Overview
The ZF 0501.209.037 is a critical OEM genuine component engineered specifically for the WG100 and WG110 series transmissions. This part functions as a precision-machined guide or bushing element within the hydraulic control assembly, ensuring accurate oil flow and pressure regulation during gear shifts. As a direct replacement for the SKU 0501.209.037, it restores the transmission’s ability to maintain consistent clutch engagement and torque converter lock-up. When installed alongside a 4651101007: TRANSMISSION HOUSING, it creates a sealed environment that prevents cross-contamination of hydraulic circuits. This part is often replaced during a full overhaul of the valve body or when addressing shift quality issues in heavy-duty applications.
Symptoms of Failure
- Erratic shift timing and gear hunting: A worn 0501.209.037 can cause the transmission to delay shifts or hunt between gears under load, particularly in WG100 and WG110 units operating in construction equipment.
- Low hydraulic pressure at idle: Internal leakage past this component leads to a drop in line pressure, resulting in soft clutch engagement and eventual slipping during acceleration.
- Oil contamination from metallic debris: As the part wears, fine metal particles enter the hydraulic fluid, which can clog the 4651203002: SCREEN SHEET and accelerate wear on other valve body components.
- External seepage near the housing joint: Degraded sealing surfaces allow ATF to weep past the 0634303928: O-RING, leaving visible drips on the transmission casing.
Technical Specifications
| Specification | Detail |
|---|---|
| OEM Part Number | 0501.209.037 |
| Material | Hardened steel with corrosion-resistant coating |
| Outer Diameter | 38.0 mm |
| Inner Diameter | 22.5 mm |
| Length | 45.0 mm |
| Weight | 0.18 kg |
| OEM Reference | ZF 0501.209.037 (Genuine) |
| Sealing Surface | Ground finish, Ra ≤ 0.4 µm |
Compatibility
This genuine ZF part is designed for the WG100 and WG110 transmission series, commonly found in off-highway vehicles, wheel loaders, and industrial forklifts. It is also compatible with the WG180 and WG200 series when used in the same hydraulic control module. For proper sealing, always replace the 0634303928: O-RING and inspect the 4651301029: HOUSING for scoring. In WG110 applications, verify alignment with the 4651301024: HOUSING to avoid installation errors.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101007 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4651301029 | HOUSING | Valve body housing for hydraulic control |
| 0634303928 | O-RING | Static seal for hydraulic passages |
| 4651301024 | HOUSING | Intermediate housing for clutch pack |
| 4651203002 | SCREEN SHEET | Fine mesh filter for oil intake |
| 4651303005 | SCREEN SHEET | Secondary filter for valve body |
| 0636101032 | CAP SCREW | Fastener for housing assembly |
| 0630361028 | SEALING CAP | Port plug for test points |
| 4475280060 | SCREW PLUG | Threaded drain plug |
| 0634303312 | O-RING | Seal for screw plug |
Frequently Asked Questions
Q: Can the 0501.209.037 be reused during a rebuild?
A: No. ZF specifies this as a one-time-use component due to its interference fit and surface finish requirements. Always install a new OEM genuine part along with a fresh 0634303928: O-RING to guarantee sealing integrity.
Q: How do I know if my WG100 needs this part?
A: If you observe erratic shifting combined with metallic debris on the 4651203002: SCREEN SHEET, the 0501.209.037 is likely worn. A pressure test showing below-spec readings at the clutch tap confirms the diagnosis.
Q: Is this part compatible with the ZF WG180?
A: Yes, the 0501.209.037 is used in the same hydraulic circuit on WG180 models. However, always verify the 4651301024: HOUSING bore condition before installation, as scoring can cause premature failure.
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Phone: +86 158 2286 3467 |
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