Repair - Honeywell RESCU 406AFN Component Maintenance Manual With Illustrated Parts List

1. General
Repair of the RESCU 406AFN Emergency Locator Transmitter is limited to the replacement of any
LRU found to be faulty in accordance with the Fault Isolation Flowcharts (refer to Figures 103 to 105)
and/or battery replacement.
A. LRU Replacement
Replace any faulty LRU by referring to the instructions in Appendix A. After replacing the faulty
LRU with the new LRU, make sure that the Installed System Tests in TESTING AND FAULT
ISOLATION (page 101) are done.
B. Battery Replacement (Refer to Figure 601)
NOTE: The battery must be replaced every 10 years. The expiration date is written on the
Transmitter Unit label. It is recommended that the battery also be replaced if the total
cumulative false activation/transmission time is estimated to be greater than 1 hour. (This
does not include the effect of usual monthly self-tests.)
(1) Removal of Battery Pack
(a)
(b)
(c)
(d)
(2) Handling of Battery Pack
For proper handling and other safety-related information on the battery, refer to the
Material Safety Data Sheet (MSDS) in Appendix B.
In addition, the battery pack cells, must not be:
(a)
(b)
© Honeywell International Inc. Do not copy without express permission of Honeywell.
COMPONENT MAINTENANCE MANUAL
1152682

REPAIR

Remove the transmitter unit from the aircraft mounting position.
Remove eight screws securing the battery pack cover to the transmitter unit and
remove the cover.
CAUTION: GRASP BOTH
CONNECTOR TO PULL APART. DO NOT PULL ON
CONNECTOR WIRES TO DISCONNECT BATTERY PACK
CONNECTOR.
Disconnect battery pack connector.
Unfold battery pack pull-tabs and remove battery pack by pulling tabs straight up.
Deformed (through excessive external pressure to the cell).
Short-circuited (by shorting the positive battery pack terminal to the negative
terminal).
ENDS OF THE BATTERY
23-24-02
PACK
Page 601
Oct 27/06