Section III. ADJUSTMENTS, ALIGNMENT, REPAIR, REMOVAL AND REPLACEMENT

TM 11-6660-204-25

Figure 4-15. Control Panel C-834/TMQ-5, Front View.

Section

Ill.

ADJUSTMENTS, ALIGNMENT, REPAIR,

REMOVAL,

AND REPLACEMENT

4-10. Removal and Replacement of Chart

(5) Remove the chart drive motor studs.

Drive Motor

(6) Loosen the two Allenhead setscrews (fig.

4-17) from the chart drive motor pinion gear and pull

a. Removal.

the pinion gear free of the motor shaft.

(1) Remove the frequency-time recorder chassis

(7) Remove the chart drive motor from the

from the cabinet.

frequency-time recorder chassis.

(2) Remove the chart drive motor connecting

b. Replacement. Install a new chart drive motor as

leads from the terminal board (fig. 4-16).

follows:

(3) Secure the chart drive mechanism gears with

(1) Install the chart drive motor in its brackets

masking tape to prevent the gears from separating

in the frequency-time recorder chassis. Be sure that

the pinion gear meshes properly with the other chart

(4) Remove the three nuts and washers (fig.

drive mechanism gears.

4-17) that hold the chart drive motor to the mount-

(2) Install the motor studs. Secure the motor

ing plate.

with the three nuts and lockwashers.

NOTE

(3) Tighten the two Allenhead setscrews on the

Remove only the three accessible nuts. Do

pinion gear.

not attempt to remove the inaccessible

(4) Remove the masking tape. Remove any resi-

nut as it is the only thing holding the mo-

due from the masking tape from around the gear

tor together when the other nuts are re-

assembly.

moved.

Change 3