Leakage Check - Rotax 912 iSc Maintenance Manual

3) Leakage check

General note
Visual inspection of the whole engine for leaks. If leaks are visible, locate
the cause and remedy the fault.
NOTE:
Instruction
1
2
3
4
Checking water pump for leaks.
Water pump
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).
Inspect fuel lines, their connections and screw fasteners. Look for scuff-
Fuel lines
ing marks or other damage.
Complete a detailed visual inspection. When checking steel fuel lines (1),
pay attention to the connection areas (2). Look for leaks and cracks.
See
Effectivity: 912 i Series
Edition 1/Rev. 0
BRP-Powertrain
MAINTENANCE MANUAL
Leaking connections can lead to engine problems or
NOTICE
WARNUNG
engine failure!
If a leak is suspected, the following steps must be taken:
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.
Secure aircraft against unauthorized operation.
After shut down of engine no liquid must drip down.
Avoid overstretching the fixing elements. Always
NOTICE
WARNUNG
comply with the specified torque!
Fig. 1.
Procedure
12-20-00
page 7
January 01/2012