JRC JMR-92 Series Field Service Manual page 398

Step 4 Replace the motor.
Remove the hexagonal bolts (four M6 bolts) and remove the motor. Grease the gear wheel of
the replacement motor and place it in the casing. Do not forget to tighten the hexagonal bolts to an
appropriate torque (72 kgf-cm) so they are free of looseness.
After having replaced the motor, reassemble the unit by following the disassembly procedure in
the reverse order. Do not forget to tighten the bolts or screws, and do not forget to reconnect the
cables.
Clamp the cables so they do not interfere with the rotation of the motor's rotors.
Step 5 Operation check
After completing the replacement work, close the cover, turn On the safety switch and check
operation by following the procedure below.
(1) Turn On the Display unit. After the countdown is completed, start transmission and check
that the radar image appears without error. Check that the motor does not make any
abnormal sound when it starts to rotate, while it is rotating, or when it stops.
This completes motor replacement.
Chapter 4 Replacement procedure 4-178