Instruction manual

DC490, DW940, DW941 (FIG. 1, 5, 6)

To remove shear head from motor, loosen three cap screws (G) using the hex

wrench (D) provided. Remove shear head (B) by pulling head firmly forward. Slight

twisting action may be required if head does not slide off easily.

To remove cutter blades from shear head, remove three cap screws (G) from shear

housing (H). Be careful not to lose rear spacer bushing when removing middle cap

screw. Remove center blade (I) from housing by tapping blade gently towards the

rear. The side knives (J) and side spacers (K) will now drop out of the housing.

To remove eccentric bearing assembly from shaft, use an appropriate wrench to

loosen eccentric nut (L) by turning counterclockwise.

To install eccentric bearing assembly onto shaft, make sure the large, thin washer

(M) is first inserted over shaft. Screw eccentric bearing assembly onto shaft and

tighten with appropriate wrench. Lubricate bearing (N) with a good grade of bearing

grease.

To install cutter blades into shear housing, place the side knives (J) and side

spacers (K) into position in the shear housing (H). Insert center cap screw through

side knife and side spacer with rear spacer bushing between them. Start cap screw

into thread just enough to hold blades in place. DO NOT TIGHTEN. Insert spacer

bushing into hole in center blade and lubricate. Install center blade into shear housing

by tapping blade gently forward using a drift pin to line up hole in center blade with

forward holes in housing. Insert and tighten forward cap screw making sure spacer

bushing in center blade stays in position. Apply good grade of bearing grease to clevis

or yoke in center blade where it rides on the eccentric bearing assembly. Insert rear

cap screw into shear housing but do not completely tighten.

To install shear head assembly onto drive motor, make sure all cap screws are

loosened about 3 or 4 complete turns. Place shear head onto unit and alternately

tighten cap screws snugly to lock head assembly in place. It may be necessary to

gently tap the shear head into place if it does not readily slip onto the nose of the

power unit.

DC495 (FIG. 1, 7–10)

To remove shear head from motor, loosen the two back cap screws (G) using the

hex wrench (D) provided. Remove shear head (B) from the body by pulling head

firmly forward (Fig. 7). Slight twisting action may be required if head does not slide

off easily.

(BACK)

G (FRONT

FIG. 8

FIG. 7