Supplement Airplane Maintenance Manual
Cessna 172 with TAE 125-02-99 / -114
AMM-20-02
Chapter:
Issue:
Issue Date:
Page:
Content:
20-AMM-71-02
3
06.11.2013
16
46
Rev. No:
Rev. Date:
1
25.08.2014
Table 71-8a Troubleshooting / Engine Speed Regulation
Code
Indication
Code
Task/Check
Check by
Corrective Action
16
Overspeed (for
more than 5
seconds after
application of
power)
16.1 Check gearbox oil level
Replenisch gearbox oil / Contact
TAE if gearbox has been operated
with low oil level
16.2
Have aggressive /
negative G maneuvers
been executed
Wait for gearbox oil to settle
16.3 Check CSU oil supply
Remove hose from gearbox oil
pump to CSU. Oil should leak
from hose
Prime CSU by filling hose with oil
Note
: If CSU supply pressure is
30 bar or more, contact TAE
Support Hotline
16.4
Verify CSU supply
pressure =20 bar
Install gauge in oil line between
Dual Stage Pump and CSU. Start
engine, and verify that pressure is
20 bar +/- 1 at all power
settingswith warm gearbox.
Adjust CSU supply pressure at
black bleed valve on CSU block.
Close inner screw approximately
quarter turn for an increase of 1
bar.
16.5
Change gearbox oil
filter
Replenisch gearbox oil / Contact
TAE if gearbox has been operated
with low oil level
16.6
Check prop control
signal
Refer to instructions to verify
actuator / harness
16.7
Replace prop control
valve
Engine Speed Regulation
Summary of Contents for Cessna 172
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