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-71-02
3
06.11.2013
15
46
1
25.08.2014
Table 71-7a Troubleshooting / Power Delivery
15
Engine does
not reach
target RPM or
load during
ground run
15.1
Verify gearbox oil
temperature >50°C
Check engine instrumentation or
connect FADEC Service Tool and
check "Tgear"
Wait for gearbox oil to heat
15.2
Verify Manifold
sufficient pressure
Connect FADEC Servicing Tool
while performing ground run and
reproducing the problem (at max.
power). Compare "MAP" to
"LiMAPTar". If capable, do so by
generating graph. Deviation must
be /- 50 mbar.
Proceed to Code 30, "Induction /
Exhaust System"
15.3
Verify Propeller in low
pitch
Remove connector from propeller
control valve (gold valve on
gearbox). Perform full power
ground run. Engine should reach
RPM at or above specification of
Operating Manual
Adjust propeller low pitch stop if
engine still does not reach target
RPM. Refer to MT propeller
manual for instructions. If engine
reaches target RPM without
connector, proceed to next step
15.4
Verify CSU supply
pressure = 20 bar
Install gauge in oil line between
combi pump and CSU. Start
engine, and verify that pressure is
20 bar +/- 1 at all power settings
with 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.
15.5
Check prop control
valve
Replace prop control valve
Code
Indication
Code
Task/Check
Check by
Corrective Action
Power Delivery
Содержание Cessna 172
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