ROTAX Service Bulletin ASB-912-060UL
Issued Jan 26, 2012
Rotax releases a MANDATORY Alert Service Bulletin
ASB-912-060/914-043 Checking of the oil pump fixing bolts for correct torque
This Alert Service Bulletin affects a small number of recently produced 912 & 914 series engines which may have an issue with inadequate torque on the oil pump fixation bolts. Checking of these fixation bolts for correct torque and any signs of oil leakage must be conducted before next engine run or flight. Serial numbers of engines affected can be found within the Bulletin for your specific 912 or 914 engine series type. If your engine was produced before September 2011, it is not affected by this ASB. In any case, the engine serial number is always the final reference.
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My Summary:
Check to see if the oil pump is leaking and check the bolt torque.
Serial numbers for 912ULS
are 6,778,908 to 6,788,932
and 6,778,934 to 6,778,958
and 6,779,478 to 6,779,502
and 6,779,504 to 6,669,511
If the pump is leaking and the bolts are loose, there are other checks to make.
Issued Jan 26, 2012
Rotax releases a MANDATORY Alert Service Bulletin
ASB-912-060/914-043 Checking of the oil pump fixing bolts for correct torque
This Alert Service Bulletin affects a small number of recently produced 912 & 914 series engines which may have an issue with inadequate torque on the oil pump fixation bolts. Checking of these fixation bolts for correct torque and any signs of oil leakage must be conducted before next engine run or flight. Serial numbers of engines affected can be found within the Bulletin for your specific 912 or 914 engine series type. If your engine was produced before September 2011, it is not affected by this ASB. In any case, the engine serial number is always the final reference.
+++++
My Summary:
Check to see if the oil pump is leaking and check the bolt torque.
Serial numbers for 912ULS
are 6,778,908 to 6,788,932
and 6,778,934 to 6,778,958
and 6,779,478 to 6,779,502
and 6,779,504 to 6,669,511
If the pump is leaking and the bolts are loose, there are other checks to make.