COBHAM SEA TEL 9711IMA-70, Installation Manual

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Maintenance 9711IMA-70
15-18
4. Install the washer and locking nut onto
the threads of the pot, but do not tighten.
5. Apply Loctite 638 (Green) to the shaft of
the potentiometer.
6. Install the sprocket (in the correct
orientation as observed in step 2 above)
on the potentiometer shaft.
7. Apply Loctite 222 (Pink) to the set screw
and tighten the Allen set screw.
8. Place the replacement pot down into the
large hole in the slot of the bracket.
9. Slide the pot into the slot so that the
bracket is captured between the body of
the pot (above) and its washer & locking
nut (below).
10. Orient the body of the pot such that the
wire connections will be outward from
the body of the feed assembly.
11. Plug the IDC connector into the Motor
Termination PCB (refer to drawing
134868 page 2 wiring diagram).
12. Refer to “Linear Feed Calibration
Procedure” to calibrate the circular
section of the feed assembly.
15.4.12. Linear Motor Replacement Procedure:
The feed assembly does not need to be recalibrated as long as the potentiometer has not been replaced,
disengaged or removed from its mounting location.
After you have ascertained that the circular section potentiometer is failed:
1. Using your 3mm Allen wrench, remove
the two mounting screws and remove the
motor assembly.
2. Note orientation of the drive sprocket on
the motor shaft. Loosen the Allen set
screw from, apply heat to soften Loctite
between sprocket and shaft and remove
the sprocket from the motor shaft. Save
the sprocket for re-installation.
3. Unplug the IDC connector from the
Motor Termination PCB.
4. From the underside of the bracket,
remove the screws that mount the failed
motor to its bracket.
5. Install the replacement motor on the
bracket using the screws removed in the
previous step.
6. Orient the body of the motor such that
the wire connections will be outward
from the body of the feed assembly.
EAR Controlled - ECCN EAR99