2500_Users_Manual - 第271页

Repair and Repla cement Procedures ProM aster 25 00 User Manua l 7-27 10. Use a 6/64-in ch hex wrench to remove the tw o screws that h old the air cylinder pin in pl ace. 11. Hold the bea m in place while you us e a 3/32…

Repair and Replacement Procedures

7-26 ProMaster 2500 User Manual

9. Apply a small amount of purple Loctite on the outer surface of the

new nut where it contacts the carriage during operation.

10. Twist the new anti-backlash nut into place and carefully re-assemble

all of the disconnected components.

Replacing the Beam

Gasket

If there are air leaks in the beam, follow the steps below to replace the

beam air channel gasket.

1. Turn off the 2500, remove the power cord, and disconnect the air

supply.

2. Disconnect the vacuum sensor cable from the vacuum sensor switch.

3. Disconnect the four solenoid cables.

4. Use a 3/32-inch hex wrench to remove the solenoid cable connector.

5. Disconnect the beam head rotation motor cable.

6. Disconnect the three optic cables.

Note: Write down the cable positions before you cut the tie wraps that hold the

cables in place.

7. Use a 1/8-inch hex wrench to remove the two screws that hold the

cable harness to the right side of the beam.

8. Disconnect the gray air line and the black vacuum line from the two

quick connects, noting their location.

9. Use a 5/64-inch hex wrench to remove the two screws that hold the

limit bar to the beam shafts (see Figure 7-17).

Repair and Replacement Procedures

ProMaster 2500 User Manual 7-27

10. Use a 6/64-inch hex wrench to remove the two screws that hold the

air cylinder pin in place.

11. Hold the beam in place while you use a 3/32-inch hex wrench to

gently push the air cylinder pin through the beam.

12. Gently lift the beam up and away from the beam shafts.

13. Remove the two 1/16-inch set screws in the beam motor drive pulley.

14. Disconnect the beam motor cable.

15. Remove the single 3/32-inch hex mounting screw in the beam head

pulley.

16. Pull up the beam head pulley and remove the beam rotation belt.

17. Remove the motor drive pulley.

18. Use a 1/16-inch hex wrench to remove the four motor mounting

screws, then remove the beam head rotation motor.

19. Use a 3/32-inch hex wrench to remove the two air quick connects

(insert the hex wrench into the quick connect openings).

20. Use a 3/32-inch hex wrench to remove 20 screws in the baffle plate.

21. Use a 1/4-inch hex wrench to remove the three remaining pan head

screws in the baffle plate.

22. Peel off the old air channel gasket.

23. Place the new air channel gasket onto the baffle plate.

Note: Make sure the air channel gasket does not block any air and vacuum holes.

Figure 7-17

Beam Cable and Switch Locations

2287-1

VACUUM SENSOR CABLE

CABLE HARNESS GUIDE

BEAM TRAVERSE

MOUNTING BLOCK

RIGHT END PLATE

LIMIT BAR

BEARING COVER PLATE

REAR CARRIAGE SHAFT

FRONT COVER SHAFT

VACUUM SENSOR

SWITCH

AIR CYLINDER

PIN SCREW

(1 on each side)

Repair and Replacement Procedures

7-28 ProMaster 2500 User Manual

24. Place the baffle plate back on the beam and then reinstall all of the

screws in the order shown in Figure 7-18.

25. Carefully re-assemble all of the disconnected cables and components.

Disk Drive Replacement

This procedure describes the steps required to remove and replace the

disk drive.

Replacing the Disk

Drive

If the disk drive fails, follow the steps below to replace it.

1. Turn off the 2500 and remove the power cord.

2. Disconnect the disk drive power cable.

3. Disconnect the disk drive ribbon cable.

4. Use a 3/32-inch hex wrench to remove the two screws from under

the disk drive mounting plate. Remove the disk drive.

5. Use a 3/32-inch hex wrench to attach the new disk drive to the disk

drive mounting plate and reconnect the power and ribbon cables.

Figure 7-18

Baffle Plate Reinstallation

LO QUICK

CONNECT

(Gray)

HI QUICK

CONNECT (Black)

E CHAIN SCREWS

2338-1

1/4"

SCREWS

15 5 8 13

1274

6910