Troubleshooting & Repair

4. Using a 1/4” hex wrench, loosen and remove the two

 

 

 

 

 

 

socket head cap screws holding the chipper knife in

 

 

 

 

 

 

place (access the screw heads from the rear of the

 

 

 

 

 

 

unit), and remove the chipper knife. See Figure 24

 

 

 

 

 

 

for location and temporary removal of an access plug

 

 

 

 

 

 

that permits removal of the capscrews.

 

 

 

 

 

 

5. See Figure 25. Remove both knives through the

 

 

 

 

 

 

opening in the front of the chipper/shredder, and

 

 

 

 

 

 

sharpen equally or replace both blades to ensure

 

 

 

 

 

 

proper balancing and correct chipping action.

 

 

 

 

 

Access

• Slow-speed water-cooled grinding is suggested to

 

 

 

 

 

 

 

 

 

 

Plug

help maintain blade temper and a long-lasting

 

 

 

 

 

 

 

 

 

 

 

 

sharp edge. Rapid grinding and heating of blades

*2445

 

 

 

 

will soften the edges, making repeated sharpening

 

 

 

 

 

 

 

 

 

 

 

 

necessary.

 

Figure 24. Chipper Knife Access Plug

• Chipper knives require a 30° bevel on the cutting

 

 

 

 

 

 

*2446

 

 

 

 

edge (as shown in Figure 22) for efficient chipping

 

 

 

 

 

 

 

 

 

 

action.

 

 

 

 

 

 

 

• Contact your local dealer or blade sharpening ser-

 

 

 

 

 

 

vice if you prefer not to sharpen the blades your-

 

 

 

 

 

 

self.

 

 

 

 

 

 

 

6. Clean the chipper knife mounting areas before rein-

 

 

 

 

 

 

stalling the blades to ensure a flat mounting su face.

 

 

 

 

 

 

7. Install the new chipper knives using the two cap-

 

 

 

 

 

 

 

 

 

 

 

 

screws, and two new lockwashers. Never reinstall

 

 

 

 

 

 

chipper knives using used lockwashers, as used l ck-

 

 

 

 

 

 

 

 

 

 

 

 

washers may not hold the knives adequa ely.

 

 

 

 

 

 

 

for

 

 

 

 

 

 

8. Reinstall the access plug (Figure 24) removed earlier

 

 

 

 

 

 

for capscrew access.

 

Figure 25. Removing Chipper Knife Through Front

 

 

9. Reattach the shredder hopper and chipper cone

 

Opening

using the hardware removed during disassembly.

 

 

 

 

 

 

 

 

 

 

WARNING

Replace any hardware that appears to be damag d

 

 

 

 

or worn excessively.

Not

Never use a malfunctioning unit to process

10. Check all hardware for tightness and correct assem-

material, even if it appears to be chipping materi-

al adequately. An unexpected kick-back could

bly before attempting to start your unit. Do not

occur, causing serious personal injury to you or

attempt to start the unit if extra hardware is left over

bystanders.

after reassembly is complete. Check for proper chip-

 

 

 

 

 

 

 

Reproduction

per knife assembly before proceeding.

Serious equipment damage could also result,

voiding the warranty and requiring extensive

11. Test your unit before attempting to use it to perform

repairs by a qualified service location.

chipping. Start unit, and check for unusual noise or

 

 

 

 

 

 

Deflector Shield

vibration.

 

• Shut unit off immediately if either situation occurs,

The deflector shield must pivot freely at all times, or

and re-inspect chipping knives to confirm correct

processed material could back up, clogging the unit and

positioning and assembly has been done.

requiring disassembly to clear.

• If assembly is correct, blades may not have been

 

 

 

 

 

 

 

 

 

 

WARNING

sharpened evenly, causing an imbalance.

 

 

 

 

Remove blades and sharpen evenly.

Never use the unit unless the deflector shield is

• Recheck unit. If problem persists, contact your

in place and operating properly. Material could

be ejected out of the discharge chute with great

local dealer for assistance.

force, injuring you or bystanders.

 

 

 

 

 

 

 

 

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