Seals and Gaskets: Labor Times
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | ||||
| Case Cover Gasket | ||||
| 4 Speed, Hydramatic (M20) | ||||
| Transmission Shift Cover and/or Gasket | 3.6 | 2.6 | B | |
| Note | ||||
| To Overhaul Cover, Add | 0.5 | 0.3 | B | |
| Extension Housing Seal | ||||
| 4 Speed, Hydramatic (M20) | 0.9 | 0.6 | C | |
| Note | ||||
| To Replace Extension Bushing, Add | 0.2 | 0.1 | C |