Replacing Broken or Bent Pedal Springs
Some people can go through their entire career and not worry about pedal springs, but if you move your organ frequently, you're bound to be disappointed when a carelessly placed box or foot bends or breaks a pedal spring. Pedal springs serve as the main interface between your pedalboard (klavier) and the instrument, they're those little metal L-shaped tabs that are screwed into the ends of your pedals. They're not difficult to fix, and this article will show you how. (NOTE: Remember that when you're working on your hammond, you're working on an expensive, and possibly very old, piece of electrical equipment. Use common sense and nobody will get hurt! This website cannot be responsible for damage to yourself or your instrument, and the info. provided herein is not warranted in any way)
First, Remove your Pedalboard
The correct way to do this is probably with two people, but a single determined person can do it without much fuss. The end of the pedalboard (the part that butts against the organ) needs to be lifted slightly, while pulling the assembly back, away from the organ. Refitting is the reverse of removal, as they say, lift the end slightly while gently pushing it (and the precious pedal springs) into and against the organ.
Next, remove the cover
There's a cover held in place by four screws that needs to be removed. (Note that in some cases the screw heads will be made of a fairly soft alloy. This can be a problem with a stubborn screw--be careful not to damage the screw head). The photo below shows the pedalboard with this cover removed.
Remove the pedal(s) needing attention
As you can see, we're missing a couple of pedal springs. Each pedal is fastened to a metal bar with two bolts, and the bar is then held in tension against the frame by another bolt. The nut can be removed, allowing the pedal to slide forward out of the frame. The pedal springs are connected to the other end of each pedal by two flathead screws. Remove these (gently) to detach the pedal spring. Keep track of what screws go where, and gently but securely attach the new pedal spring.
Closeup of my Eb pedal, with the pedal spring removed
Re-attach the pedals
Once you've replaced the springs, gently side each pedal back into the frame and reattach the nut. Be gentle so as not to tear or damage any felt in this process. Do not overtighten as you're reattaching the pedal, as this can have negative effects on the action. Once you've replaced your pedals, reattach the cover and your job is done.
Note If you're not sure what a pedal spring is, or where to find new ones, look here: b3guys.com.