Echo Bear Cat 70554S - Manual (Page 15)

12
S E C T I O N 3
5. Once clearance has been set, the lock collars
must be replaced to retain setting. Slip the lock
collars over the eccentric hub on the bearings.
Using a punch and a hammer, rotate the lock
collars in the direction of shaft rotation (i.e.
clockwise on the rear bearing and counterclock-
wise on the front bearing) and "set" them with a
positive hammer tap. Tighten the lock collar set
screws.
6. Loosen the set screws that hold the belt pulley on
the rotor shaft. Move the pulley on the shaft so it
is aligned directly below the similar pulley on the
engine shaft (the pulley should be moved the
equal but opposite amount that the rotor was
moved).
7. Insure the pulley drive key is completely seated
under the pulley and tighten the set screws.
8. Replace the lower belt guard, discharge screen,
and plastic bearing cap.
3.2 Replacing Shredder
Knives (Figure 4-9, pg. 20)
Caution: The shredder will aggressively
pull material into it-- especially after
installing new, sharp knives. Once material
is grabbed by machine during feeding, let go
immediately and move away.
Care must be taken to insure knives and spacers are
installed properly to maintain rotor balance.
1. Remove discharge cover, screen, and rotor end
cap.
2. Loosen the set screws holding the lock collar on
the chipper chute side rotor bearing.
3. Using a punch and hammer, tap the lock collar in
the direction opposite of normal rotation until
loose and remove.
4. Remove chipper chute cover bolts and remove
the chute.
5. Remove #10-24 bolt and nut from knife shaft
#1, slide knife shaft off of rotor assembly, and
discard the used shaft, spacers, bolt, and knives.
6. Insert new shaft, knives, spacers, bolt, and nut in
shaft #1 location (note order of assembly on
drawing). Be sure to install the spacers on the
shafts in the correct order. If the spacers are not
installed properly, the rotor will be out of balance
and also will not have proper shredding action.
7. Repeat steps #5 & #6 for shafts 2, 3, and 4.
Make sure to install knives and spacers in the
proper order as shown on the drawing.
8. Reattach chipper chute to frame and tighten
bolts.
9. Reinstall discharge screen and discharge cover
and test machine.
On later model serial number machines (#11010
and above) the shredder kit can be installed
without removing the chipper chute. Follow
instructions below:
1. Remove belt guards from under the engine
frame. Remove discharge cover and screen.
2. Remove #10-24 nuts and bolts from the knife
shafts.
3. Align shaft with 5/8 inch hole in rear of frame
and small hole in front of machine (the small
hole is located by the chipper chute).
4. Using a small punch or rod, drive the shaft
toward and out the rear 5/8 inch hole.
5. To assemble, insert shaft through 5/8 inch hole in
rear of the frame and slide knives and spacers in
their proper order onto the shaft. Install a new
#10-24 nut and bolt.
6. Repeat steps #3 through #5 to assemble the other
three shafts.
Note: Never reuse rotor shafts, bolts, and nuts if they
show signs of wear or abuse. Install new ones.
3.3 Cleaning Plugged Rotor
WARNING! If the machine becomes
plugged, shut off the engine, disconnect
the spark plug wire (or disengage P.T.O.),
and allow the machine to come to a complete stop
before clearing debris. Do not operate machine
without proper guards and screens in place.
1. Engine models: Stop engine, disengage rotor
clutch and allow machine to come to a complete
stop. Remove the spark plug wire.