Question

Jerky movement of the carriage is due to

1. Excess tension of main spring
2. Damage of dogs in the dog block
3. Damage of the tooth of escapement /pinion wheel
4. Accumulation of dirt on the carriage rack

• A. 2 only
• B. 3 only
• C. 1, 2, 3
• D. All

Answer 1

Answer:

C. 1, 2, 3

Jerky movement of the carriage is due to the following reasons

• Excess tension of main spring
• Damage of dogs in the dog block
• Damage of the tooth of escapement /pinion wheel