Delta (Model 31-300) Instruction Manual download pdf (Page 13)

1. Loosen the table tilting lock handle (A) Fig. 23. Move the stop (B) into position and rotate the table (C) Fig. 24 until the

trunnion (D) Fig. 23 contacts the stop (B). Tighten the lock handle (A).

NOTE: The lock handle (A) is spring-loaded and can be repositioned by pulling out the handle, moving it, and letting it spring

back into position.

2. Place a square (E) Fig. 24 on the table against the belt to check the angle of the table to the belt.

3. To adjust, loosen the table-tilting lock handle (A) Fig. 23. Turn the adjusting screw (F) in or out until table is 90 degrees to

the belt.

4. Tighten the lock handle (A) Fig. 23.

5. The adjusting screw (F) Fig. 23 ensures that the belt table can rapidly return to the correct position after the table has been

tilted.

6. Adjust the pointer, if necessary.

3. Rotate the belt (D) Fig. 21 by hand, and tighten or

loosen the tracking knob (E) Figs. 20 and 21 until the

tracking is correct.

4. Turn the tool on and off to check for proper tracking. If

the belt is leading to one side or the other, very gently

turn the tracking knob (E) Fig. 20 clockwise to move the

belt to the right or counter-clockwise to move the belt

to the left.

5. A final adjustment can be made with the motor running.

THIS ADJUSTMENT SHOULD BE VERY SLIGHT.

6. Replace the top cover that was removed in STEP 1.

After a long period of time, adjustments may be

necessary to maintain the tension and tracking of the sanding

belt. If the belt will not hold its tension, tighten the set screw

(G) Fig. 22. If the belt will not hold its tracking, tighten the

set screw (F) Fig. 22. Make only small adjustments to these

screws. Over-tightening will lock the tension lever and/or the

tracking knob.

NOTE:

ADJUSTING THE SANDING BELT TABLE 90 TO THE BELT

DISCONNECT MACHINE FROM POWER SOURCE.

Fig. 21

Fig. 22

Fig. 23

Fig. 24

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Delta (Model 31-300) Instruction Manual Page 13