20
4 INCH CHIPPER
SERVICE & MAINTENANCE
WARNING
BEFORE INSPECTING OR SERVICING ANY PART OF THIS MACHINE, SHUT OFF POWER SOURCE, DISCONNECT SPARK PLUG
WIRE FROM SPARK PLUG AND MAKE SURE ALL MOVING PARTS HAVE COME TO A COMPLETE STOP.
5.11 ROTOR BEARINGS
5.10.2 DRIVE BELT REPLACEMENT
1.
Shut engine off.
2. Place the chipper engagement lever in the START
position (see Figure 5.7).
3. Remove the belt guard by removing the 5/16" bolts.
4. Remove 3/8 x 5" bolt and the idler pulley.
5. Place the chipper engagement lever in the CHIPPING
position (see Figure 5.8).
6. Loosen the four carriage bolts attaching the engine
plate to the trailer.
7. Locate the two 5/16 x 3" bolts and 5/16" nuts located
on the side of the chipper between the trailer and the
engine plate.
8.
Loosen both 5/16" flange nuts.
9. To release the tension on the belt, loosen both 5/16
x 3" bolts equally and slide the engine towards the
chipper housing.
10. Remove the old belt and install the new belt. Loosen
the belt guide if needed.
11.
Adjust the drive belt.
12. Place the chipper engagement lever in the START
position (see Figure 5.7).
13. Reinstall 3/8 x 5" bolt and the idler pulley.
14. Place the chipper engagement lever in the CHIPPING
position (see Figure 5.8).
15. Position the belt guide 1/8" over the belt and tighten
bolts.
16. Reinstall the belt guard.
5.11.1 REMOVING
1. Place the chipper engagement lever in the START
position (see Figure 5.7).
2.
Shut engine off.
3. Remove the belt guard by removing the 5/16" bolts.
4. Remove the idler pulley.
5. Place the engagement lever in the CHIPPING position
(see Figure 5.8)
6. Remove the belt.
7. To remove the rotor sheave, do the following:
a. Remove the three bolts securing the rotor sheave
to the rotor shaft.
b. Reinstall the bolts into the second set of holes.
Gradually tighten bolts equally to push the sheave
off the rotor shaft.
8. To remove the front bearing, do the following:
a. Remove the snap ring.
b. Loosen the setscrews securing the front bearing
to the rotor shaft.
c. Remove the two 1/2 x 1-1/2" carriage bolts and
1/2" centerlock nuts holding the front bearing to
the chipper housing.
d.
Slide the front bearing off the rotor shaft.
e. Remove the second snap ring.
9. To remove the rear bearing do the following:
a. Remove the seven 5/16" nylock nuts and washers
securing the rotor cover to the chipper housing.
Remove the rotor cover.
b. Loosen the set screws securing the back bearing
to the rotor shaft.
c. Remove the two 1/2 x 1-1/2" bolts and 1/2"
centerlock nuts holding the back bearing to the
chipper housing.
d. Slide the chipper rotor out from the chipper
housing until the bearing slides off the rotor shaft.
Removal of the rear bearing is dependent upon
removal of the front bearing.
NOTE
Figure 5.10, Drive Belt Replacement
BUSHING
SHEAVE
IDLER
PULLEY
3/8 X 5" BOLT
ROTOR
BUSHING
ROTOR
SHEAVE
