9820/9830/9835 Service Manual

Model 928 Stacker

removed from the stacker. Be careful not to lose the spring.

17.Slide the front main frame off the tamper plate shaft and gently pull it clear of the stacker.

18.The old lower transport assembly should now be held in place by the four remaining plastite screws on the rear main frame (118475).

19.Remove 4 screws holding the assembly in place, and remove the lower transport assembly.

20.Install the replacement kit.

21.Reassemble in reverse order.

Replace DC Motor

1.Unplug stacker power and stacker-to-knife cable.

2.Remove rear, back, and side covers.

3.Disconnect motor wiring harness at motor terminals 1 and 2.

4.Remove four motor mounting screws, belt, and motor assembly.

5.Reassemble in reverse order.

Replace Stepper Motor

1.Unplug stacker power and stacker-to-knife cable.

2.Remove rear, back, and side covers.

3.Loosen set screws and remove belt speed adjustment knob.

4.Remove belt adjustment potentiometer mounting nut and washer.

5.Remove four screws and electronics cover.

6.Disconnect motor wiring harness at control board connector P1.

7.Remove four motor mounting screws, belt, and motor assembly.

8.Reassemble in reverse order.

Replace Stacker Sensors

The stacker full and stacker jam sensors share the same wiring harness, so replace as an assembly.

1.Unplug stacker power and stacker-to-knife cable.

2.Remove screw attaching stacker full sensor to stacker bed.

3.Remove 2 clips holding sensor wiring harness to the stacker bed.

4.Thread sensor cable through frame to control board.

5.Loosen set screws and remove belt speed adjustment knob.

6.Remove 4 retaining screws and electronics cover.

7.Remove 4 screws holding control board to standoffs.

8.Slide sensor out of transport mounting and thread sensor cable through frame back to control board.

9.Move control board back to expose sensor wiring harness connector.

10.Disconnect wire harness from control board connector CN3 and remove sensor.

11.Reassemble in reverse order.

Replace Power Supply

1.Unplug stacker power and stacker-to-knife cable.

2.Loosen set screws and remove belt speed adjustment knob.

3.Remove belt adjustment potentiometer mounting nut and washer.

4.Remove 4 retaining screws and electronics cover.

5.Remove four power supply mounting screws.

6.Tilt power supply up to disconnect wiring harness at connectors J1 and J2.

7.Remove power supply.

8.Reassemble in reverse order.

Replace Control Board

1.Unplug stacker power and stacker-to-knife cable.

2.Loosen set screws and remove belt speed adjustment knob.

3.Remove belt adjustment potentiometer mounting nut and washer.

4.Remove 4 retaining screws and electronics cover.

5.Disconnect harness connectors at control board connectors J1, J2, and J3.

6.Remove the four screws holding the control board to the standoffs.

7.Disconnect power supply harness at control board connector CN1.

8.Remove control board.

9.Reassemble in reverse order.

Figure D- 6. Power Supply/Control Board.

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TC9830SM Rev. B 7/98 Confidential

July 1998

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Monarch 9820TM, 9835TM, 9830TM manual Replace DC Motor, Replace Stepper Motor, Replace Stacker Sensors, Replace Power Supply

9835TM, 9820TM, 9830TM specifications

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