17
8 INCH CHIPPER
ENGLISH
SERVICE & MAINTENANCE
WARNING
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.
5.11 ROTOR BEARINGS
1. Rotate discharge to the right side of the machine.
Open access cover (see Section 5.3). Tilt the access
cover open to allow access to the rotor.
2.
Remove upper and lower belt guards (10-5/16 bolts).
5.11.1 FRONT BEARING REMOVAL
3. Remove the idler tensioning springs, and remove the
1/2" bolt holding the idler pulley in place.
4. Remove the drive belt.
5. Taking the bolts out of the pulley and reinserting them
into the empty holes, slowly tighten each bolt in a
rotating clockwise direction to remove the bushing
and sheave from the rotor shaft.
6. Loosen the set screw holding the spacer in place and
remove. If rear bearing does not need to be removed
go to step 11.
5.11.2 REAR BEARING REMOVAL
7. Remove the protective cap.
8. Remove the 3/8 bolt holding the retaining spacer and
remove the spacer.
9. Remove the four 1/2" bolts on each rotor bearing and
loosen the two set screws on each bearing. (Note: )
10. Remove and replace with new bearings.
11. Put the bolts back in the bearings and slide into place.
Tighten bolts to 75 ft-lbs. (102 Nm). Slide rear collar
back into place and insert 3/8 bolt.
12. Taking a rubber mallet, tap the rotor shaft until the
rear collar is tight against the rear bearing. Tighten
the bolt and lock the set screws on both bearings.
Torque to 180 inch-lbs (20 Nm). Reinstall front collar
and tighten the cap screw.
5.12 PTO DRIVELINE LUBRICATION
1.
Every 8 hours, lubricate PTO cross journals. Make
sure grease purges through all four bearings.
2. Every 8 hours, lubricate PTO inner tubes. Telescoping
members must have lubrication to operate
successfully. Telescoping members without fittings
should be pulled apart and grease should be added
manually with a brush.
3. Every 8 hours, lubricate the PTO shield retaining
bearing. Molded nipples on the guard near each
guard bearing are intended as grease fittings and
should be lubricated every 8 hours of operation.
13. Reinstall the rear rotor protective cap. Slide the
bushing on and tighten set screw, then slide the
sheave on. Insert bolts into the sheave and tighten in
a clockwise direction. Torque to 108 inch-lbs. (12 Nm).
14. Check the alignment of pulleys with a straight edge
and adjust if needed.
15. Replace the drive belt.
16. Replace the idler and tighten. Reinstall tensioning
springs.
17. Close access cover and secure as described in
Section 5.3.
18. Replace belt guard and resume operation.
19. Start tractor engine and engage PTO drive clutch
(see tractor owner’s manual). Increase engine speed
to rated PTO RPM position. Test unit; readjust pulleys
and belt tension if needed.
You may have to clean the shaft with emery cloth.
NOTE
