Echo CH8670H Owners Manual v.2 - Manual (Page 24)

20 TURNTABLE CHIPPER
SERVICE & MAINTENANCE
BEFORE INSPECTINg OR SERVICINg ANy PART OF THIS MACHINE, SHuT OFF POWER SOuRCE,
DISENgAgE THE HyDRAulICS, OPEN SHIElD AND MAkE SuRE All MOVINg PARTS HAVE COME TO A COMPlETE STOP.
WaRNING
5.11.1 chIppER bLadE SIdE bEaRING
Remove the two 3/8 inch retaining bolts holding the 1.
access cover to the main frame assembly.
tilt access cover over to allow access to disk.
2.
Raise feed roller to allow removal of bearing cap. 3.
option 1
Disconnect feed roller springs. •
Connect hoist to top feed roller spring •
eyebolts.
lift feed roller assembly to allow clearance to
•
bearing cap.
Block feed roller to prevent falling.
•
option 2
Fully collapse the feed roller lift jack. •
Screw the hydraulic jack center shaft out until •
it again touches the bottom of the feed roller
plate.
Fully extend jack to raise feed roller
•
mechanism.
Block feed roller to prevent falling.
•
remove bearing cap and bearing lock. 4.
loosen both bearing set screws. 5.
Remove four bearing mounting bolts. 6.
remove bearing and install new bearing with grease 7.
zerk facing away from engine towards hinge side of
rotor cover.
Install the four bearing mounting bolts with washers
8.
through the bearing, bearing mount bracket and frame.
Torque to 75 ft lb.
install the bearing lock.
9.
Verify that there is no shaft end play. 10.
If there is no shaft end play, proceed to Step 14. 11.
If end play is detected: 12.
loosen bearing spacer on belt side bearing. •
loosen both belt side bearing set screws. •
Drive shaft towards belt side. •
Orientation of bearing lock hole in lock is not centered
in bracket.
NoTE
5.11.2 chIppER bELT SIdE bEaRING
Remove the two 3/8 inch retaining bolts holding the 1.
access cover to the main frame assembly.
tilt access cover over to allow access to disk.
2.
lift engagement handle to disengage drive belt. 3.
loosen bolt on engine tie. DO NOT REMOVE. 4.
Verify the belt tensioning bolts on the engine mount 5.
plate are tight against the engine mount.
Turn each of the two bolts eight revolutions
6.
counterclockwise.
loosen the four engine mount bolts and slide engine 7.
towards chipper housing.
Remove the drive belt from the disk shaft pulley.
8.
Remove the bolts attaching the pulley bushing to the 9.
pulley.
Install the bushing push bolts and tighten alternately
10.
one flat at a time to remove the bushing from the
pulley.
Remove the pulley and the pulley bushing.
11.
loosen the bearing spacer bolt and remove the bearing 12.
spacer.
loosen the two bearing set screws.
13.
Remove four bearing mounting bolts and proximity 14.
sensor bracket.
remove bearing and install new bearing with grease
15.
zerk facing engine.
The large idler pulley may need to be removed for eas-
ier removal of the drive belt.
NoTE
5.11 dISk bEaRINGS
Replacing disk bearings should be only performed by a
qualified service technician.
Push belt side bearing spacer tight against •
bearing and lock in place.
tighten belt side bearing set screws.
•
tighten blade side bearing set screws. 13.
Install the bearing cap with grease zerk facing towards 14.
hinge side of rotor cover.
Remove blocking from feed roller
15.
lower feed roller assembly and, depending on lift 16.
method used, reinstall springs or screw hydraulic jack
center shaft down.
Verify blade to anvil clearance is 1/16 to 1/8” on all
17.
blades.
tilt access cover over disk.
18.
Replace the two 3/8 inch retaining bolts holding 19.
the access cover to the main frame assembly and
tighten.