Echo-bear-cat SC2170 User Manual download pdf (Page 15)

2 INCH CHIPPER/SHREDDER

ENGLISH

SERVICE & MAINTENANCE

BEFORE INSPECTING OR SERVICING ANY PART OF THIS MACHINE, SHUT OFF POWER SOURCE,

AND MAKE SURE ALL MOVING PARTS HAVE COME TO A COMPLETE STOP.

WARNING

5.6 REMOVING THE SHREDDING KNIVES

Figure 5.3, Removing the chipper blades

CHIPPER BLADE REMOVAL

1. Remove the six 5/16” spiral lock nuts securing the front

panel to the housing.

2. Remove the two 5/16-18 x 5/8” bolts and securing the

blade to the rotor. Note the relation of blade cutting

edge to rotor.

3. Inspect blade to see if cracks or nicks are visible. If

cracks are present, the blade cannot be re-sharpened

and must be discarded. (For service, order small blade

replacement kit #70738.)

4. If both sides of the blade have not been used yet, the

blade can be rotated so the new edge is in position

and re-used.

5. If both sides of the blade have been used, it must be

re-sharpened. The blades can be ground on a bench

grinder or by a professional.

6. Replace blade on the rotor. Note correct orientation of

cutting edge to rotor.

7. Apply thread locking adhesive to bolts and torque to

25 ft-lbs.

8. Repeat steps 2-7 for second blade.

9. Replace front cover and six 5/16 nuts. Test machine.

NOTE

Never reuse the #10-24 bolts, nuts or shafts. Always install

new parts when replacing knives or blades.

To replace damaged shredder knives or spacers, order

Shredder Knife Kit, 77616-00.

1. Remove the six 5/16” spiral lock nuts securing the front

panel to the housing.

2. Working one shaft at a time, remove the #10-24 screw

and nut securing the spacer.

3. Note the knife and spacer configuration as it must

be duplicated when assembling the new knives and

spacers.

Figure. 5.4, Examples of damage to knives

Figure. 5.5, Shaft assembly hole location

5.5 SHREDDER KNIVES MAINTENANCE

Do not attempt to sharpen shredder knives. Inspect the

knives often for signs of damage.

If a knife has any sign of cracking or is broken in any way,

it should be replaced immediately. (For service order,

Shredder Knife Kit, 77616-00.)

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Echo-bear-cat SC2170 User Manual Page 15

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