Service and Maintenance
BX52R, BX72R, BX102R
3 PH Roller-feed Chipper
56
7.5 PTO Shaft Maintenance
Grease the PTO shaft every 8 hours.
00584
Fig. 71 –
PTO Shaft
The PTO shaft is designed to collapse and extend as the
machine goes through its operational range.
Heavy-duty plastic shielding encloses the driving components.
As a safety measure, it is designed to stay stationary as the
driveshaft turns.
Annual disassembly, cleaning and inspection is recommended
to make sure that all components function as intended.
Shear Pin
The PTO shaft has a shear pin on the implement end, at the
input yoke. The shear pin is designed to break in the event the
drive system is overloaded to protect other critical components.
00870
Fig. 72 –
PTO Shear Pin
The drive system is designed to function well without failing the
shear pin. If it does fail, generally it is because material is being
fed too fast or something very hard has been jammed into the
rotor or between the blades.
Replace broken shear pins with one the same size. Always
determine the cause of the problem and correct it before
resuming work. Shear pins are available from your distributor or
dealer.
7.6 Twig Breaker
Inspect the twig breaker for damage, bent or missing teeth
every 50 hours.
The twig breaker is located inside the lower rotor housing.
Material in the chipper is broken up into smaller pieces as the
discharge paddles rotate past it.
A damaged or worn twig breaker should be replaced.
00871
Fig. 73 –
Twig Breaker
7.7 Rotor Blades
Check rotor blade sharpness daily.
If the chipper is not pulling the material or material has to
pushed into the chipper, the rotor blades are probably dull.
Reverse or sharpen the blades if the cutting edge becomes dull.
Check blade sharpness more often if processing material with a
lot of sand, soil or dirt in it.
Keeping the blades sharp reduces the amount of power required
during operation.
Sharpening Rotor Blades
1.
Remove the blades from the rotor to sharpen. Sharpen at a
45° angle to provide the best cutting effect.
IMPORTANT! Make sure equal amount of material is
removed from each blade when sharpening to maintain
proper rotor balance.
