Installation; Installing The Motor To The Work Table; Attatching The Belt - Brother MD-602 Service Manual

5. Installation

Do not use the motor near sources of strong electrical interference. If the motor is installed in a location which
is close to sources of strong electrical interference such as high-frequency welders, it may cause problems with
correct operation of the sewing machine.
Disconnect the power cord plug from the wall outlet before installing the motor.
The motor and control box weigh approximately 13 kg. Take care not to drop them on your feet when installing
them to the work table.
Be sure to tighten the nuts securely.
If they are not tightened properly, it could cause the sewing machine to vibrate or shift its position while sewing.

5.1 Installing the motor to the work table

w
q
e
r
t
y
1. Insert the bolts w into the holes in the work table q and then secure the motor u to the work table q by tightening
the motor mounting brackets e to the work table q with the flat washers r, spring washers t and nuts y as
shown in the illustration.
2. The positions of the work table q holes are shown in the illustration.
5.2 Attaching the belt
r
e
Tilt back
q
10 – 14 mm of deflection
w
CAUTION
q
e
u
Hazardous voltage Hochspannung Un voltage non adapté Un voltaje inadecuado
will cause injury. verletzungsgefahr! provoque des blessures. puede provocar las
heridas.
Turn off main Bitte schalten sie den Eteindrel'interrupteur et
switch and wait 5 hauptschalter aus und attendre 5 minutes Apagar el interruptor
minutes before warten sie 5 minuten, avantd' ouvrir le capot principal y esperar 5
opening this cover. bevor sie diese minutos antes de abrir
abdeckung öffnen. esta cubierta.
1. Tilt back the machine head and place the belt q onto
the motor pulley w and the machine pulley e.
2. Turn the two nuts r to adjust the deflection in the V-
belt q when the center of the belt is pushed.
The recommended values are:
1. For single-needle sewing machines and overlock
machines, the deflection should be 10 – 14 mm when
the belt is pushed with a force of 5 N (500 g).
2. For twin needle sewing machines, the deflection
should be 10 – 20 mm when the belt is pushed with
a force of 10 N (1 kg).
Note:
While using the sewing machine, the belt will conform
to the pulley and cause the belt tension to loosen. If the
belt tension is too loose, the following problems can
occur.
1. The stopping position may shift.
2. An abnormal noise may be heard due to belt slip-
page.
3. The belt may become too loose and contact the
cover.
4. When sewing heavy materials, the belt may slip on
the pulley and the sewing machine may stop.
MD-602, 612
3-φ8.5
57 159
5