Leakage Check - Rotax 912 Series Maintenance Manual

4) Leakage check

General note
Visual inspection of the whole engine for leaks. If leaks are visible, locate
the cause and remedy the fault.
Instruction
NOTES:
1
2
3
4
Water pump Checking water pump for leaks.
If the leakage bore, located at the base of the ignition housing, is dripping
oil, the oil seal on the water pump shaft may be defective and must be
replaced. In the case of coolant drips at the leakage bore, the coolant
mechanical seal must be replaced (inspect the quality of the coolant).
Fuel lines Inspect fuel lines, their connections and screw fasteners. Look for scuff-
ing marks.
Detailed visual inspection specially on steel fuel lines in the area of con-
nections (fittings) (2) for leaks and cracks is necessary. See
Effectivity: 912 Series
Edition 3 / Rev. 1
BRP-Powertrain
MAINTENANCE MANUAL
Leaking connections can lead to engine problems or
NOTICE WARNUNG
engine failure!
If a leak is suspected, then the following check is possible:
Step
Cleaning the engine.
Operate the engine until the temperatures have stabilized for a period of 5
min (engine oil temperature between 50 to 70 °C (122 - 160 °F).
Switch off ignition and secure engine against unintentional operation. Se-
cure aircraft against unauthorized operation.
For a period of 1 minute after the engine has been stopped, no liquid must
drip down.
Avoid overstretching the fixing elements. Always
WARNUNG
NOTICE
comply with the specified torque!
Procedure
12-20-00
Fig. 4.
page 11
January 01/2013