Southbend SB1059F owner manual Brake switch

For Machines Mfg. Since 3/11 S E R V I C E EVS Toolroom Lathe w/DRO

6.Have another person step on the brake pedal while you verify that the cam lobe shown in Figure 128 makes the brake switch plunger click in.

—If the switch does not click, loosen the two switch mounting screws, push the pedal all the way down, and move the switch closer to the lobe until it clicks. Secure the switch in place at this location.

With the foot pedal released, the switch plunger should be approximately 3mm from the lobe.

Switch

Plunger

Cam Lobe

Figure 128. Brake switch.

7.Have another person press and release the brake pedal a few times while you watch for loose linkage fasteners or worn pivot points. Tighten or replace parts as necessary.

8.While the brake pedal is being held down to lock the brake drum in place, remove the drum retaining cap screw and flat washer shown in Figure 129.

9.Use mineral spirits and a rag to clean the drum, then inspect it.

—If the drum is bell-mouthed, cracked, or shows deep grooves, replace it. For minor scoring, the drum can be dressed with sandpaper or turned on a lathe.

!

Brake

Drum

E-Clip

Cap Screw

& Flat Washer

Springs

Figure 129. Brake drum.

10.Remove the E-clip and springs shown in the inset of Figure 129, then remove the brake shoes.

11.Clean the brake shoes with hot soapy water, then inspect them and measure the brake lining thickness.

—If the lining is 3⁄16" or less or if the lining is damaged, replace the brake shoes as a set.

12.Replace the brake drum cover, backsplash, and chuck guard before re-connecting the lathe to power.

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