NAMCO ACE DRIVER DELUXE, Operator'S Manual

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6) When replacing the timing belt, fit to the motor gear first. If the belt is
forced, it could damage the belt or motor.
7) Set the belt tension using the socket head bolt (M6x25). The tension
should be set so that the belt moves about 2-3mm when a force of 500g is
applied to the belt between the pulleys. (The tension of the belt is 7-9kg.)
8) After setting the tension, tighten the locking nut (M6), to prevent the socket
head bolt (M6x25) from moving, and the four hex head bolts (M8x16).
6-5-5. Replacing the Motor and Motor Brush
1) Replacing the Motor
a) Remove the timing belt. ( Refer to section 6-5-4 , "Replacing the Timing
Belt".)
b) Remove the locking nut (M6), the socket head bolt (M6x25), and the
four hex head bolts (M8x16). Disconnect the connector and remove the
motor.
c) Remove the four Whizz nuts (M5), and remove the motor from the
mounting plate.
2) Replacing the Motor Brush
a) Remove the motor . (See steps a and b of replacing the motor.)
b) Remove the brush cover by sliding it towards the back of the motor.
Replace the brush and cap.
Note: When replacing the brush, ensure that the brush slides in to the
motor without binding.