Rap 2.23 Gripper Rotator Lock Cylinder - Challenge CMT-130TC Service Manual

RAP 2.23 Gripper Rotator Lock Cylin-
der
Output 5
The rotator lock cylinder locks the gripper as-
sembly into position rotationally. This ensures
that the books will be cut squarely each time.
The cylinder retracts whenever the gripper as-
sembly rotates. Its location can be seen in Fig-
ure 2-30.
Possible Fault Indicators

Book not cutting square.

Gripper does not rotate properly.
Initial Actions
Perform RAP 2.20 Pneumatic Pressure.
Perform GP 6.14 Speed-Control Air Valves.
Check for air leaks and disconnected or pinched
hoses.
Check for loose or damaged wire 59 at the elec-
trical panel.
Check that the cable connector on valve #3 is
connected properly.
Procedure
1. Switch the main air ON and main power ON.
2. Manually activate valve #3 by pressing the
actuator button on the valve (Figure 2-31).
Does the rotator lock cylinder retract?
Y N
Disconnect power and air, then replace
valve #3 (PL 5.22 Pneu. Manifold Asm.
59012-1).
3. Electrically activate valve #3 by shorting wire
59 to wire 74. Does the cylinder retract?
CMT-130TC Book Trimmer
Y N
Disconnect power and replace valve #3 (PL
5.22 Pneu. Manifold Asm. 59012-1).
4. Disconnect power and replace the main
PWB (REP 4.23 Main PWB Replacement).
Figure 2-30. Gripper Rotator Lock Cylinder
MAY 2019
2-31
Figure 2-31. Pneumatic Valve #3
2. Status Indicator RAPs