Delta DJ-20 Series Instruction Manual page 23

REMOVING, REPLACING, AND
RESETTING KNIVES
If the knives are removed from the cutterhead for re-
placement or sharpening, care must be used in
removing, replacing, and resetting them.
D I S C O N N E C T M A C H I N E F R O M
POWER SOURCE.
1. Move the fence to the rear and remove the
cutterhead guard.
B E E X T R E M E LY C A R E F U L T H AT
Y O U R H A N D S D O N O T C O M E I N
CONTACT WITH THE KNIVES. THE KNIVES ARE
VERY SHARP. WEAR PROTECTIVE GLOVES WHEN
HANDLING THE KNIVES.
2. Using wrench (A) Fig. 49, slightly loosen the four
locking screws (B) in each knife slot by turning the
screws (B) clockwise. Loosen screws (B) Fig. 49,
further and remove knife and knife locking bar.
3. Fig. 50, shows the knife (C) and knife locking bar (D)
removed from the cutterhead. Remove the
remaining two knives and locking bars, in the same
manner.
4. Using wrench (E) Fig. 50, lower the two knife
adjustment blocks to the bottom of the cutterhead by
turning screws (F) counterclockwise in all three slots
of the cutterhead.
5. Before assembling knives make certain the knives
and locking bars are thoroughly clean and free of
gum and pitch.
6. Place the knife locking bars (D) Fig. 50, and knives (C)
into each slot in the cutterhead.
C A R E M U S T B E T A K E N W H E N
I N S E R T I N G T H E K N I V E S A S T H E
CUTTING EDGES ARE VERY SHARP.
PROTECTIVE GLOVES WHEN HANDLING THE
KNIVES.
7. Push the knife down as far as possible and turn each
screw (B) Fig. 49, counterclockwise just enough to
hold the knife in position. Replace the remaining two
knifes in the same manner.
K N I V E S M U S T B E I N S T A L L E D
CORRECTLY AS SHOWN IN FIG. 51.
8. The knives are adjusted correctly when the cutting
edge of the knife extends out .015" from the
cutterhead diameter.
9. Carefully rotate the cutterhead (G) Fig. 52, until the
round portion of the cutterhead is on top as shown.
10. Place a .015" feeler gage (H) Fig. 52, on the
cutterhead and using a straight edge (J) on the rear
table adjust the height of the rear table until it is
.015" above the cuttinghead diameter, as shown.
11. Lock the rear table in position and remove the feeler
gage.
F
WEAR
23
B
Fig. 49
F
E
Fig. 50
Fig. 51
J
H
Fig. 52
A
D
C
G