Echo 77412 Owners Manual v.3 - Manual (Page 23)

Crary Bear Cat Owners Manual 21
SERVICE & MAINTENANCE
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.
WARNING
5.6.2 PTO MODELS
FRONT DRIVE BELT
Move the engagement lever to the RELEASE position.
Disengage PTO and shut off tractor engine.
Remove the PTO shaft from the tractor and disconnect from
the 3 point hitch.
Remove the four 5/16" x 5/8" hex bolts and four 5/16" x 3/4"
hex bolts securing the front belt shield to the chipper housing.
Remove the shield and set aside.
Remove the snap ring securing the rotor shaft to the bear-
ing.
Remove the four 3/8" x 1" carriage bolts, washers and
nylock nuts securing the bearing support weldment to the
chipper housing. Remove bearing support weldment and
set aside.
Loosen the eye bolt to release tension on the belt (Figure
5.6).
Remove the 3/8" x 3-3/4" hex bolt, washers and nylock nut
securing the idler pulley to the idler bracket. Remove the
idler pulley.
Remove the old belt and install the new belt.
Reattach the idler pulley to the idler bracket.
Tighten the eye bolt until the belt deflection is 7/16" when a
20 lb. load is placed against the belt (Figure 5.5).
Slide the bearing support weldment onto the rotor shaft.
Secure the weldment to the chipper housing with four 3/8"
x 1" carriage bolts, washers and nylock nuts.
Secure the rotor shaft using a snap ring.
Reinstall the front belt shield using four 5/16" x 5/8" hex bolts,
four 5/16" x 3/4" hex bolts and eight 5/16" flat washers.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
REAR DRIVE BELT
Move the engagement lever to the RELEASE position.
Disengage PTO and shut off tractor engine.
Remove the PTO shaft from the tractor and disconnect from
the 3 point hitch.
Remove the forward belt shield by removing the eight 5/16"
x 3/4" bolts and washers securing the shield to the chipper
housing.
Loosen the eye bolt to release tension on the belt (Figure
5.7).
Remove the 3/8" x 3-1/2" hex bolt, washer and nut secur-
ing the idler pulley to the idler weldment. Remove the idler
pulley.
Remove the 3/8" x 3-3/4" hex bolt , washers, spacer and
nylock nut securing the idler weldment to the chipper hous-
ing. Move the idler weldment out of the way.
Remove the old belt and install the new belt.
Reattach the idler weldment to the chipper housing.
Reattach the idler pulley to the idler weldment.
Tighten the eye bolt until the belt deflection is 7/16" when a
20 lb. load is placed against the belt (Figure 5.5).
Reinstall the forward belt shield using eight 5/16" x 3/4"
bolts and washers.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Figure 5.7 - Rear Belt Drive Replacement
Figure 5.6 - Front Belt Drive Replacement