*2560

Troubleshooting & Repair

• If the spacer tube has deep grooves worn into it, do not reuse the part - replace it using an exact factory replacement part only.

•Rotate or flip the hammer to provide a new cutting edge, or install a new hammer if worn out or dam- aged.

•Reassemble the hammer and related parts and hardware, observing the correct assembly sequence as shown in figures 19 and 20.

8.Tighten the capscrew securely. For proper assembly, do not exceed 45 ft. lbs. of torque when tightening.

9.Rotate rotor to expose next shredding hammer, and repeat steps 6 - 8. When replacing “J” hammers, observe the correct placement of the blade toward the inside or outside of the rotor assembly.

10. If chipping knives are to be inspected or serviced, go

Figure 21. Reassembling Shredder Hammer

to the following section on chipping knives. If service

 

 

 

 

 

 

is to be done on shredding hammers only, proceed to

 

 

 

 

 

 

next step below.

 

 

 

 

 

 

 

11. Reassemble the rotor housing using the 5/16-18 hex

 

 

 

T p View

Side View

nuts removed earlier.

 

 

 

 

 

 

 

12. Reattach the shredder hopper, repeating the assem-

 

 

 

 

 

 

1/16"

 

 

 

 

 

 

bly sequence used when the unit was fi st assem-

 

Min.

 

 

 

 

 

 

 

 

 

bled.

 

 

 

 

 

 

 

13. Check all hardware for tightness and c rrect assem-

 

 

 

 

 

 

 

 

 

 

 

 

bly before attempting to start unit. Do not attempt to

 

 

 

 

 

 

 

 

 

 

 

 

start unit if extra hardware is left over after reassem-

 

 

 

 

 

 

 

for

 

 

 

 

30°

 

bly is complete. Check all hammer assemblies

*2562

 

 

 

before proceeding.

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 22. Chipper Knives Minimum Cutting Edge

 

 

Chipping Knives

 

 

 

 

 

 

 

Not

 

 

 

 

 

 

Chipping knives should be resharpen d or r placed

*2549

 

 

 

 

when tree limbs and branches require extra force to feed

 

 

 

 

 

 

completely into the chipper block.

 

 

 

 

 

 

 

Chipping knives may be resharpened until the distance

 

 

 

 

 

 

 

Reproduction

 

 

between the mounting holes and the top corner of the

 

 

 

 

 

 

blade bevel is 1/16” apart. See Figure 22.

 

 

 

 

 

 

To inspect and service the cutting knives, follow these

 

 

 

 

 

 

steps:

 

 

 

 

 

 

 

1. Turn engine off, allow rotor to stop completely, and

 

 

 

 

 

 

disconnect spark plug wire.

 

 

 

 

 

 

 

2. See Figure 18. Detach the shredder hopper from the

 

 

 

 

 

 

rotor housing, leaving the liner and handle in place on

 

 

 

 

 

 

the hopper.

 

 

 

 

 

 

 

3. Using a 1/2” box wrench or socket, remove the chip-

 

 

 

 

 

 

Figure 23. Removing Chipper Cone to Expose

per cone and mounting casting to expose the oval

 

 

 

Chipping Knives

 

 

chipping block and one chipping knife. See Figure 23.

 

 

 

 

 

 

 

 

 

 

 

25