Southbend SB1051 owner manual Gap Removal, Gap Installation

	S E R V I C E
13" x 40" Heavy 13® EVS Lathe		For Machines Mfg. Since 5/11

Gap Removal

1.Remove the four gap-bed cap screws, shown in Figure 138.

Dowel Pin

Jack Nut

Gap-Bed

Cap Screw

Way End

Cap Screw

Figure 138. Fasteners holding gap in place.

2.Remove the two way-end cap screws.

3.Tighten the two dowel-pin jack nuts until the pins are pulled free from the gap insert.

4.Tap the outside of the gap insert with a dead blow hammer to loosen it, then remove it.

Gap Installation

1.Use mineral spirits and a clean lint-free rag to clean the mating surfaces of the gap, bed, and ways. If necessary, stone the mating surfaces to remove scratches, dings, or burrs.

2.Wipe a thin layer of light machine oil on the mating surfaces.

3.Place the gap insert into the gap and use a dead-blow hammer to align the insert with the lathe bed.

4.Back off the dowel pin jack nuts, and lightly tap the dowel pins back into their respective holes until they are seated. This process will further help align the gap insert and bed mating surfaces.

5.Install all fasteners and lightly snug them in place.

6.Mount a dial indicator with a magnetic base to the top of the saddle to indicate alignment.

7.First test the peak of the two prisms of the gap insert that the saddle rides on, then test the flanks of the prisms.

8.Tighten the gap bed cap screws in an alternating manner and tap the side of the gap insert into alignment.

9.Inspect the gap alignment 24 hours later to make sure the gap is still aligned. If necessary, loosen the gap bed cap screws and repeat Steps 7–8until the insert is properly aligned.

-82-