912S Reduced Oil Pressure.
in 912iS Technical Questions
14 years ago
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Re: 912S Reduced Oil Pressure.
by Rob Seaton » 13 years ago
465180 has metric M10x1 threads.
all the old sensors including the honeywell and VDO had 1/8NPT.
If you need to install a new 465180 sensor you can tap your old oil pump housing to cut new M10x1 threads.
Having straight threads allows the sensor to contact the housing; this greatly reduces the G forces (vibration) on the sensor.
I still prefer to remote mount the sensor.
Rob
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Re: 912S Reduced Oil Pressure.
by Anders Eriksson » 13 years ago
I have now read the text again in this service instruction. The oil pump housing in todays engines has part number 911 815 and is for M10x1 thread for the sensor. The text also says that this house has been used for an earlier sensor 956 413. That means that sensor also has M10x1.
The earlier house 811 809 had a thread 1/8" NPT.
Now I wounder, what year (or better serial number)was the new house for sensor with M10x1 introduced?
Anders
465180 has metric M10x1 threads.
all the old sensors including the honeywell and VDO had 1/8NPT.
If you need to install a new 465180 sensor you can tap your old oil pump housing to cut new M10x1 threads.
Having straight threads allows the sensor to contact the housing; this greatly reduces the G forces (vibration) on the sensor.
I still prefer to remote mount the sensor.
Rob
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Re: 912S Reduced Oil Pressure.
by bill martin » 13 years ago
Anders,
Just take the sensor out and look at the threads.
Bill.
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Re: 912S Reduced Oil Pressure.
by Anders Eriksson » 13 years ago
How can you look at the threads and see what it is?
Why is it so hard to get the information when Rotax shifted from 1/8 to 10mm on 912ULS?
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Re: 912S Reduced Oil Pressure.
by MARK JACKSON » 13 years ago
Anders
Either look at the information on SI-912-020 R6 section 79-00-00. and see if your engine is one of the new ones, or unscrew the sender from the oil pump housing and measure the diameter of the thread.
If it it the new type of sender the it will be M10, if it is a VDO or Honeywell sender with flying leads then it will be 1/8 NPT
Mark
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