DeWalt 18657 Brush Inspection And Replacement, Through, Disconnect machine from power source

8.Reverse the knife (H) Fig. 32 or install a new knife. Position the magnetized knife transfer tool (G) on top of knife. Place the knife in the cutterhead underneath the locking bar (D) with the bevel edge up. Ensure that the pins in the cutterhead and locking bar engage with the holes in the knife.

9.Remove the magnetized knife transfer tool and tighten the seven screws loosened in STEP 6.

10.To replace the other knife, repeat STEPS 4

THROUGH 9.

11.After both knives are installed, depress the cutterhead lock (D) Fig. 33. Place the cutterhead guard in position and over the cutterhead lock. Slide the guard in as far as possible. Replace the two screws (A) Fig. 33 that were removed in STEP 3.

G H D

Fig. 32

D

B

A

Fig. 33

BRUSH INSPECTION AND REPLACEMENT

Disconnect machine from power source!

Brush life varies. It depends on the load on the motor. Check the brushes after the first 50 hours of use for a new machine or after a new set of brushes has been installed. After the first check, examine them after about every 10 hours of use until replacement is necessary.

The brush holders, one of which is shown at (A) Fig. 34, are located on the motor housing opposite each other. One of the removed brushes is illustrated in Fig. 35. When the carbon (B) on either brush is worn to 3/16" (4.8 mm) in length or if either spring (C) or shunt wire is burned or damaged, replace both brushes. If the brushes are found serviceable after removing, reinstall them.

A

B

C

Fig. 34

Fig. 35

17 - English