2500_Users_Manual.pdf - 第268页

Repair and Repl acement Procedures 7-24 ProMa ster 25 00 U ser Ma nual 9. The rig ht lead screw bearing assembl y will come a way from the right end plate with the lead screw. R emove the bearing a ssembly and replace it…

100%1 / 448
Repair and Replacement Procedures
ProMaster 2500 User Manual 7-23
6. Reinstall the traverse motor and attach the new flex coupler to the
lead screw. Tighten with a torque wrench and a left-side screw using
24 inch-pounds of torque.
Note: After you have reinstalled the flex coupler, make sure it does not drag on
the enclosed (right) side of the bracket. Leave a 1/8-inch clearance
(approximately).
Replacing the Right
Lead Screw Bearing
Assembly
If the right lead screw bearing assembly fails, follow the steps below to
replace it.
1. Turn off the 2500 and remove the power cord.
Note: This procedure requires two people to perform the steps safely.
2. Slide the beam over the programming station.
3. Remove the beam traverse motor as described on page 7-15.
4. Use a 1/8-inch hex wrench to remove the four screws in the bearing
cover plate on the right end plate.
5. Use a 9/64-inch hex wrench to loosen the four hex screws holding the
front and rear carriage shafts to the right end plate.
Note: Have an assistant hold the lead screw and shafts during the next steps.
6. Loosen the two main plate corner screws and lift the main plate.
7. Use a hex wrench to remove the two screws holding the right end
plate to the main plate.
8. Lower the main plate and slide the end plate off the shafts and lead
screw.
Figure 7-16
Right Lead Screw Bearing
Assembly
2389-1
BEAM TRAVERSE
MOUNTING BLOCK
RIGHT END PLATE
BEARING COVER PLATE
BEAM TRAVERSE
MOTOR
REAR CARRIAGE SHAFT
FRONT COVER SHAFT
Repair and Replacement Procedures
7-24 ProMaster 2500 User Manual
9. The right lead screw bearing assembly will come away from the right
end plate with the lead screw. Remove the bearing assembly and
replace it with a new bearing assembly.
10. Reverse the procedure to reinstall all of the components.
Replacing the Left
Lead Screw Bearing
Assembly
If the left lead screw bearing assembly fails, follow the steps below to
replace it.
1. Turn off the 2500 and remove the power cord.
Note: This procedure requires two people to perform the steps safely.
2. Slide the beam over the programming station.
3. Use a 1/8-inch hex wrench to remove the four screws in the bearing
cover plate on the left end plate.
4. Use a 9/64-inch hex wrench to loosen the four hex screws holding the
front and rear carriage shafts to the left end plate.
Note: Have an assistant hold the lead screw and shafts during the next steps.
5. Loosen the two main plate corner screws and lift the main plate.
6. Use a hex wrench to remove the two screws holding the left end plate
to the main plate.
7. Lower the main plate and slide the end plate off the shafts and lead
screw.
8. The left lead screw bearing assembly will come away from the left
end plate with the lead screw. Remove the bearing assembly and
replace it with a new bearing assembly.
9. Reverse the procedure to reinstall all of the components.
Replacing the Lead
Screw
If the lead screw is damaged, follow the steps below to replace it.
1. Turn off the 2500 and remove the power cord.
2. Slide the beam over the programming station.
Note: This procedure requires two people to perform the steps safely.
3. Look through the two holes in the top of the beam traverse motor’s
mounting block while you manually rotate the lead screw until the
heads of the flex coupler set screws are visible through the holes.
4. Use a 7/64-inch hex wrench to remove the set screw on the left side of
the flex coupler.
5. Use a 1/8-inch hex wrench to remove the four screws in the bearing
cover plate on the left end plate.
Repair and Replacement Procedures
ProMaster 2500 User Manual 7-25
6. Use a 9/64-inch hex wrench to loosen the four hex screws holding the
front and rear carriage shafts to the left end plate.
Note: Have an assistant hold the lead screw and shafts during the next steps.
7. Loosen the two main plate corner screws and lift the main plate.
8. Use a hex wrench to remove the two screws holding the left end plate
to the main plate.
9. Lower the main plate and slide the end plate off the shafts and lead
screw.
10. Twist the lead screw until it pulls away from the beam traverse
motor. Walk the lead screw through the beam, then slide it away
from the 2500 through the left endplate.
Note: Make sure the anti-backlash nut remains intact when you remove the lead
screw.
11. Reinstall the lead screw and all of the removed components.
12. Lubricate the screw as described on page 5-63.
Replacing the Anti-
backlash Nut
If the anti-backlash nut is damaged, follow the steps below to replace it.
1. Remove the lead screw (as described in steps 1 through 10 on page
7-24) and carefully set it aside.
2. 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).
3. Pull the beam up and away from the beam shafts. Leave all of the
cables connected and carefully set the beam aside.
4. Use a 9/64-inch hex wrench to remove the four screws that hold the
front carriage shaft in place.
Note: There are two 9/64-inch hex screws at the front of the left end plate and
two 9/64-inch hex screws at the front of the right end plate.
5. Support the carriage while you slide the front carriage shaft through
the carriage. Set the front carriage shaft aside.
6. Use a 9/64-inch hex wrench to remove the four screws that hold the
rear carriage shaft in place (this is similar to step 4, above).
7. Support the carriage while you slide the rear carriage shaft through
the carriage. Set the rear carriage shaft aside.
8. From the left side of carriage, insert the anti-backlash nut removal
tool into the anti-backlash nut and twist it counterclockwise. As you
twist, the anti-backlash nut will protrude from the right side of the
carriage. Guide it out with your hand.
Note: You may need to use a wrench to break the anti-backlash nut free.