, it guarantees exact tolerances and material composition required for long service life in heavy-duty commercial vehicle applications.
Symptoms of Failure
When the ZF 4656.174.063 begins to wear, operators typically notice delayed or harsh gear engagement during acceleration, particularly when shifting from neutral to drive. Another common failure symptom is intermittent transmission slipping under load, where the engine revs increase without corresponding vehicle speed. You may also observe erratic shift patterns or the transmission defaulting to a limp-home mode. In advanced cases, internal hydraulic pressure loss can cause complete loss of drive in specific gears, requiring immediate replacement of the 4656.174.063.
Technical Specifications
| Part Number | 4656.174.063 |
| OEM Reference | ZF 4656.174.063 |
| Material | Hardened alloy steel with anti-corrosion coating |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions | 120 mm x 45 mm x 30 mm |
| Operating Pressure | 12-18 bar (174-261 psi) |
| Temperature Range | -40°C to +120°C |
| Thread Size | M10 x 1.5 |
Compatibility
This OEM genuine part is primarily engineered for the ZF WG 160 series transmission family. It is also compatible with the WG 180 and WG 200 models that share the same hydraulic control architecture. The 4656.174.063 can be used in ZF WG 150 and WG 220 variants with identical valve body configurations. Always verify your transmission serial number before ordering, as minor revisions exist across production years.
Related Components
During installation of the 4656.174.063, several companion parts should be inspected and replaced if worn. The 4656201102: HOUS.FRONT SECT provides the mounting interface for this component. The 0631306816: CYLINDRICAL PIN ensures precise alignment during assembly. A 0750301002: FIXING PLATE secures the assembly, while 0636100817: CAP SCREW provides the necessary clamping force.
| Part Number | Name | Function |
|---|---|---|
| 4656201102 | HOUS.FRONT SECT | Front housing section for valve body |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for precise assembly |
| 0750301002 | FIXING PLATE | Retaining plate for hydraulic components |
| 0636100817 | CAP SCREW | Fastener for securing valve body |
| 4656301016 | SCREEN SHEET | Fine mesh filter for hydraulic fluid |
| 4656301017 | SCREEN SHEET | Coarse mesh pre-filter element |
| 0636100803 | CAP SCREW | M8 cap screw for auxiliary brackets |
| 0750301003 | OIL FEED.HOUSG. | Oil feed housing for lubrication circuit |
| 0736300233 | TORX SCREW | Torx-head fastener for valve body |
| 4656301023 | GASKET | Sealing gasket for hydraulic passages |
Frequently Asked Questions
Q: How do I know if the 4656.174.063 is the correct part for my WG160 transmission?
A: Verify your transmission model number stamped on the housing nameplate. This part fits WG160, WG180, and WG200 series with hydraulic valve bodies. If your transmission has a mechanical shift mechanism, this component will not be compatible.
Q: Can I replace the 4656.174.063 without removing the entire transmission?
A: Yes, this component is accessible after removing the transmission oil pan and valve body cover. However, we recommend replacing the 4656301023: GASKET and cleaning the 4656301016: SCREEN SHEET during the same service interval.
Q: What torque specification should I use for the cap screws securing this part?
A: Use 25 Nm (18.4 ft-lbs) for the 0636100817: CAP SCREW and 12 Nm (8.9 ft-lbs) for the 0736300233: TORX SCREW. Always use a calibrated torque wrench to prevent thread damage.
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Phone: +86 158 2286 3467 |
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