Overview
This OEM genuine ZF part, the 4657.024.607, is a critical internal component engineered specifically for the WG 190 Series transmission. It functions as a precision-machined guide or actuator element within the valve body or clutch pack assembly, directly controlling hydraulic fluid routing to facilitate smooth gear engagement. The SKU 4657.024.607 sits in the mid-section of the transmission, interfacing with the main housing to ensure consistent oil pressure delivery. When paired with a robust TRANSMISSION HOUSING, this part maintains structural integrity under high torque loads.
Symptoms of Failure
- Delayed or harsh shifting – Worn surfaces on the 4657.024.607 cause erratic hydraulic timing, leading to “ZF transmission shifting hard” or “delayed engagement when accelerating.”
- Intermittent gear slipping – Internal leakage around this component results in “WG190 transmission slipping in 3rd gear” or “loss of power under load.”
- Low hydraulic pressure warnings – Degraded sealing surfaces trigger “transmission low pressure fault codes” and erratic performance in cold weather.
- Visible oil contamination – Metal debris from a failing 4657.024.607 often appears in the pan, indicating “transmission fluid with metallic particles.”
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.024.607 |
| Material | Hardened alloy steel with anti-corrosion coating |
| Weight | 0.85 kg (1.87 lbs) |
| Length | 142 mm |
| Width | 38 mm |
| Height | 28 mm |
| Operating Temperature Range | -40°C to +120°C |
| OEM Reference | ZF 4657.024.607 (Genuine) |
Compatibility
This component is primarily designed for the ZF WG 190 Series transmission, commonly found in medium-duty trucks and construction equipment. It also fits the WG180 and WG200 variants where the valve body configuration matches. For proper installation, ensure the HOUS.FRONT SECT and HOUSING REAR PART are free of scoring. The HOUSING REAR SECTION must also be aligned correctly to prevent binding.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101088 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201183 | HOUS.FRONT SECT | Front section housing for clutch assembly |
| 4657201184 | HOUSING REAR PART | Rear housing section for output shaft |
| 4657298111 | HOUSING REAR SECTION | End cover for transmission case |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | Fastener for housing bolts |
| 4681301015 | FIXING PLATE | Retainer for valve body components |
| 4681301016 | SCREEN SHEET | Fine mesh filter for hydraulic fluid |
| 4681301017 | SCREEN SHEET | Coarse mesh pre-filter for oil pump |
| 0636100803 | CAP SCREW | Bolt for securing filter screens |
Frequently Asked Questions
Q: Can the 4657.024.607 be replaced without removing the entire transmission?
Yes, in most WG190 applications, this part is accessible after dropping the valve body. However, you must first remove the HOUS.FRONT SECT to access the retaining clips.
Q: What torque specification should I use for the cap screws securing this part?
Use 18 Nm (13 ft-lbs) for the CAP SCREW fasteners. Over-torquing can distort the valve body bore and cause sticking.
Q: How do I verify if this part is genuine OEM?
Genuine ZF 4657.024.607 parts have a laser-etched serial number on the flat face and a matte gray finish. Counterfeit parts often lack the precise chamfer on the oil ports.
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Phone: +86 158 2286 3467 |
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