Sterlco ST500 Series Central Granulator - Manual (Page 46)

46
SETTINGS AND ADJUSTMENTS
SECTION 4-12
Adjusting or Replacing Rotor Knives
REMOVE THE MOUNTING SCREWS
Loosen the rotor knife screws with a 30 mm socket mounted
on a breaker bar (These screws are tightened to a torque of
472 ft lbs (640 Nm) so make sure you have the proper
breaker bar (a four foot long (1.2 m) bar with a 3/4 inch (19
mm) drive is suggested. Make sure you have solid footing
while you apply the breaking force.
Remove the mounting screws from the right rotor knife with
a suitable socket wrench.
REMOVE THE ROTOR KNIVES
Lift the right knife off from the rotor and repeat the process with the left rotor knife.
Remove the rotor-locating pin, turn the rotor to bring the next knives into position for
removal, insert the locating pin to hold the rotor in this position. Repeat the process for the
remaining knives.
CLEAN PARTS FOR REASSEMBLY
Clean the rotor knife seats with a stone or other
non-mar- ring tool. Make sure that the backs of the
knife seats are clean so that the rotor knife can be
placed squarely against them.
Wipe the screws with lightly oiled cloth, do not
leave an oil film since lubrication can adversely
affect the stress on a screw installed to a fixed
torque value.