562 Replacement Of Components

5-63. TONE GENERATOR ASSEMBLY

5-64. Remove the four hexagonal-head bolts and their associated springs and T-washers which

Hammond Organ Remove Preset Panel Screws

secure the generator assembly to the console.

5-65. Remove the four screws from the left and right-hand side panels of the music rack. Tilt the bottom of the music rack by lifting the side panels, and remove the rack by pulling outward.

5-66. Remove the 4 chassis bolts (underneath the console) and the 2 machine screws (under the front lower manual rail) that hold the entire manual chassis in place.

5-67. Disconnect the 79 manual leads, 68 pedal leads, 4 ground wires, and the pedal filter leads. The pedal filter is located on the rear surface of the upper manual assembly.

5-68. Pull out all drawbars to position 8, and then tilt the manual chassis from the front as far as the top of the console will permit. Place suitable wedges or blocks on both sides of the manual chassis to hold it in this position. The manual chassis must be tilted to provide adequate clearance for the bolts in the corners of the main generator assembly.

5-69. Unhook the four suspension springs on which the generator assembly rides.

5-70. Lift up the generator assembly and remove it at the rear of the console.

5-71. Install a replacement generator assembly by reversing the procedure given above for removing it.

5-72. MIXING TRANSFORMER ASSEMBLY. The Assembly of two mixing transformers is provided complete with all leads to the preset panels, and can be removed as follows:

a. Remove the rear panel, b. Remove the two screws which secure the transformer cover in place.

c. Label and disconnect all leads from the mixing transformers where they connect to the preset panels.

d. Unsolder green and yellow shielded wires at mixing transformers.

e. Remove the two wood screws which secure the mixing transformer assembly to the manual chassis block.

f. Secure the replacement mixing transformer assembly in place by reversing the procedures given above.

5-73. PLAYING KEY.

5-74. Replacement of playing key on upper manual will be accomplished as follows:

a. Remove the four screws from the left and right-hand side panels of music rack. Tilt the bottom of the rack by lifting the side panels and then remove the rack by pulling outward.

b. Remove the 2 wood screws and the 2 oval-head bolts from the ends of the drawbar base.

c. Lift and block up the entire drawbar base.

d. To remove a black key, loosen its key mounting screw, unhook key from screw, and lift out key.

e. To remove a white key, loosen its key mounting screw and those of adjacent black keys. Unhook these keys from screws, push them back, and lift out white key.

f. Insert a replacement key and install by reversing the directions given above for removal.

g. Adjust the tension of the replacement playing key by comparison with the adjoining key.

5-75. Replacement of playing key on lower manual will be accomplished as follows:

a. Remove the four screws from the left- and right-hand side panels of the music rack. Tilt the bottom of the rack by lifting the side panels and then remove the rack by pulling outward.

b. Remove the two oval-head bolts from the ends of the stop base.

c. Pull out all drawbars to position 8.

d. Tilt the upper manual as far back as the top of the console will allow, and then wedge or block it in this position.

e. Complete the replacement of the playing key on the lower manual by following the same procedure given above for upper manual keys.

5-76. PEDAL SWITCH ASSEMBLY.

5-77. Replacement of pedal switch assembly will be accomplished as follows:

a. Remove the pedal clavier by lifting it up in front and then pulling straight back. (See figures 1-3 and 3-1.)

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