Heater Core: Labor Times
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | ||||
| Main Unit | 2.0 | 1.1 | B | |
| NOTE | ||||
| To Pressure Test Core, Add | 0.4 | 0.3 | B | |
| Auxiliary Unit | 2.1 | 1.7 | B | |
| NOTE | ||||
| To Pressure Test Core, Add | 0.4 | 0.3 | B |
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | ||||
| Main Unit | 2.0 | 1.1 | B | |
| NOTE | ||||
| To Pressure Test Core, Add | 0.4 | 0.3 | B | |
| Auxiliary Unit | 2.1 | 1.7 | B | |
| NOTE | ||||
| To Pressure Test Core, Add | 0.4 | 0.3 | B |