Rap 2.72 Stacker Finger Lift Cylinder - Challenge CMT-130TC Service Manual

RAP 2.72 Stacker Finger Lift Cylinder

Stacker I/O PWB Output 3
The Stacker finger lift cylinder raises and lowers
the fingered gate that books lean up against
when on the delivery bed (Figure 2-110). The
speed of the cylinder in both directions is con-
trolled by flow control valves that are mounted
near each cylinders port.
Possible Fault Indicators

The fingered gate does not raise or
lower properly.
Initial Actions
Perform RAP 2.20 Pneumatic Pressure.
Check that all cables and air tubing between the
trimmer and Stacker are securely fastened and
are not damaged.
Perform GP 6.14 Speed-Control Air Valves.
Check that all air hoses in the Stacker are con-
nected properly, and are not damaged or
pinched.
Check for loose or damaged wire 77 at the
Stacker electrical panel.
Check that cable #4 is connected to the air valve
properly.
Procedure
1. Remove the lower side panel on the Stacker
and locate the finger lift cylinder. Fully open
the flow control valves near the ports on
each end of the cylinder.
2. Switch the main air ON and main power ON.
The fingered gate should raise up by default.
3. Manually activate the finger valve by press-
ing the actuator button on the valve (Figure
2. Status Indicator RAPs
2-111). Does fingered gate lower com-
pletely?
Y N
Disconnect main power and replace the
valve (PL 5.66 Stacker Air Manifold 58008).
4. Electrically activate the valve by shorting
wire 77 to wire 74. Does the valve actuate
and the fingered gate lower completely?
Y N
Disconnect main power and replace the
valve (PL 5.66 Stacker Air Manifold 58008).
5. Check for loose or damaged cables between
the trimmer and Stacker. Check for proper
hose and wire connections inside the
Stacker. Did this fix the problem?
Y N
Disconnect power and replace the Stacker
I/O PWB (REP 4.26 Accessory PWB Re-
placement).
6. Readjust the flow control valves so that the
fingered gate lowers at a moderate speed
and raises at a slow speed (GP 6.14 Speed-
Control Air Valves).
Figure 2-110. Finger Lift Cylinder
MAY 2019
2-80
Figure 2-111. Finger Valve
CMT-130TC Book Trimmer