| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes |
| Replace |
| NP231 Non-Synchro, NV231 |
| Complete Assembly Without Transfer Of Parts |
| Manual Trans | 1.3 | 1.2 | B | |
| Auto Trans | 1.1 | 1.0 | B | |
| NOTE |
| With Skid Plate, Add | 0.1 | 0.1 | B | |
| Complete Assembly With Transfer Of Parts |
| Manual Trans | 1.9 | 1.3 | B | Includes: R&I Transfer Case. |
| Auto Trans | 1.5 | 1.1 | B | Includes: R&I Transfer Case. |
| NOTE |
| With Skid Plate, Add | 0.1 | 0.1 | B | |
| New Process (NP-242) |
| Complete Assembly Without Transfer Of Parts |
| Manual Trans | 1.3 | 1.2 | B | |
| Auto Trans | 1.1 | 1.0 | B | |
| NOTE |
| With Skid Plate, Add | 0.1 | 0.1 | B | |
| Complete Assembly With Transfer Of Parts |
| Manual Trans | 1.9 | 1.3 | B | Includes: R&I Transfer Case. |
| Auto Trans | 1.5 | 1.1 | B | Includes: R&I Transfer Case. |
| NOTE |
| With Skid Plate, Add | 0.1 | 0.1 | B | |
| Overhaul/Rebuild |
| NP231 Non-Synchro, NV231 |
| Manual Trans | 5.2 | 3.8 | A | Includes: R&I Transfer Case. |
| Auto Trans | 5.2 | 3.6 | A | Includes: R&I Transfer Case. |
| NOTE |
| With Skid Plate, Add | 0.1 | 0.1 | A | |
| New Process (NP-242) |
| Manual Trans | 5.2 | 3.8 | A | Includes: R&I Transfer Case. |
| Auto Trans | 5.2 | 3.6 | A | Includes: R&I Transfer Case. |
| NOTE |
| With Skid Plate, Add | 0.1 | 0.1 | A | |