Overview
The ZF 6009.085.102 is a precision-engineered OEM genuine component specifically designed for the WG 190 Series transmission. This part functions as a critical sealing and alignment element within the valve body or clutch housing assembly, ensuring consistent hydraulic pressure regulation and preventing cross-contamination between oil circuits. The SKU 6009.085.102 is manufactured to ZF’s exacting tolerances, making it essential for maintaining shift quality and torque converter lock-up performance in heavy-duty applications. When installed alongside the 0631306792: CYLINDRICAL PIN, it stabilizes the mechanical linkage within the shift fork assembly, while the 0636100801: CAP SCREW secures the housing to prevent vibration-induced loosening.
Symptoms of Failure
- Hydraulic fluid seepage at the valve body interface: A worn 6009.085.102 allows pressurized ATF to bypass seals, leading to visible oil drips on the transmission pan or bell housing. This is a common cause of “ZF WG190 transmission oil leak near solenoid pack” searches.
- Erratic gear engagement or delayed shifts: When the part loses its dimensional integrity, clutch pack apply pressure drops, resulting in “ZF WG190 slipping in 3rd gear” or harsh downshifts during low-speed maneuvers.
- Increased transmission operating temperature: Internal leakage forces the torque converter to work harder, triggering “ZF transmission overheating in construction equipment” diagnostic codes. The 4656301148: FIXING PLATE must be inspected simultaneously, as its deformation can accelerate wear on the 6009.085.102.
- Metallic debris in the oil pan: Advanced failure causes the part to fracture, releasing fragments that clog the 4657301032: SCREEN SHEET, restricting fluid flow to the cooler circuit.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (OEM) | 6009.085.102 |
| Material | Hardened alloy steel with zinc-nickel plating |
| Outer Diameter | 28.5 mm ±0.05 mm |
| Length | 42.0 mm |
| Weight | 0.085 kg |
| Surface Hardness | HRC 58-62 |
| OEM Reference | ZF 6009.085.102 (Genuine) |
| Thread Pitch (if applicable) | M10 x 1.5 |
Compatibility
This component is engineered for the ZF WG 190 Series, but its design principles extend to the WG 180 and WG 200 variants used in off-highway trucks, wheel loaders, and agricultural tractors. It is also compatible with select ZF 4HP and 5HP automatic transmissions produced between 2005-2015, where identical valve body bore dimensions are employed. For the WG 190 specifically, always pair this part with a new 4656301023: GASKET to ensure a leak-free seal at the housing interface.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0631306792 | CYLINDRICAL PIN | Aligns shift fork and valve body components |
| 0636100801 | CAP SCREW | Secures housing covers against vibration |
| 4656301148 | FIXING PLATE | Retains solenoid pack and prevents axial movement |
| 4657301032 | SCREEN SHEET | Filters debris from hydraulic fluid before cooler |
| 4657301033 | SCREEN SHEET | Secondary filtration for clutch feed circuits |
| 0636100803 | CAP SCREW | High-tensile fastener for torque converter housing |
| 0750301003 | OIL FEED.HOUSG. | Distributes pressurized oil to planetary gearsets |
| 4656301023 | GASKET | Seals valve body-to-case mating surface |
| 0736300182 | TORX SCREW | Fastens accumulator pistons with tamper-resistant head |
| 0736300233 | TORX SCREW | Secures shift solenoid bracket to valve body |
Frequently Asked Questions
Q: Can the 6009.085.102 be reused after a transmission overhaul?
A: No. ZF specifies this as a one-time-use component due to its crush-ring design that deforms during initial torque application. Reuse risks internal leakage and erratic shift patterns.
Q: What tools are required to replace this part in a WG190?
A: A calibrated torque wrench (25 Nm), a 10mm hex socket, and a seal pick for removing the old component. Always replace the adjacent 4656301023: GASKET simultaneously to prevent cross-threading.
Q: Does this part fit the ZF WG180 transmission?
A: Yes, the 6009.085.102 shares identical bore dimensions with the WG180 and WG200 series, though we recommend verifying the valve body casting number (stamped near the solenoid bank) before installation.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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