JRC JMA-5312-6 Instruction Manual page 403

(4) Loosen the bolts (five M5 bolts) and remove the
transmitter-receiver unit. Slide the
transmitter-receiver unit upward to remove it.
(5) 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
loose
(6) After having replaced the motor, reassemble the unit by following the disassembly procedure in the
reverse order.
Do not forget to tighten the bolts and 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.
8.4 Replacement of Major Parts
Slide the unit.
Loosen the five
bolts.
8-26
Remove the
four bolts.
8