Echo 74500 Owners Manual v.4 - Manual (Page 19)

5" and 8" Skid Steer Chipper Owner's Manual 17
SERVICE & MAINTENANCE
BeFOre iNSPeCtiNg Or ServiCiNg aNy Part OF tHiS MaCHiNe, SHut OFF POWer SOurCe,
diSeNgage tHe HydrauliCS aNd Make Sure all MOviNg PartS Have COMe tO a COMPlete StOP.
Warning
the chipping blades should clear the anvil by 1/16 to 1/8
inch. To adjust the blade clearance, proceed as follows:
Adjust the anvil by loosening the two (74500) or three
(74800) anvil bolts.
On the 74500, move the anvil assembly in or out by
turning the nuts on the block adjuster weldment.
On the 74800, with the three anvil bolts loosened,
adjust the anvil to the desired position.
if the anvil cannot be moved to specifications due to
wear, rotate the anvil or replace the anvil.
Secure all hardware and adjust to torque.
1.
2.
3.
4.
5.
Figure 5.3 - Anvil and Chipper Blade Clearance
remove any accumulated material from the blade
pocket and the bottom of the chipper blade.
reinstall the chipper blades and tighten the bolts to a
torque of 25 Ft-lbs. (74500) or 120 Ft-lbs. (74800).
Check the blade/anvil clearance and adjust if necessary.
Close the chipper housing and secure with removed
bolts to a torque of 25-28 Ft-lbs.
reconnect machine hydraulics.
1.
2.
3.
4.
5.
it is important to ensure that the minimum gap between
the chipping anvil and all chipping blades is 1/16". all
chipping blades should be rotated until even with the
chipping anvil and then measured. Failure to do so
can result in the chipping blades striking the chipping
anvil causing serious injury or death.
Warning
5.5 insTalling The blades
5.6 seTTing blade clearance
5.7 clearing a Plugged roTor
The feed roller lift jack is used to raise the feed roller if
chipping material becomes wedged in or behind the feed
roller. raise the feed roller and the chipper housing to
safely remove the material.
Stop skid steer engine, disengage hydraulics, and
allow machine to come to a complete stop.
Position the chipper chute to the side of the chipper.
remove the two bolts on the chipper blade access
cover.
tip the cover away from the chipper to expose the
rotor and the blades.
Turn the check valve located on the bottom of the jack
clockwise, engaging the jack.
remove the lock pin from its storage posistion (see
figure below).
Pump the handle to raise the feed roller until the lock
pin position aligns with one of the support bracket
holes.
Secure the position by putting the lock pin through the
support bracket and lock pin position. this will ensure
the feed roller cannot fall from the upright position.
Clear the unit of debris.
to lower the feed roller support, remove the lock
pin and then turn check valve counterclockwise to
disengage the pump.
replace lock pin in storage position.
leaving
The lock Pin in anY oTher PosiTion maY
inTerfere WiTh feed roller oPeraTion.
lower access cover and reattach the two bolts.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Figure 5.4 - Feed Roller Lock