Detroit Series 60 12.7 Valve Adjustment Chart
The Detroit Series 60 12.7 is a popular engine used in many heavy-duty trucks and buses. The engine is known for its durability, reliability, and power. However, like all engines, it requires regular maintenance to keep it running smoothly. One important aspect of maintenance is valve adjustment.
What is Valve Adjustment?
Valve adjustment is the process of setting the clearance between the valve stem and the rocker arm. This clearance affects the engine's performance and can cause problems if it is not set correctly. If the clearance is too tight, the valve may not fully close, which can cause loss of power and increased engine wear. If the clearance is too loose, the valve may not fully open, which can also cause loss of power and increased engine wear.
Why is Valve Adjustment Necessary?
Valve adjustment is necessary because the clearance between the valve stem and the rocker arm can change over time due to wear and thermal expansion. If the clearance is not adjusted, it can cause problems such as loss of power, increased engine wear, and even engine damage.
How Often Should Valve Adjustment be Done?
The frequency of valve adjustment varies depending on the engine and the manufacturer's recommendation. For the Detroit Series 60 12.7, valve adjustment should be done every 100,000 miles or every 2,000 hours of operation.
How to Perform Valve Adjustment on Detroit Series 60 12.7?
Performing valve adjustment on Detroit Series 60 12.7 requires some knowledge and experience. It is recommended to have a professional mechanic perform the task. However, if you are familiar with engines and have the necessary tools, you can perform the valve adjustment by following the steps in the valve adjustment chart.
Detroit Series 60 12.7 Valve Adjustment Chart
Here is the valve adjustment chart for Detroit Series 60 12.7:
| Cylinder | Intake Valve Lash (in) | Exhaust Valve Lash (in) |
|---|---|---|
| 1 | 0.014 | 0.027 |
| 2 | 0.027 | 0.014 |
| 3 | 0.014 | 0.027 |
| 4 | 0.027 | 0.014 |
| 5 | 0.014 | 0.027 |
| 6 | 0.027 | 0.014 |
| 7 | 0.014 | 0.027 |
| 8 | 0.027 | 0.014 |
| 9 | 0.014 | 0.027 |
| 10 | 0.027 | 0.014 |
| 11 | 0.014 | 0.027 |
| 12 | 0.027 | 0.014 |
Conclusion
Valve adjustment is an important aspect of engine maintenance. It ensures that the engine runs smoothly and avoids problems such as loss of power and increased engine wear. For the Detroit Series 60 12.7 engine, valve adjustment should be done every 100,000 miles or every 2,000 hours of operation. If you are not familiar with engines, it is recommended to have a professional mechanic perform the task.
