Supplement Airplane Maintenance Manual
Cessna 172 with TAE 125-02-99 / -114
AMM-20-02
Rev. No:
Rev. Date:
Chapter:
Issue:
Issue Date:
Page:
Content:
20-AMM-24-02
3
06.11.2013
3
16
1
25.08.2014
TROUBLESHOOTING
Table 24-1a Troubleshooting DC Generation
MAINTENANCE PRACTICES
1.
General
These maintenance practices provide instructions to
•
Replacing the alternator
•
Inspecting the main battery
•
Replacing the main battery
•
Charging the main battery
•
Replacing the excitation battery
•
Functioning check of the FADEC backup battery
•
Replacing the FADEC backup battery
2.
Replacing the Alternator
•
Please refer to RM-02-02, Section 71-50 for
instructions on how to exchange the alternator.
Trouble
Check
Corrective Action
Check alternator wiring
Replace alternator wiring
Check alternator fuse
Replace alternator fuse
Check alternator relay
Replace alternator relay
Check alternator switch
Replace alternator switch
Check alternator funcion
Replace alternator
Check excitation battery
Replace excitation battery
Check excitation battery
wiring
Repair wiring
FADEC backup battery
capacity low
Replace Battery
FADEC backup battery
defect
Replace Battery
FADEC backup battery
system wiring defective
Do a test of the FADEC
backup battery system
wiring
Refer to chapter 91 for the
wiring diagrams
Lack of alternator
current
Alternator does not
work correctly without
main battery connected
and switched on
FADEC backup battery
functioning test negative
Note:
For maintenance procedures on items not mentioned herein
refer to RM-02-02.
Summary of Contents for Cessna 172
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