Case, Extension Housing: Labor Times
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | ||||
| 136, 236, 246 | ||||
| Old Style | 0.8 | 0.5 | B | |
| New Style | 0.8 | 0.6 | B | |
| 241, 243 | ||||
| Old Style | 0.9 | 0.5 | B | |
| 1370, 4401 & 4470 | ||||
| Old Style | 0.8 | 0.5 | B |
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | ||||
| 136, 236, 246 | ||||
| Old Style | 0.8 | 0.5 | B | |
| New Style | 0.8 | 0.6 | B | |
| 241, 243 | ||||
| Old Style | 0.9 | 0.5 | B | |
| 1370, 4401 & 4470 | ||||
| Old Style | 0.8 | 0.5 | B |