Brother BES-1240BC Guide

5/24/05 1

Perform all maintenance with the machine OFF

Daily Maintenance

Cleaning Oiling

Rotary hook

1. Open bobbin case covers and remove bobbin

cases. Use brush to remove lint build up in and

around rotary hooks. Compressed air may also be

used.

2. Insert bobbin cases in to rotary hooks. Make sure

bobbin thread is not over 2 inches long. Close

bobbin case covers.

Rotary hook

1. Open the bobbin case covers and rotate the outer

part of the rotary hooks counter-clockwise until you

see what is called the raceway.

(This is the raised

black portion.)

Place a small drop of oil on the

raceways.

2. Close bobbin case covers.

(Rotary hooks will automatically orientate themselves back

to the correct position when the machine is turned back on.)

For Technical Assistance Please Call Toll Free

1-877-4BROTHER

Email: tsupport@brother.com

Website: http://www.brother-usa.com/industembroidery/tech_down.aspx

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5/24/05 2

Weekly Maintenance

Oiling

Needle Bars

1. Remove the front plate that has the “BROTHER”

logo on it by removing one screw and loosening

the other. The plate will now slide off to the side.

Do this for all the heads.

2. Oil each needle bar as shown in the picture by

placing a small drop of oil on each needle bar in

the two locations. Do this for all the needle bars

on all the heads.

Thread take up bushing and connecting rod

1. Place 5-6 drops of oil in the channel behind each

head to lubricate the connecting rod.

Head has been

removed to show location.

2. Place 1-2 drops on the thread take up bushing on

each head.

Head has been removed to show

location.

For Technical Assistance Please Call Toll Free

1-877-4BROTHER

Email: tsupport@brother.com

Website: http://www.brother-usa.com/industembroidery/tech_down.aspx

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5/24/05 3

Monthly Maintenance

Cleaning

Knives

1. Remove the two rear screws and remove the

needle plates.

2. Clean any thread and lint around the moving and

fixed knives with a brush or compressed air. Do

this for all heads.

3. Re-install needle plates.

Control Box

1. Use a brush to clean filters on fans and vents in

front and back of control box.

For Technical Assistance Please Call Toll Free

1-877-4BROTHER

Email: tsupport@brother.com

Website: http://www.brother-usa.com/industembroidery/tech_down.aspx

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5/24/05 4

Monthly Maintenance

Greasing

Cam grooves

1. Remove the covers between each head by

removing the four screws.

2. Undo the wire clamp and unplug the connector

from the back. Set covers aside.

3. Remove the cover to the right of head 1 by

removing the 3 screws.

4. Remove the cover to the left on head 6 by

removing the 3 screws.

For Technical Assistance Please Call Toll Free

1-877-4BROTHER

Email: tsupport@brother.com

Website: http://www.brother-usa.com/industembroidery/tech_down.aspx

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5/24/05 5

Monthly Maintenance

Greasing

Cam grooves continued

5. Manually color change the machine to needle 9 on

9 needle machines or 12 on 12 needle machines

by rotating the knob underneath the color change

box.

6. Remove the arm cover on the heads if the

machine has them by removing the 2 screws.

Cover is not shown in photo.

7. Using the black grease, grease the groove of the

thread take up cam. Wipe a little grease on the

base needle bar. Do this for all the heads.

8. Reinstall arm covers if supplied. Manually color

change the machine to needle 1 by rotating the

knob underneath the color change box. Remove the

presser foot guides by removing the 3 screws.

For Technical Assistance Please Call Toll Free

1-877-4BROTHER

Email: tsupport@brother.com

Website: http://www.brother-usa.com/industembroidery/tech_down.aspx

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5/24/05 6

Monthly Maintenance

Greasing

Cam grooves continued

9. Remove presser foot guide plates and unhook

springs located on the back.

10. Using the black grease, grease the work clamp

cam for each head.

11. Hook the spring to the back of the presser foot

guide plate and reinstall the plate leaving the

screws loose. Make sure that the shaft clamp of the

presser foot goes into the guide on the plate. The

retracting lever should be underneath the shaft

clamp. Before final tightening of the screws, please

check the alignment of the presser foot to the

needle plate and make sure that the presser foot

goes up and down smoothly. Do this for all of the

heads.

12. Manually color change to needle 5 if it is a 9 needle

machine or 6 if it is a 12 needle machine. Reinstall

head covers, right cover on head 1 and left cover on

head 6.

For Technical Assistance Please Call Toll Free

1-877-4BROTHER

Email: tsupport@brother.com

Website: http://www.brother-usa.com/industembroidery/tech_down.aspx

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5/24/05 7

Monthly Maintenance

Greasing

Pantograph

1. Remove the X-axis cover screws and remove the

X cover. Removing the X-axis cover is machine

specific depending on whether it is a 4 or 6 head

machine. Please consult your instruction book for

detailed instructions.

2. Remove the Y-axis covers from each end of the

machine by removing the 4 screws for each cover.

3. Remove the sewing arm covers for head 3.

4. Using the white grease, lubricate all of the linear

rails in the V groove both sides of the rails for X-

axis, Y-axis plus the linear rail inside the sewing arm

of head 3. You will have to move the pantograph

both front to back and left to right to lubricate all

the grooves.

5. Reinstall all of the covers.

For Technical Assistance Please Call Toll Free

1-877-4BROTHER

Email: tsupport@brother.com

Website: http://www.brother-usa.com/industembroidery/tech_down.aspx

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5/24/05 8

6 Month Maintenance

Greasing

Heads

1. Remove the covers between each head by

removing the four screws.

2. Undo the wire clamp and unplug the connector

from the back.

3. Remove the cover to the right of head 1 by

removing the 3 screws.

4. Remove the cover to the left on head 6 by

removing the 3 screws.

For Technical Assistance Please Call Toll Free

1-877-4BROTHER

Email: tsupport@brother.com

Website: http://www.brother-usa.com/industembroidery/tech_down.aspx

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5/24/05

6 Month Maintenance

Greasing

Heads continued

5. Remove the power switch cover by removing the 3 top

screws and loosening the 2 lower ones. Cover can be

layed down on machine or by disconnecting the 3

connectors removed completely.

6. Remove the color change assembly cover by removing

the two top screws and loosening the 2 bottom screws.

7. On 4 head models. Remove the color change

rod cover by removing the 2 screws.

8. Manually color change the machine in between

needles 4 and 5 on 9 needle machines or

between 6 and 7 on 12 needle machines by

rotating the knob underneath the color change

box.

For Technical Assistance Please Call Toll Free

1-877-4BROTHER

Email: tsupport@brother.com

Website: http://www.brother-usa.com/industembroidery/tech_down.aspx

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5/24/05 10

6 Month Maintenance

Greasing

Heads continued

9. Remove the 4 hex bolts, 2 on each side of the head.

Do this for all the heads.

10. Cut threads between thread stand and head. Remove

head from machine by lifting up on it and unhook the

wire clamp and disconnect the 2 connectors at the

back. Do this for all heads.

11. Remove this bolt on the cap eaves guide

underneath each head.

12. Loosen this bolt and let the cap eaves guide

hang down.

For Technical Assistance Please Call Toll Free

1-877-4BROTHER

Email: tsupport@brother.com

Website: http://www.brother-usa.com/industembroidery/tech_down.aspx

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