Exceeding Of Max. Cylinder Head Temperature; 1) Max. Temperature Exceeded; 2) Excess Temperature Of Over 180 °C (356 °F) - Rotax 914 Series Maintenance Manual

2.7)

Exceeding of max. cylinder head temperature

◆ NOTE:
■ CAUTION:
2.7.1)
2.7.2)
Temperature
Proceed as instructed in
180 °C
Proceed as
instructed
135 °C para
in
0
Effectivity 914 Series
Edition 1 / Rev. 0
MAINTENANCE MANUAL
Any exceeding of the max. admissible cylinder head temperature
must be entered by the pilot into the engine log book, stating
duration extent of excess temperature and pertinent detail.
If the maximum cylinder head temperature is exceeded,
other limits are also often exceeded, e.g. oil temperature.
Please observe the relevant instructions.
Max. temperature exceeded up to 180 °C (356 °F) - briefly
If the max. permissible cylinder head temperature is exceeded briefly
up to 180 °C (356 °F):
- The whole cooling system must be inspeted, repaired or overhauled
in accordance with the instructions for continued airworthiness.
- Inspect all further systems for correct functioning.
Carry out detailed inspection of the affected engine components such
as
- Leakage check on the cooling system.
- Check that the cylinder head attachment is fitted securely. If the
cylinder head nut is loose, proceed as instructed in the following
sec. 2.7.2.
- Check all coolant fittings (feed/outflow) for secure fit.
Excess temperature of over 180°C (356 °F) and/or for
longer than 30 min.
If a cylinder head temperature above 180 °C (356 °F) is reached and/or
for longer than 30 minutes:
para
2.7.2
2.7.1
Operating limit
30 min.
BRP-Rotax
- The whole cooling system must be
inspeted, repaired or overhauled in
accordance with the instructions for
continued airworthiness.
- Inspect all further systems for correct
functioning.
- Detailed inspection of affected engine
components.
- Check compression by carrying out a
differential pressure check.
- All cylinder heads and cylinders must be
removed and subjected to a detailed
check including hardness testing.
See 72-00-00 in the Heavy Maintenance
Manual.
Time
07140
05-50-00
page 10
May. 01/07