Echo CH9540H Owners Manual v.3 - Manual (Page 21)

PTO CHIPPERS 17
ENGLISH
SERVICE & MAINTENANCE
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.
WaRNING
5.10 REpLaCING bEaRINGS
1. Remove the two 3/8 inch retaining bolts holding access
cover to main frame assembly. Tilt access cover over
to allow rotor access.
2. Remove large belt guard (three 5/16 inch bolts).
3. Remove hitch Support. loosen bolts on hydraulic
pump and remove hydraulic pump belt. using the push
bolts from the bushing, remove the bushing and pulley
from the rotor shaft.
4. Remove idler pulley and belts. using the push bolts
from the bushing, remove the bushing and pulley from
the rotor shaft.
5. Remove the four 1/2 inch bolts on each rotor bearing
and remove the punch used to lock the rotor.
5.9 adJuSTING/REpLaCING dRIvE bELT
disengage PTO and shut off tractor engine. 1.
Remove PTO shaft from tractor; disconnect machine 2.
from 3 pt. hitch.
Remove round shield connected to belt guard that
3.
covers PTO shaft by removing two 5/16" nuts.
Remove belt guard covering pulleys and belts.
4.
Remove spring loaded idler pulley off belts and remove 5.
belt.
Remove hitch Support.
6.
Install new belt and reverse above instructions to 7.
complete belt replacement.
check the condition of the drive belt annually or after every
25 hours of operation, whichever comes first. If the belt is
cracked, worn, frayed, or stretched, replace it.
To replace the belt:
6. using an overhead hoist or lifting device, lift the rotor
assembly completely out of the frame. The complete
rotor assembly is 275 lbs.
7. Once the rotor assembly is out of the frame, remove 3/8"
bolt and collar from front. Remove both bearings and
place new bearings on rotor shaft. Replace collar.
8. use the overhead hoist or lifting device to return the
complete rotor assembly to the chipper frame.
9. Slide rotor back until front collar is tight against the front
bearing. lock the front bearing and install the four 1/2
inch bolts on each bearing to secure them to the frame.
Tighten bolts to 75 ft-lbs. Check and adjust chipper anvil
if needed. lock rear bearing.
10. Slide rear collar on shaft against rear bearing. Slide bushing
onto shaft with flange against collar and lock bushing to
shaft. Attach large pulley to bushing. Replace drive belts on
pulleys and install idler pulley. check alignment of pulleys
with straight edge and adjust if needed.
11. close cover and replace bolts.
12. Replace hydraulic pump bushing and pulley. Replace
hydraulic pump belt. Readjust hydraulic pump belt
tension by sliding the hydraulic pump in the mounting
slots. Tighten bolts.
13. Replace belt guard and resume operation.
14. 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.