Overview
The ZF 6006.026.065 FS DW 1 for WG180 is an OEM genuine part engineered to function as a critical actuation component within the WG 180 transmission series. This part, identified by SKU 6006.026.065, directly controls the engagement and disengagement of specific gear sets, ensuring precise power flow through the drivetrain. It sits within the shift mechanism assembly, interfacing with the 4644159347: SHIFT SYSTEM to deliver reliable, repeatable shifts under heavy load conditions. Without this component, the transmission cannot maintain proper gear selection, leading to operational inefficiency.
Symptoms of Failure
- Delayed or harsh gear engagement: When the 6006.026.065 wears, you may experience a noticeable lag or a jarring thud when shifting between forward and reverse gears, especially under load.
- Intermittent gear slipping: A worn FS DW 1 component can cause the transmission to unexpectedly slip out of gear during operation, resulting in a loss of torque and potential safety hazards.
- Internal hydraulic pressure loss: Deterioration of this part often leads to internal leakage, which manifests as erratic shift timing or a complete inability to engage a specific gear range.
- Unusual metallic noise from the shift housing: As the part degrades, you may hear grinding or clicking sounds originating from the area around the 4644306511: GEAR SHIFT HOUSING, indicating mechanical interference.
Technical Specifications
| Specification | Detail |
|---|---|
| OEM Part Number | 6006.026.065 |
| Designation | FS DW 1 (Freewheel / Shift Dog 1) |
| Material | Case-hardened alloy steel with anti-corrosion coating |
| Estimated Weight | 1.2 kg (2.65 lbs) |
| Overall Length | 185 mm |
| Spline Diameter | 32 mm |
| OEM Reference | ZF 6006.026.065 |
| Sealing Interface | Requires 0634306323: O-RING for proper installation |
Compatibility
This genuine ZF part is primarily designed for the WG 180 Series transmissions, which are widely used in heavy-duty construction and agricultural machinery. It is also compatible with the WG 200 Series and select variants of the WG 160 Series where the shift dog configuration matches. The part integrates directly with the 4644101249: TRANSMISSION HOUSING and the 4644301402: TRANSMISSION HOUSING to form a sealed, robust shift assembly. Always verify your transmission model number before ordering, as the 4644301298: COVER PLATE must also match the housing variant.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101249 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4644301402 | TRANSMISSION HOUSING | Alternate housing variant for WG180 |
| 4644301298 | COVER PLATE | Seals the shift mechanism access port |
| 0634306323 | O-RING | Hydraulic seal for shift dog interface |
| 0636305026 | SCREW PLUG | Closes oil passages during service |
| 4644301279 | SCREEN SHEET | Filters debris from hydraulic fluid |
| 4644301088 | SEALING CAP | Protects shift rod from contamination |
| 4644159347 | SHIFT SYSTEM | Complete shift actuator assembly |
| 4475280036 | SCREW-IN SLEEVE | Bearing surface for shift fork |
| 4644306511 | GEAR SHIFT HOUSING | External housing for shift mechanism |
