Engine Leak Check
100711-00
Instructions to perform a leak check on the Rotax 912 iS Sport (912 iS 2) engine.
Applicable Aircraft Serial Numbers
All
Type of Maintenance
Line
Level of Certification
Owner/Pilot
Task Specific Training Required
No
Special Tools Required
None
Parts Required
None
Aircraft System and Number
13—Propulsion
Safety Equipment
As Needed
Consumables
None
1. Inspect oil pump rotary seal on the water pump for leakage. For further information on ensuring filter secure, see the Rotax 912 iS Sport (912 iS 2) Maintenance Manual for Line Maintenance 12.3.1 section 12-20-00.
Note:
Due to the design of the rotary seal, the manufacturer tolerates a certain amount of leakage. If the leakage is in excess of the limit, the rotary seal must be renewed.
Tolerated leakage:
For this check the engine must be operated until all temperatures have stabilized for a period of 5 minutes. At that point shut down engine and ensure the ignition is switched off and engine secured against unintentional operation. Coolant must not drip through leakage bore, located at the base of the ignition housing, for a period of 1 minute after the engine has been stopped. In case this leakage test can not be passed, the rotary seal must be renewed.
Verification Method
Inspect the engine for oil, fuel, or coolant leaks and repair as necessary.
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