TM 55-4920-227-15
c.
Installation.
c.
Installation.
(1) Position the transformer (16) on the control
(1) Install the transformer (27) on the front of
panel (6) and secure with four screws (15).
the control panel (6) and secure to the rear
Install the screw lock wires.
of the panel with four nuts.
(2) Connect the tagged electrical leads to the
(2) Aline the control panel (6) in the starter box
terminals of the transformer (16).
(5) and secure with six screws (4). Install
(3) Connect the power input source.
the lock wires.
(3) Position the terminal board (28) on the studs
(29) and secure with two nuts (30).
71. Fuse and Fuse Block
a. Removal.
(4) Connect the tagged leads to their respective
(1) Disconnect the input power source.
terminals on the terminal board (28).
(2) Tag and disconnect the leads from the
(5) Connect the power input source.
terminals of the fuse block (18, fig. 22).
(3) Remove two screws (17) and remove the
73. Terminal Blocks
fuse block (18) from the control panel (6).
a. Removal.
(4) Remove the fuse (21) from the fuse block
(1) Disconnec t the input power source.
(18).
(2) Tag and disconnect leads from the terminal
b. Installation. Reverse the procedures in a above.
block (22, fig. 22).
(3) Remove lock wires and remove the two
screws (23) that secure the terminal block
72. Auto Transformer
a. Removal.
(22) to the control pan (6). Remove the
(1) Disconnect the input power source.
terminal block.
(2) Tag and disconnect the leads from the
(4) Remove the terminal blocks (14, 24, and 26)
terminal-board (28, fig. 22).
in the same manner.
(3) Remove two nuts (30) from studs (29), and
b. Cleaning and Inspection.
remove the terminal board (28) from the
(1) Clean all parts with an approved cleaning
transformer (27).
solvent.
(4) Remove the lock wires and remove the six
(2) Inspect the terminal blocks for cracks,
screws (4). Tilt the control panel (6) forward
breaks, damaged terminals, and corrosion.
until the four nuts that secure the
Replace if defective.
transformer (27) to the rear of the control
(3) Inspect all hardware for cracks, breaks, and
panel are accessible. Remove the four nuts,
damaged threads. Replace if defective.
and remove the transformer (27) from the
c. Installation.
control panel (6).
(1) Position the terminal block (22) on the
b. Cleaning and Inspection.
control panel (6) and secure with two screws
(1) Clean all parts with an approved cleaning
(23). Install lock wires.
solvent.
(2) Connect the tagged leads to their respective
(2) Inspect the transformer for burned, brittle, or
terminals of the terminal block (22).
frayed insulation. Check the transformer for
(3) Install the terminal blocks (14, 24, and 26) in
continuity. Replace if defective.
a similar manner.
(3) Inspect the terminal board and hardware for
(4) Connect the power input source.
cracks, breaks, and damaged threads.
Replace if defective.
AGO 6729A
51
