15
4.5 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.
5.10.1 DRIVE BELT ADJUSTMENT
Check the condition of the drive belt annually or after
every 25 hours of operation, whichever comes first. If
the belt is cracked, frayed, worn or stretched, replace it.
Replace belt with original banded type belt only. Do not
use single type belts.
1. Move the engagement lever to the RELEASE position.
2.
Disengage PTO and shut off tractor engine.
3. Remove the PTO shaft from the tractor and disconnect
from the 3 point hitch.
4. Move the engagement lever to the CHIPPING
position.
5.
Remove the 5/16" bolts to take off either the front or
rear belt shield.
6. Either tighten or loosen the eyebolt at the base of the
idler until the belt deflection is about 7/16" when a
20 lb. load is placed against the belt.
7. Reinstall belt shields.
5.10.2 FRONT DRIVE BELT REPLACEMENT
1. Move the engagement lever to the RELEASE position.
2.
Disengage PTO and shut off tractor engine.
3. Remove the PTO shaft from the tractor and disconnect
from the 3 point hitch.
4. Remove the four 5/16" × 5/8" hex bolts and four 5/16"
× 3/4" hex bolts securing the front belt shield to the
chipper housing. Remove the shield and set aside.
5. Remove the front bearing snap pin. Then, remove the
1/2" × 1-1/2" bolts that connect the front bearing to
the bearing support weldment.
6. Remove the four 3/8" × 1" carriage bolts, washers and
nylock nuts securing the bearing support weldment
to the chipper housing. Remove bearing support
weldment and set aside.
7. Loosen the eye bolt to release tension on the belt
(Figure 5.6).
8. Remove the 3/8" × 3-3/4" hex bolt, washers and
nylock nut securing the idler pulley to the idler bracket.
Remove the idler pulley.
9. Remove the old belt and install the new belt.
10. Reattach the idler pulley to the idler bracket.
11.
Tighten the eye bolt until belt deflection is 7/16" when
a 20 lb. load is placed against the belt (Figure 5.7).
12. Slide the bearing support weldment onto the rotor
shaft. Secure the weldment to the chipper housing
with four 3/8" × 1" carriage bolts, washers and nylock
nuts. Attach the front bearing to the weldment with
two 1/2" × 1-1/2" bolts, washers and nuts. Tighten
bearing bolts to 120 ft-lbs.
13. Reinstall bearing snap ring.
14. Reinstall the front belt shield using four 5/16" × 5/8"
hex bolts, four 5/16" × 3/4" hex bolts and eight 5/16"
flat washers.
5.10.3 REAR DRIVE BELT REPLACEMENT
1. Move the engagement lever to the RELEASE position.
2.
Disengage PTO and shut off tractor engine.
3. Remove the PTO shaft from the tractor and disconnect
from the 3 point hitch.
4. Remove the forward belt shield by removing the eight
5/16" × 3/4" bolts and washers securing the shield to
the chipper housing.
5. Loosen the eye bolt to release tension on the belt
(Figure 5.8).
Figure 5.7, Front Belt Drive Replacement
5.10 DRIVE BELTS
