The 1380-70 Center Support Bearing is a critical component for maintaining the integrity of the driveshaft in Toyota Pickup 4X2 models from 1976 to 1978. With a bearing ID of 1.181″ and a center-to-base height of 1.750″, this bearing effectively supports a two-piece driveshaft at its midpoint. This configuration is essential for maintaining proper alignment and reducing driveline whip, which can lead to vibration and premature wear.
Engineers designed the 1380-70 to absorb vibration through its rubber isolator. A hardened or collapsed isolator can cause significant driveline vibration, which is often noticeable at highway speeds. Symptoms of failure include bearing noise and visible deterioration of the rubber. Proper installation is crucial; ensure that the rubber is not pre-loaded and that the mounting bracket is aligned before tightening. Additionally, checking the driveshaft runout during installation can help prevent future issues.
- Toyota Application: Fits Pickup 4X2 (76-78)
- 1.181″ Bearing ID for precise fit
- 1.750″ Center Bearing to Base height for optimal alignment
- 4.350″ Center to Center of Mount Holes for correct mounting
- Inspect rubber isolator for wear to avoid vibration
Overall, the 1380-70 Center Support Bearing is engineered to ensure reliable performance and longevity in your Toyota driveshaft system.
