DeWalt DC841 Instruções de Operação descarregar pdf (Página 11)

Maintenance Adjustments and Alignments

Caution! Disconnect and lockout power supply before making any adjustments or alignments.

Your saw has been completely assembled, aligned and tested at the factory...then partially disassembled for shipment. Han-

dling during shipment may cause some misalignment and the following information will enable you to correct any cutting

inaccuracy you discover. These adjustments may also be necessary after a period of use. (See preventive maintenance)

Important ...

Since one adjustment may affect another it is important to run through the adjustments in the sequence as

follows.

Adjustment of Base to Column Fit

If excessive side motion exists at the end of the arm

while the arm clamp is engaged, adjustment to the

base or bronze gib (C) is generally necessary. To ad-

just:

1. Loosen all pinch bolts (A) and set screws (B). Pull

the arm clamp handle forward.

2. With the motor and yoke in the rearmost position

the elevation effort should be easy. Tighten the

bottom pinch bolt until there is an increase in the

elevation effort. Once elevation becomes snug

back off the bolt 1/4-1/2 turn. Repeat this for the

other two pinch bolts.

3. Tighten the gib set screws (B) hard, then back

them off. Run them back up against the gib

lightly, then snug up the locknut.

Adjustment of the Arm Clamp

The arm clamp holds the arm tightly on the column

in the desired position for cutting. The arm clamp

handle should be upright when tightened. If it goes

beyond center adjust as follows:

1. Place motor carriage in the rearmost position.

2. Loosen the arm clamp set screw (A).

3. Move arm clamp handle to upright position and

tighten the arm clamp handle bolt (B). Note

this is a left hand threaded bolt.

4. Tighten the screw.

Adjustment of the Rollerhead to Arm

Accurate work cannot be done if the roller bearings in the motor carriage are not in proper adjustment. When play develops

between the rollerhead and the arm the following adjustment is required:

1. Bring the rollerhead to the front of the arm and lock in place using the adjustable stop. Move saw to in-rip position.

2. Loosen the sockethead screws holding the arm end cap and rotate the end cap upward to expose bearings.

3. Clean the tracks thoroughly. Wipe them clean with a solvent, do not use kerosene. Use extreme caution as most sol-

vents are toxic and/or flammable. Do not grease or oil the tracks.

4. Loosen the locking set screws (A) two full turns to release the eccentric shafts. (Both are located on the right hand side)

5. Loosen the hex jam nuts (B) on both bearing pins.

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DeWalt DC841 Instruções de Operação Página 11

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