When it comes to farming equipment, few models are as iconic as the 1972 Massey Ferguson 135 Diesel. This tractor was first introduced in the late 60s and quickly became popular among farmers for its reliability and versatility. As with any piece of machinery, however, the wiring system can sometimes experience issues. In this article, we’ll be exploring the wiring diagram for the 1972 Massey Ferguson 135 Diesel, as well as providing some troubleshooting tips for common problems.
Understanding the Wiring Diagram
Before we dive into common electrical problems, it’s important to have a basic understanding of the wiring diagram for the 1972 Massey Ferguson 135 Diesel. The diagram is divided into two parts – the first focusing on the ignition system and the second on the lighting system. Each part has multiple sub-systems, with individual wires and components labeled for easy reference.
It’s worth noting that the wiring diagram can vary slightly depending on the specific model and year of your tractor. However, the basics should be similar enough for most owners to follow along.
Ignition System
The ignition system of the 1972 Massey Ferguson 135 Diesel is made up of several sub-systems, including the battery, starter motor, alternator, and distributor. The wiring diagram clearly labels each wire and component, making it easy to trace any potential issues.
For example, if you’re experiencing issues with the starter motor not turning over, you can use the diagram to identify the wire that connects it to the battery. From there, you can check for any breaks or damage that may be preventing power from reaching the motor.
It’s also worth noting that the wiring diagram includes information on the various switches and relays that are used to control the ignition system. This is particularly useful when troubleshooting issues related to the key switch or solenoid.
Lighting System
The lighting system for the 1972 Massey Ferguson 135 Diesel is similarly divided into multiple sub-systems. This includes the headlights, taillights, turn signals, and instrument panel lighting.
Again, each wire and component is labeled clearly on the wiring diagram, making it easy to track down any issues. For example, if you’re experiencing a problem with a specific light not working, you can use the diagram to identify the wire that connects that light to the rest of the system. From there, you can check for any breaks or damage that may be affecting the circuit.
Common Electrical Problems
Now that we have a basic understanding of the 1972 Massey Ferguson 135 Diesel wiring diagram, let’s take a look at some of the most common electrical problems that owners may experience.
Dead Battery
One of the most common issues with any vehicle is a dead battery. In the case of the Massey Ferguson 135 Diesel, this can often be caused by a faulty alternator or a parasitic drain on the battery.
To test the alternator, you can use a multimeter to check the voltage output while the engine is running. If the output is lower than the recommended range, it may be time to replace the alternator.
If the alternator is working correctly, the next step is to check for any parasitic drains on the battery. This can be caused by a faulty switch or relay that is drawing power even when the ignition is turned off.
Starter Motor Issues
As mentioned earlier, issues with the starter motor are another common problem for Massey Ferguson 135 Diesel owners. This can be caused by a number of factors, including a faulty solenoid, damaged wiring, or a dead battery.
To troubleshoot starter motor issues, start by checking the battery voltage with a multimeter. If the voltage is low, it may be time to charge or replace the battery. If the battery is working correctly, check the wiring and solenoid for any damage or wear.
FAQ
| Question | Answer |
|---|---|
| How do I check the voltage output of the alternator? | Use a multimeter to measure the voltage at the alternator output while the engine is running. The output should be within the recommended range for your specific model. |
| How do I test the solenoid? | Use a multimeter to test the continuity of the solenoid circuit. If there is no continuity, the solenoid may be faulty and need to be replaced. |
| What should I do if my lights aren’t working? | Check the wiring and bulbs for any damage or wear. If those are both fine, check the switches and relays that control the lights. |
Conclusion
The 1972 Massey Ferguson 135 Diesel is a reliable and versatile tractor that has been popular among farmers for decades. However, as with any piece of machinery, the wiring system can sometimes experience issues. By understanding the wiring diagram and troubleshooting common problems, owners can keep their tractors running smoothly for years to come.
