Bridgeport Milling Machine series 1

- Lubricate with few drops twice daily:

1. Way Surfaces and Lead Screws using Sunoco Waylube #1180 or equivalent

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

3. Motor - None required. Motor greased for life of bearings

4. Machine - Lubricate with grease every six months as described on lubrication plate

5. Power Feed using Oil to sight level with Mobilube No. 46 S.A.E. 140

6. Shaping Attachment using Mobil 600W Oil or equivalent;

Quill in maximum up position and quill lock applied

Screw 'I', hub 'j', and key 'K' removed

Screws 'L' removed, allowing housing to rotate slowly releasing spring tension

End of spring lifted from pin on the pinion shaft

Housing 'M' rotated counter-clockwise from head casting

Spring removed from housing and replaced

Spring refitted to main housing casting. Housing turned clockwise until spring locates on pin in pinion shaft

Sign off on the balance spring replacement

3. Remove the clutch hub assembly "Q"

5. Remove the bearing, drive discs and circlips from the hub assembly "Q"

6. Replace the bearing and housing "S"

7. Thread hub "B" through the bearing and reassemble the discs, etc.;

Warning: This procedure requires trained personnel with PPE!

Upload a photo of the marked reference line on quill and nose cap 'S'

Lock screw 'T' and collet aligning screw 'U' removed?

Collet aligning screw 'U' replaced and checked for interference?

Nose cap 'S' replaced and aligned correctly?

Set screw 'R' replaced without overtightening?

Drive Belt Replacement Procedure

Three screws 'F' removed and inserted into the adjacent tapped holes, bearing housing 'G' withdrawn

Two screws and the bushings 'H' removed

Four screws '|' and one screw 'J' removed

Four screws securing speed changer 'K' removed

Top housing 'L' removed. Tap to clear the dowels

Sign off on the drive belt replacement