Change Length of Coupling Rod:
1. Loosen check nuts (6).
2. Lengthen coupling rod:
a. Turn rod (7) until lower frame (5) loses contact to the limit stop (4).
3. Shorten coupling rod:
a. Turn rod (7) until lower frame (5) rests on limit stop (4).
b. Fix check nuts (6).
Both adjustment procedures must be checked and/or fine-tuned until:
• you reach correct resting position (hs) ( Chapter #3)
• AND the upper frame (3) rests on limit stops (2)
• AND the lower frame (5) rests on limit stop (4).
By changing the length of the coupling rod, geometry of the
pantograph has been modified.
Check trend of static contact force ( Chapter #14.10).
Adjust static contact force, if necessary ( Chapter #14.9).
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