To Remove Side of Keyboard to Clean Cams.
The keyboard cams should be taken out and thoroughly cleaned every six or eight months and oiled with a drop of clock oil on the journal pin. This will prevent them from sticking and causing transposition of the matrices.
Fig. 22.
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.