For Machines Mfg. Since 3/11 | S E R V I C E |
Brake & Switch
As the brake lining wears, the foot pedal develops more travel. If the brake band is not adjusted to compensate for normal wear, the limit switch will still turn the lathe off, but the spindle will not stop as quickly. It is especially important that the brake is kept properly adjusted so you can quickly stop the spindle in an emergency.
Tools Needed: | Qty |
Phillips Screwdriver #2 | ........................................ 1 |
Hex Wrench 6mm | 1 |
To adjust the brake and brake switch:
1.DISCONNECT LATHE FROM POWER!
2.Put on a respirator and eye protection to protect yourself from hazardous brake dust.
3.Remove the motor access panel from the left cabinet.
4.Measure the remaining brake band lining at the thinnest point, which is usually at the 8 o'clock position, as shown in Figure 134.
3mm
Figure 134. Minimum brake belt thickness.
When the brake band is new, the lining is approximately 5mm thick. If the lining thickness wears 2.5mm or less, the brake band must be replaced. Otherwise, the rivets that secure the lining to the band will soon grind into the brake hub. If the hub becomes damaged, it must be replaced.
5.Remove the pedal stop shown in Figure 135.
Pedal Lever |
Brake Belt |
Band |
Brake |
Hub |
Pedal Stop |
Figure 135. Brake adjustment components.
6.Move the brake band over one hole to the right,
Note: If installing a new brake band, install the cap screw so there is one available hole to the left for future brake adjustment.
7.Firmly push the pedal lever to the right until it stops and the brake band is fully clamped around the brake hub.
8.Adjust the pedal stop approximately 25mm away from the pedal lever (see Figure 136), then tighten the pedal stop cap screw.
Pedal
Pedal | Lever | |
Stop | ||
|
25mm
