Echo CH450H Owners Manual v.2 - Manual (Page 16)

12 4.5 INCH HYDRAULIC CHIPPER
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
5.9 REPLACING ROTOR BEARINGS
REMOVING THE OLD ROTOR BEARING
1. Unhook hydraulic hoses from the utility loader.
2. Unscrew the two screws from the split coupler (the bolts
are located underneath the coupler).
3. Remove the four bolts from the base weldment.
4. Slide out the hydraulic pump assembly as an entire
unit.
5. Remove the split coupler.
6. Remove the snap ring located right before the
bearing.
7. Remove the 1/2" nuts from the bearing.
8. Take off bearing and replace.
See Figures 5.4 and 5.5.
INSTALLING THE NEW ROTOR BEARING
1. Replace the 1/2" nuts to secure the new bearing to the
motor mount plate.
2. Replace the snap ring.
3. If the unit comes with a shim behind the bearing,
reinstall it.
4. Replace the hydraulic pump assembly by replacing the
screws and bolts. Replace the 1/2" nuts.
5. Reattach the hydraulic hoses to the utility loader.
NOTE
When reinstalling the new bearing, make sure the
grease zerk is facing the bottom of the housing.
Figure 5.4 - Unscrewing the two screws from the split coupler
Figure 5.5 - Disassembly of hydraulic pump, coupler, and snap ring to
get to the bearing.
1. Remove the chipper deflector (see Fig. 5.6).
2. Remove debris, taking care to avoid the chipper
blades, which can be extremely sharp.
3. Once debris is removed, replace the chipper deflector.
5.10 CLEARING A PLUGGED DISK
Figure 5.6 - Location of chipper deflector