Bridgeport Milling Machine SERIES 1 CNC

Remove the clutch hub assembly 'Q'

Remove the bearing, drive discs and circlips from the hub assembly 'Q'

Replace the bearing and housing 'S'

Thread hub 'B' through the bearing and reassemble the discs, etc.

Sign off on the brake shoe replacement

Step 2: Lower the quill to full extent

Step 3: Remove the two lower cap screws 'M', from the speed changer housing

Cap screws 'M' removed successfully

Step 4: Remove the four cap screws 'N'

Cap screws 'N' removed successfully

Step 5: Remove the top assembly 'O', and tap to clear dowels

Adjust Table Saddle Screw Backlash

Move the saddle back (toward the column) 3/4 of the way through the range of travel

Remove four socket head cap screws securing bracket 'Q' to knee

Pull the saddle forward to expose lock nut 'R' and adjusting nut 'S', through the hole in the front of the knee

Use the larger end of the two-piece backlash adjustment tool, to loosen lock nut 'R'

Use the smaller end of the backlash adjustment tool to engage lead screw adjusting nut 'S'

While slowly turning handle 'T', tighten the adjusting nut until backlash is .003 to .005 inches [.08 to .13 millimeters]

Move the saddle back and replace the fourscrews securing bracket 'Q', to the knee

Lubricate with few drops twice daily:

Way Surfaces and Lead Screws lubricated with Sunoco Waylube #1180 or equivalent

Milling Heads (Spindle Bearings) lubricated with S.A.E. 10 or 10W Light Oil (None on grease-packed heads)

Motor - None required. Motor greased for life of bearings

Machine - Lubricated with grease every six months as described on lubrication plate

Power Feed lubricated to sight level with Mobilube No. 46 S.A.E. 140

Shaping Attachment lubricated with Mobil 600W Oil or equivalent

Sign off on the machine lubrication

1. Run head to adjust to lowest speed

3. Remove three screws "A" and cover "B"

4. Using the two screws "A", compress spring "C"

5. Rotate the speed changer to the highest speed

6. Remove the reversing switch from the belt housing

7. Remove the two securing screws "D"

8. Lift the motor and rest the case on stud "E"