308Service Manual – CS7010™ 52 - Hopper System
Dump Door Actuator Adjustment
There are two stages for adjusting the dump door actuator. The rst is to ensure that the internal
potentiometer is synchronized to the actuator lead screw. The second is to adjust door open position.
Synchronize the Potentiometer
1. Raise the hopper and engage the prop rod for safety.
2. Enter Service Test Mode on the machine, and navigate to the
Output Test menu, followed by the M7 Dump Door test menu
(as shown to the right).
3. Using the Up/Down navigation buttons, open the dump door.
• The Up button retracts the actuator (open door), and
continues for only as long as you hold the button.
4. Continue holding the Up button until one of the following conditions takes place (whichever comes rst):
• Either the actuator reaches its full retracted position, and the internal clutch on the actuator begins
to “ratchet”. (The actuator will make a distinctive ratcheting sound.)
• Or the J2-17 potentiometer voltage shown on the display approaches 0.60 volts. Note that the
actuator may coast slightly when you release the button. So it may overshoot the value unless you
release the button before it reaches 0.60 volts.
The goal of the procedure is to have the actuator fully
retracted (mechanical limit) while the potentiometer
voltage reads between 0.45 to 0.75 volts (0.60 volts is
the target). If this is correct, then stage 1 is complete
and you can jump to the door open adjustment. If
not, then you will have to disconnect the actuator
from the door and make adjustments.
5. Disconnect the yoke from the dump door by
removing the clevis pin.
Note: In the following steps, if you are not
able to rotate the yoke because the
spring is compressed and tight, it
may be necessary to rst extend the
actuator, make the adjustment, and
then retract the actuator to check the
result.
6. If the potentiometer voltage is at the correct
range but the actuator is not bottomed out, then
manually rotate the yoke in full-turn increments until it bottoms out.
• Make sure the sensor ag is facing toward the sensor.
7. If the actuator is bottomed out but the potentiometer voltage is too high, then unscrew the actuator/
yoke to achieve 0.60 volts. Each full turn of the yoke should result in approximately 0.10 volts on the
potentiometer.
8. Reconnect the yoke to the dump door, and verify the adjustment by retracting the actuator in the
Output Test menu, as done previously.
9. Continue on to the Open Door Position adjustment described below.
Output Test
M7 Dump Door
Back
Set
M7 Dump Door % Req
M7 Dump Door A
Off
0
0.0
J2-17 Dump Dr Pos V 0.60
Clevis
Pin
Actuator
Yoke
Sensor
Flag
Sensor
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