BX52R, BX72R, BX102R
3 PH Roller-feed Chipper
Service and Maintenance
57
CAUTION!
Risk of getting hands pinched or wedged
between lower rotor housing and rotor. Turn
rotor slowly and be aware of hand positioning.
W032
2.
Install rotor blades with leading edge out, towards the
ledger blade. Tighten the blade mounting bolts to
80 lbf•ft
(110 N•m)
.
00873
Fig. 74 –
Changing rotor blade
00872
Fig. 75 –
Rotor blade leading edge
7.8 Ledger Knife
Observe ledger knife performance daily. Check the ledger
knife sharpness every 50 hours.
The ledger knife is bolted inside the lower rotor housing
assembly. As the rotor turns, material fed into the chipper is
sheared off at the ledger knife by the rotor blades.
When the corner of the ledger knife facing the rotor blade rounds
over, the blade can be removed and re-installed with a different
corner facing the rotor blade. Once all four corners have been
rounded, remove the knife to sharpen or replace it.
00874
Fig. 76 –
Ledger knife inside lower rotor housing
To obtain the best chipper performance, check the clearance
between the rotor blade and stationary ledger blade every 50
hours.
7.8.1 Ledger Knife Clearance
Use the ledger setting gauge to check knife clearance
. The
thickness of the gauge is the correct ledger blade clearance.
If spacing is in excess of the gauge thickness, adjust the
clearance.
NOTE:
The actual clearance between the rotor blades
and the ledger knife is 1/32"–1/16" (.76–
1.52 mm).
