Overview
This genuine ZF 4130.306.192 bushing is a critical wear component engineered for the internal oil pump drive assembly within heavy-duty construction machinery transmissions. Positioned precisely within the torque converter housing, this bushing supports the rotating shaft of the oil pump, ensuring consistent hydraulic pressure for clutch engagement and gear shifts. As an OEM genuine part, the SKU 4130.306.192 guarantees exact dimensional tolerances and material composition required for high-load, low-speed applications. Without this bushing functioning correctly, the transmission cannot maintain the necessary lubrication flow, leading to rapid degradation of planetary gearsets.
Symptoms of Failure
When the ZF 4130.306.192 bushing wears beyond specification, operators will notice distinct operational issues. The most common failure symptom is a low oil pressure warning light accompanied by erratic shifting, particularly when the transmission is under load during excavation or grading. Another clear indicator is a high-pitched whining noise emanating from the bell housing area, which intensifies as engine RPM increases. You may also observe intermittent gear slippage in forward gears, especially after the transmission reaches operating temperature. Finally, check for metallic debris in the transmission fluid during routine sampling—this confirms the bushing’s bearing surface has begun to flake.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4130.306.192 |
| Inner Diameter | 38.10 mm (1.500 in) |
| Outer Diameter | 44.45 mm (1.750 in) |
| Length | 31.75 mm (1.250 in) |
| Material | Phosphor bronze with PTFE overlay |
| Weight | 0.12 kg (0.26 lbs) |
| OEM Reference | ZF 4130.306.192 |
| Hardness | HRB 80-90 |
Compatibility
This bushing is specifically designed for ZF’s WG180, WG200, and WG210 series transmissions commonly found in wheel loaders, backhoes, and telescopic handlers. It also fits select Ecomat 2 and Ecomat 4 models produced between 2005 and 2018. For exact fitment verification, cross-reference your transmission serial number with the OEM parts catalog. This part is not compatible with the ZF 6HP or 8HP automotive-style transmissions used in on-highway trucks.
Installation Notes
- Always replace the corresponding oil pump seal (part number 4130.306.190) simultaneously.
- Pre-lubricate the bushing bore with clean transmission fluid before assembly.
- Use a bushing driver tool to avoid distorting the thin wall during installation.
