American-Lincoln
1-39
3366XP
CDC MAINTENANCE
CDC STEPPER MAINTENANCE
Every 50 hours of machine operation remove the accumulator vent valve and the stepper reset valve from the
pilot valve stepper. Coat the inside of the stepper with a spray of liquid silicon lubricant. Put the two valves
back into position on the pilot valve stepper.
CDC HOPPER FILTER
Replace the pleated filter. Properly align filter segment dividers to face of clean air plenum. Torque filter
clamping bolt to compress seals. Do not over torque and collapse filter.
CDC EXHAUST VALVE SEALS
Refer to the repair kit. At installation, properly orient diaphragm to valve seat and pilot orifice pin. Evenly
torque retainer cap screws.
NOTE
Thoroughly clean and avoid contamination.
CDC STEPPER SEALS
Refer to the repair kit.
NOTE
Thoroughly clean and avoid contamination.
CHARGING THE CDC STEPPER ACCUMULATOR
Newly installed systems and service repair may permit valve steppers that uncharges the accumulator to
extend the stepper cam pilot pin. This pilots to open an exhaust valve. The valve will bark or chatter as the
manifold attempts to fill with compressed air.
Correct this condition by charging the accumulator. With the compressor at operating speed, place index
finger over the the stepper case vent valve opening for 5 to 8 seconds. Too sudden release of the case vent
will continue unstable valve action.
Delayed release of the case vent port will overcharge the accumulator to single stroke the exhaust valve pilot.
Correct this condition by pushing the stepper accumulator vent valve.
STEPPER RESET VALVE
ACCUMULATOR VENT VALVE
PILOT VALVE STEPPER
P4965
FIGURE 25
GENERAL MACHINE MAINTENANCE