Echo 74824 Owners Manual v.3 - Manual (Page 20)

Page 18 6" & 8" Bear Cat Chipper Operator’s Manual
NOTE
Polyuria and lithium based greases are not compatible.
Mixing the two grease types may lead to premature failure
of the chipper.
NOTE
The use of pneumatic grease equipment is not
recommended unless low pressure is assured.
5.9 GREASEABLE BEARINGS AND
PIVOTS
SERVICE & MAINTENANCE
10. Install the four 1/2 inch bolts on each bearing to secure
them to the frame. Tighten bolts to 75 Ft-lb.
11. Slide rotor assembly forward to remove any existing
play in the assembly. Relocate the bushing and rotor
sheave to remove the play in the rotor assembly.
12. Replace drive belt on pulleys and depress the foot clutch
pedal. Check alignment of pulleys and adjust engine
sheave if needed. Release foot clutch pedal.
13. Check belt tension before start-up (see Section 5.5).
14. On hydraulic feed units, replace the hydraulic belt and
tighten the bolts that anchor the hydraulic pump to
mount.
15. Close rotor access cover and replace bolts.
16. Replace belt guard and resume operation.
17. Depress foot clutch pedal, start engine, release foot
clutch pedal to engage belt, and test unit. Readjust
pulleys and belt tension if needed.
It is extremely important to slide the rotor assembly for-
ward to remove any existing play in the rotor assembly.
Failure to do so could result in the chipper blades strik-
ing the chipping anvil. This could result in serious injury
or death.
WARNING
Figure 5.5- Rotor Bearings
Bushing &
Pulley Drive Belt
Hydraulic Belt
Rotor Bearings
Mounted bearings are pre-lubricated at our factory and are
ready for operation.
RELUBRICATION:
Relubrication of bearings is determined by operating
conditions and environment. Relubricate standard bearings
with a LITHIUM based grease. Greasing intervals and
quantities are shown on the next page using the following
symbol:
GREASING INTERVALS:
Bearings in extreme environments will require more frequent
greasing intervals.
GREASE FILL AMOUNTS:
It is preferred that experience dictate fill amounts due to
wide variances in applications, greasing equipment and
operating conditions. The quantities shown on the next page
are recommended amounts. In most cases, it is best to
relube in small amounts, under low pressure, until a thin
bead of fresh grease is visible at the seal lip area.
Care should be taken when greasing bearings to avoid
overfilling. Overfilling can lead to excessive heat and/or
unseating of the seals. Grease should be introduced in small
amounts and under light pressure. Whenever possible, the
bearing should be rotated slowly while grease is added to
ensure equal distribution throughout the raceways.
The chipper models described in this manual have eight (8)
greaseable bearings and pivots that require greasing. Refer
to the Figures 5.6 through 5.11 on the next page for greasing
intervals and quantities.
Quantity Recommended
quantity of grease.
Frequency (i.e. 50 hours).