BOARD ASSEM. 9X9661 - Caterpillar

Do not perform any cutter tooth replacement, and do not perform service or maintenance on the rotor, the rotor hood, or the chain cases until steps 1 to 10 are completed.Failure to follow these instructions could allow the rotor, chamber, or door to drop resulting in serious personal injury or death.1. Set the parking brake on the propel system.2. Raise the rotor to the TRAVEL position to clear any material that may be trapped between the cutter bits and the paddles.3. Tilt the rotor chamber forward, and raise the rear door.4. Reduce the engine speed to LOW idle.5. Disengage the rotor drive.6. Turn the ignition OFF in order to stop the engine,7. Turn the ignition key to the ON position. Do not start the engine.8. Remove the padlock from the circuit breaker box, and open the cover for the circuit breaker box. Place the rotor service switch in the SERVICE position. Close the circuit breaker box cover and install the padlock.9. Engage the rotor service lock T bar that is located on the left chain case on the lift cylinder.10. Secure the rear door and mixing chamber in position, by engaging the rear door service pin.11. Do not start the engine again until all of the services are completed and all personnel are clear from the rotor area.12. Remove the rotor lock and disengage the rear door service pin.13. Remove the padlock from the circuit breaker box. Open the cover of the circuit breaker box. Place the rotor service switch in OPERATE position. Close the cover for the circuit breaker box and install the padlock.14. Sound the horn three times prior to starting the engine.
Illustration 1 g03645658
Side rotor access door (1).
Use a hammer to disengage the pin in order to open access door (1).
Illustration 2 g03645662
Inspect side cutter bits (2). Wear a hard hat and protective glasses. Additional protective equipment may also be required. Use a hammer and a punch to remove a worn holder or a damaged holder.The bits for the rotor should be checked for wear. The bits for the rotor should be replaced if the distance from the holders of the rotor bits to the tip of the bits for the rotor is 32 mm (1.26 inch) or less. The bits for the rotor should be replaced if the distance from the exposed carbide tip is 32 mm (1.26 inch) or less.Check the holders for the bits for cracks. Check the holders for the bits for breaks. Check the holders when you check the bits. When the bits for the rotor need to be changed, the bits should be changed as a group. You should change the bits as a group so that all of the bits will be the same length. When the bits for the rotor are not the same length, the long bits will wear faster. When the bits for the rotor are not the same length, the long bits will break. Save bits that are worn in order to replace bits that are