Never work on the mechanism unless the closing and opening springs are fully discharged.
This manual details the exact milliseconds for contact travel. For the 170D1 B variant, look for the specific and closing time . A variance of just 2ms here can lead to restrike faults. ltb 72.5-170d1 b manual
Figure 2-1. Controls and Indicators
If you are looking for specific details, I can help you with: for the FSA 1 mechanism. Maintenance schedules and recommended spare parts. Comparison with newer vacuum-based alternatives. Never work on the mechanism unless the closing
2-1. General 2-2. Description 2-3. Data 2-4. Location and Description of Controls and Indicators 2-5. Operation Under Usual Conditions 2-6. Operation Under Unusual Conditions 2-7. Troubleshooting Malfunctions A variance of just 2ms here can lead to restrike faults
This report contains technical data whose export and disclosure is restricted by the International Traffic in Arms Regulations (ITAR) or the Export Administration Regulations (EAR). Dissemination is limited to U.S. Government agencies and their contractors and to qualified U.S. citizens for evaluation purposes only. Any other dissemination or disclosure requires prior approval from the releasing authority.