Fig. 23.
Fig. 24.
The easiest way to take out the cams is to take off the back and front of the keyboard (Fig. 23). This is done by taking off the keyboard tray N (Fig. 23); then taking out screws I and A (Fig. 22) with the keyboard unlocked. The back, of course, comes off the same way. As these are dowelled, you would have no trouble in replacing them.
It will be found easier in putting them back if a small wire is run through the cam yoke triggers C (Fig. 31), locking them so they would enter the keyboard keybars B (Fig. 31) at point 3 (Fig. 31).
Figure 24 shows the keyboard with the front taken off, showing the keyboard keybars N in place and lower keyboard rod guide M.
The Distributer Box and Rails.
Figure No. 25 shows the distributer-box complete. The best way to take it apart to renew the rails B and C (Fig. 28) is to take out screws 1, 2 and 3 (Fig. 25) and take off side (Fig. 26).
The rails M and K (Fig. 26) and N and O (Fig. 27) have to be renewed when they have worn (as shown by dotted lines 1 and 2, Fig. 28) enough to allow two thin matrices to pass between points 1 and 2, rails C and B, and distributer-box bar pawl 3 (Fig. 28).