Rotax MML-912 - Exceeding of Max. Cylinder Head Temperature

d02877.fm
MAINTENANCE MANUAL
BRP-Powertrain
Effectivity: 912 Series
Edition 2 / Rev. 0
05-50-00
page 11
October 01/2009
3.4) Exceeding of max. cylinder head temperature
General note
NOTES: Any exceeding of the max. admissible cylinder head tem-
perature must be entered by the pilot into the engine log
book, stating duration extent of excess temperature and
pertinent detail.
Graphic Overview and proceed:
Fig. 2 07140
Exceeded up to
180 °C (356 °F)
Ta ble 1.

WARNUNG
NOTICE
If the maximum cylinder head temperature is exceed-
ed, other limits are also often exceeded, e.g. oil tem-
perature. Please observe the relevant instructions.
180 °C
(356 °F)
0
30 min.
Time
Proceed as instructed
in table 2
Proceed as
instructed in table 1
Operating limit
(See Operators Manual 912 Series)
Max. temperature exceeded up to 180 °C (356 °F) - briefly
Step Procedure
1 The whole cooling system must be inspected, repaired or overhauled in
accordance with the BRP-Powertrain instructions for continued airworthi-
ness.
2 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 cylin-
der head nut is loose, proceed as instructed in sec. “Excess tempera-
ture of over 180 °C (356 °F) and/or for longer than 30 min.“
- Check all coolant fittings (feed/outflow) for secure fit.