Seals and Gaskets: Labor Times
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | ||||
| NV1500/NV3500/NV3550 | ||||
| Extension Housing Seal | 0.8 | 0.5 | C | |
| Input Shaft Seal | 0.5 | 0.0 | B | After Trans Is Removed. |
| NV4500, NV4500HD | ||||
| Extension Housing Seal | 0.8 | 0.5 | C | |
| Input Shaft Seal | 2.9 | 0.0 | B | |
| NOTE | ||||
| With Skid Plate, Add | 0.4 | 0.2 | B | |
| With Two Piece Drive Shaft, Add | 0.4 | 0.2 | B | |
| With Dual Exhaust, Add | 0.5 | 0.3 | B |