Schunk Bahn- und Industrietechnik GmbH
Maintenance
Pan Head Suspension
The pan head suspension (leaf springs and parallel guide of rocker boxes) must be
checked for function, easy motion, deformation and corrosion.
Procedure:
1. Raise and fix pantograph at medium working height.
2. Press down both sliding strips with your hands and release them abruptly.
3. Repeat this procedure for several times.
Function and easy motion are proper:
If both sliding strips can be pressed down equally and
without jerky motion.
Both sliding strips spring back to their original position
when released.
4. Check pan head springs for deformation and corrosion.
NEVER raise pantograph pneumatically during replacement
of sliding strips.
Check if all pneumatic connections of the sliding strips are
connected properly AFTER replacement.
5. Lower pantograph.
6. Replace damaged leaf springs ( Chapter #17.2.8).
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