Echo 71825 - Manual (Page 15)

13
Other Service Tips
Trailer Service Tips
Greaseable
Bearings and Pivots
4. If a rotor bearing needs repair, it is best to remove the complete rotor assem-
bly from chipper frame.
5. Using an overhead hoist or lifting device, remove the four 1/2 inch bolts on
each rotor bearing and lift the rotor assembly completely out of the frame. The
complete rotor assembly is 275 lbs.
6. Once the rotor assembly is out of the frame, both bearings can be removed by
a puller and replaced on the shaft.
7. Use the overhead hoist or lifting device to return the complete rotor assembly
to the chipper frame.
8. Install the four 1/2 inch bolts on each bearing to secure them to the frame.
Tighten bolts to 75 ft. lbs.
9. Replace drive belt on pulleys and lower belt idler. Check alignment of pulleys
and adjust engine if needed.
10. Check belt tension before start-up. Adjust the eyebolt that anchors the idler
spring to adjust the belt tension. Tighten the eyebolt until the belt deflection at
the center of the belt is 7/16" when a 20 lb. load is placed against the belt (see
figure 8, page 11 ).
11. Close cover and replace bolts.
12. Replace belt guard and resume operation.
13. Depress foot clutch pedal, start engine, release foot clutch pedal to engage
belt, and test unit. Readjust pulleys and belt tension if needed.
• Hydraulic units remove hydraulic pump and belts prior to step 3 and replace
prior to step 12.
The models have five greaseable bearings and pivots that require grease every 50
hours:
• Two bearings on the rotor shaft.
• One greaseable bushing on the foot clutch pedal pivot.
• One grease zerk on idler pivot.
• One grease zerk on discharge chute.
1. Service engine according to engine manual. Change engine oil and filter as
recommended in manual.
2. Every 10 hours of operation, all bolts and other fasteners should be checked
for correct torque.
1. Check wheel bolt torque every 10 hours of towing use.
2. Check air pressure in tires every 10 hours of towing. Maximum 60 psi.
3. Check and repack wheel bearings with grease every 12 months.
4. When towing, use a 2 inch trailer ball, and always connect the safety chains.
Make sure trailer hitch bolts are tight and secure.