BRP-Rotax
MAINTENANCE MANUAL LINE
LEAKAGE CHECK
General note
ATTENTION
Leaking connections can lead to engine problems or engine failure!
Visual inspection of the whole engine for leaks. If leaks are visible, locate the cause and
remedy the fault.
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 qual-
ity of the coolant).
NOTE
If a coolant leak is suspected, the following steps must be taken:
Step
Procedure
1
Clean the engine.
2 Operate the engine until the temperatures have stabilized for a period of 5
min. (engine oil temperature between 50 ° to 70 °C (122 °- 158 °F).
3
Switch “OFF“ ignition and secure engine against unintentional operation.
Secure aircraft against unauthorized operation.
4
For a period of 1 minute after the engine has been stopped, no coolant
must drip down.
Coolant hoses Check coolant hoses and connections and fittings for leakage. Examine the surrounding
area to see if there are any leaks!
Hose clamps,
kinks
Check all hoses, particularly in the area of the hose clamps and hose connections, for po-
rosity, damage and kinks. If damage is detected, replace hose immediately.
Fuel line Inspect fuel line (steel), their connections and screw fasteners. Look for scuffing marks or
other damage.
ATTENTION
Avoid overstretching the fixing elements. Always comply with the specified
torque!
Complete a detailed visual inspection. When checking steel fuel lines (1), pay attention to
the connection areas (2). Look for leaks and cracks.
Effectivity: 912 i Series
Edition 2/Rev. 0
12–20–00
Page 5
September 01/2018
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