Old Flywheel Interface Board - Removal Procedure
Illustration 1 | g00850805 |
- Disconnect the 24 V power cable from "J1" (10).
- Disconnect the APC ribbon cable from "J3" (8) .
- Disconnect the APC ribbon cable from "J2" (7) .
- Disconnect the cable for the vacuum sensor from "J10" (5) .
- Disconnect the cable for the top bearing thermistor from "J7" (4) .
- Disconnect the top flywheel harness from "J5" (3) .
- Disconnect the Comm/Accel ribbon cable from "J9" (9) .
- Disconnect the cable for the bottom bearing thermistor from "J6" (2) .
- Disconnect the bottom flywheel harness from "J4" (1) .
Note: If the flywheel interface board is being replaced with a board with the same revision, proceed to "Old Flywheel Interface Board - Installation Procedure".
Note: If the flywheel interface board is being replaced with a board with a newer revision, proceed to "Cable and Harness - Removal Procedure".
Cable and Harness - Removal Procedure
Note: Use this procedure if the flywheel interface board is being replaced with a board with a newer revision.
- Remove yellow cables for the thermistor that are located at the top and bottom of the flywheel.
- Put the cables aside.
- Remove harnesses from the top and the bottom of the flywheel and set aside.
- Remove the three mounting screws on the flywheel interface board and remove the board.
- Proceed to "New Flywheel Interface Board - Installation Procedure".
Old Flywheel Interface Board - Installation Procedure
- Install the flywheel interface board.
- Install the three mounting screws on the flywheel interface board.
- Connect the bottom harness for the flywheel to "J4" (10) .
- Connect the cable for the bottom bearing thermistor to "J6" (2) .
- Connect the Comm/Accel ribbon cable to "J9" (9) .
- Connect the cable for the top bearing thermistor to "J7" (4) .
- Connect the cable for the vacuum sensor to "J10" (5) .
- Connect the APC ribbon cable to "J2" (7) .
- Connect the APC ribbon cable to "J3" (8) .
- Connect the 24 V power cable to "J1" (10) .
- Calibrate the hall effect sensors.
Proceed to Systems Operation, Testing and Adjusting, "Flywheel Telemetry - Calibrate".
New Flywheel Interface Board - Removal Procedure
Note: This procedure is for units with Load Cells in the Flywheel.
Illustration 2 | g00850747 |
- Disconnect the 24 V power cable from "J1" (11) .
- Disconnect the Comm/Accel ribbon cable from "J9" (3) .
- Disconnect the APC ribbon cable from "J3" (10) .
- Disconnect the APC ribbon cable from "J2" (7) .
- Disconnect the bottom flywheel harness from "J4" (1) .
- Disconnect the cable for the bottom bearing thermistor from "J6" (2) .
- Disconnect the wiring harness for the top of the flywheel from "J5" (4) .
- Disconnect the cable for the top bearing thermistor from "J7" (5) .
- Disconnect the cable for the vacuum sensor from "J10" (6) .
- Loosen all screws (8) .
- Disconnect the bottom flywheel harness ground lug from "J13" (12) .
- Disconnect the top flywheel harness ground lug from "J12" (9) .
- Remove the board from the chassis.
New Flywheel Interface Board - Installation Procedure
Note: The cables have shielding and the end of the shield is equipped with a tab that must be in electrical contact with the chassis. These tabs will be installed as the board is mounted.
- Attach the new board to the chassis by using the uppermost mounting hole. Do not tighten this screw completely.
- Connect the top flywheel harness ground lug to "J12" (9) .
- Connect the bottom flywheel harness ground lug to "J13" (12) .
- Tighten all screws in order to secure the board in place.
- Connect the cable for the vacuum sensor to "J10" (6) .
- Connect the cable for the top bearing thermistor to "J7" (5) .
- Connect the top flywheel wiring harness to "J5" (4) .
- Connect the cable for the bottom bearing thermistor to "J6" (2) .
- Connect the bottom flywheel harness to "J4" (1) .
- Connect the APC ribbon cable to "J2" (7) .
- Connect the APC ribbon cable to "J3" (10) .
- Connect the Comm/Accel ribbon cable to "J9" (3) .
- Connect the 24 V power cable to "J1" (11) .