HOW TO CHANGE THE DRUM SPEEDS AND REPLACE THE DRIVE BELT

The drum sander has two drum speeds - 2210 SFM or 3300 SFM. To change the sanding drum speeds or to replace the drive belt:

Disconnect machine from power source.

1.Raise the top drum cover (A) Fig. 25.

2.Remove the two hole plugs (B) Fig. 25.

 

A

 

B

G

G

 

 

Fig. 25

3.Place a 9/16" socket with an extension (not supplied) in one of the two holes where the hole plugs were removed.

NOTE: If you do not have a socket extension, remove the bolts (G) Fig. 25 from the panel to get to the bolts. Loosen one hex bolt, then the other to relieve tension on the motor. Slightly lift the motor (located under the machine) to relieve tension on the belt. Replace or change the belt positions on the pulleys.

IMPORTANT: The sanding drum speed is 3300 SFPM with the belt on the inner pulleys (A) Fig. 27. The drum speed is 2210 SFPM with the belt positioned on the outer pulleys (A) Fig. 26.

NOTE: Position the poly-v drive belt on the pulleys correctly to provide maximum performance with minimal belt wear.

4.After you have replaced or repositioned the belt on the pulleys, apply downward pressure on the motor and tighten the two hex-head bolts that were loosened in STEP 3.

5.Use light finger pressure on the belt midway between the pulleys to check for proper tension. A deflection of approximately 3/16" is correct.

6.Replace the hole plugs (B) Fig. 25.

Fig. 26

A

A

Fig. 27

HOW TO REMOVE AND REPLACE THE DRUM SANDING BELT

B

A

C

Fig. 28

A

C

Fig. 29

B

D

A

Fig. 30

B

A spring clip on each side of the drum holds the sanding belt in place.

Disconnect the machine from the power source.

1.Open the drum cover.

2.Press the spring clip (B) Fig. 28 together and remove one end of sanding belt (A).

NOTE: The clip must be fully depressed against the drum support.

3.Rotate the drum (C) Fig. 29 by hand until you reach the other spring clip. Squeeze that spring clip open to remove the sanding belt.

4.To replace the sanding belt, press the spring clip (B) Fig. 29 together and insert one end of the sanding belt (A) through the slot in the drum and into the spring clip. Align the tapered end of the sanding belt with the edge of the drum.

5.Tightly wrap the sanding belt (A) Fig. 30 around the drum cylinder (D), keeping each wrap close to the previous edge.

IMPORTANT: Do Not overlap the edges of the sanding belt (A).

6.Insert the other end of the sanding belt into the left spring clip as tightly as possible.

The sanding belt will stretch during use. Periodically, press the spring clip and tighten the belt in the clip.

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DeWalt 31-260X HOW to Change the Drum Speeds and Replace the Drive Belt, HOW to Remove and Replace the Drum Sanding Belt
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31-260X specifications

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