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Echo SC-2013 Manual Del Operador página 19

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BEFORE INSPECTING OR SERVICING ANY PART OF THIS MACHINE, SHUT OFF POWER SOURCE,
WARNING
The serrated edge of the shredder knives should face the
same direction as the cutting edge of the chipper blades.
Never reuse the #10-24 nut and bolt. Never reuse shafts or
spacers if they show signs of wear or abuse. Always install
new parts when repairing.
5.8 REMOVING THE SHREDDER KNIVES
1. Remove the lower belt guard from under engine
frame, remove discharge door/shield and discharge
screen.
2. Remove the 10-24 × 1-3/8" bolts and nuts from knife
shafts.
3. Align shaft with the 5/8" hole in rear of frame and the
small hole in front of frame by the chipper chute.
4. Using a small punch or rod, push the shaft out the
5/8" hole in rear of frame.
5. To assemble, insert shaft through the 5/8" hole in rear
of frame and slide knives and spacers in their proper
order onto the shaft. Install a new 10-24 × 1-3/8"
bolt and nut.
6. Repeat steps 3 through 6 to assemble the other three
shafts.
7. When completed, install the discharge screen,
discharge door shield and torque all 3/8" bolts to
33 ft-lbs. Test run machine.
5.9 ADJUSTING THE CHIPPER ANVIL
The chipping blades should clear the anvil by 1/16" to no
greater than 1/8". Check the clearance every 8 hours of
operation and adjust if needed.
To adjust the anvil:
1. Remove the rotor shaft end cap and lower belt shield.
2. Loosen the set screws (1) holding the lock collars (2)
on the rotor bearings.
3. Use a punch and hammer in punch hole (3) to tap
the lock collars in the opposite direction of normal
rotation (Figure 5.6).
4. Using a rubber mallet tap the end of the rotor shaft to
obtain 1/16" to no greater than 1/8" clearance. Rotate
the rotor and check the clearance on all chipping
blades.
NOTE
On the chute side bearing, tap punch in a CW rotation.
On the engine side bearing, tap punch in a CCW
rotation.
AND MAKE SURE ALL MOVING PARTS HAVE COME TO A COMPLETE STOP.
3 INCH CHIPPER/SHREDDER
WARNING
3
1
Figure 5.7, Rotor Shaft Belt Pulley
5. Once clearance has been set, the lock collars must
be replaced and retightened. Using a punch and a
hammer, tap the lock collars in the direction of shaft
rotation (clockwise on the engine side bearing and
counterclockwise on the chute side bearing) and
set them with a hammer tap. Tighten the lock collar
set screws.
6. Loosen the set screws holding the belt pulley on the
rotor shaft (Figure 5.7). Move the pulley on the shaft
so it is aligned with the engine drive pulley. The pulley
should be moved the same amount the rotor was
moved, only in the opposite direction. Torque pulley
set screw to 160 in-lbs.
7. Insure the pulley drive key is completely seated under
the pulley and tighten the set screws.
8. Check pulley alignment by laying a straightedge
across the pulley faces. Pulley faces should line up.
If not, repeat steps 6 and 7 until the pulley is lined up.
SERVICE & MAINTENANCE
2
1
Figure 5.6, Rotor Bearing
2
15

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