The Breitling Navitimer, a horological icon synonymous with aviation history and sophisticated design, is a prized possession for many watch enthusiasts. However, even the most robust timepieces can experience malfunctions, and a non-functional chronograph is particularly frustrating. This comprehensive guide addresses the issue of a non-working stopwatch function on your Breitling Navitimer, providing step-by-step troubleshooting advice, resources, and considerations for repair. Whether you're a seasoned watchmaker or a novice owner, this article will equip you with the knowledge to diagnose and, potentially, resolve the problem.
Understanding the Navitimer Chronograph Mechanism:
Before diving into troubleshooting, it's crucial to understand the complexities of the Navitimer's chronograph movement. These movements are intricate mechanical systems, often featuring hundreds of individual components working in precise harmony. The chronograph function, responsible for measuring elapsed time, involves a separate mechanism that interacts with the main timekeeping movement. Malfunctions can stem from various sources, ranging from simple issues like a jammed pusher to more complex problems requiring professional intervention.
I. Diagnosing the Problem: Is it the Stopwatch or Something Else?
Before assuming the chronograph is faulty, rule out other potential issues:
* Power Reserve: Ensure your Navitimer is fully wound. A low power reserve can affect the chronograph's operation. Manually wind the watch using the crown and observe if the chronograph starts functioning.
* Pusher Functionality: Examine the chronograph pushers (typically at 2 and 4 o'clock). Are they smooth and responsive? A stiff or unresponsive pusher indicates a potential mechanical obstruction or wear. Try gently operating each pusher several times. Listen for any unusual clicks or grinding sounds.
* Hand Alignment: Observe the chronograph hands (seconds, minutes, and sometimes hours). Are they correctly aligned at zero when the chronograph is stopped? Misalignment could indicate a problem with the reset mechanism.
* Timekeeping Accuracy: Assess the accuracy of the main timekeeping function. If the watch is significantly gaining or losing time, this could indirectly affect the chronograph's performance. A faulty mainspring or escapement could impact the chronograph's operation.
II. Troubleshooting Steps: A DIY Approach
Disclaimer: Attempting repairs yourself carries risks. Improper handling can cause further damage to your valuable watch. If you are uncomfortable with any of the following steps, consult a professional watchmaker.
A. Cleaning the Pushers:
* Preparation: Gather a soft-bristled brush (like an old toothbrush), compressed air (optional), and a magnifying glass.
* Procedure: Gently brush around the chronograph pushers to remove any dust or debris that might be obstructing their movement. Use compressed air cautiously to blow away any loose particles. Avoid excessive force.
B. Inspecting for Obstructions:
* Magnification: Use a magnifying glass to carefully examine the pushers and the surrounding case area for any visible obstructions.
* Observation: Look for any bent or broken components. Note any unusual wear or damage.
C. Lubrication (Advanced):
* Caution: This step is highly discouraged unless you have extensive experience with watch repair. Incorrect lubrication can severely damage the movement.
* Procedure: Only if you are confident and possess the necessary tools and lubricants, you might attempt to lubricate the pushers with a very small amount of appropriate watch oil. Use only specialized watch lubricants.
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