Sterling BP818, BP814, BP810 manual Page 37 of

3.Pivot the in-feed hopper completely back to gain clear access to the cutting chamber, and clear any process material or foreign objects from between the knives.

4.Rotate the rotor so that the rotor knives will not interfere with the removal of the bed knife. Using a wooden block, block the rotor to prevent it from rotating while removing the knives.

5.Loosen the lock nuts and back off the adjustment screws. (See Error! Reference source not found..)

6.Loosen and remove the bed knife shield bolts and remove the shield, positioned above the knife. The remaining bed knife bolts and bed knife may now be removed.

7.Perform the above steps to remove the rear (upstroke) bed knife as well.

NOTE: Before replacing the bed knife with new or sharpened knives, wipe the knife seats on the knife block, being sure to clean off all process material. The tapped holes in the knife block (used for holding the knives in place) should be clear of any dirt, oil, or process material.

8.Install new or sharpened bed knives on each knife seat, making sure that the rotor is blocked to prevent it from rotating while installing each knife. Be sure to place the bed knives in the correct positions⎯the rear (up stroke) bed knife must be placed with the extended cutting edge on the bottom, and the front (down stroke) bed knife should be placed with the cutting edge on the top.

9.Before re-installing the knife bolts, wipe them clean with a lightly oil-damped cloth. Do not leave an oil film on the bolt since lubrication can adversely affect the stress on the bolt when torqued to the specified values. It is recommended that the knife bolts be replaced with each new set of knives. This will reduce the risk of bolt failure due to overstretching. Always use the specified replacement bolts.

10.Tighten the bolts that hold just the bed knife, enough to keep the knife in place, while still allowing the adjusting screws to move the knife forward.

11.Adjust the knife gaps with the rotor knives, following Steps 8- 12 in Section 6-4.

12.Replace the shields in position above the bed knives. The shield on the front (down stroke) bed knife should be positioned so that the inside edge is set back approximately 1/32” from the cutting edge below it. Replace the remaining bolts and torque.

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