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Rotax 912S Dead or not ? ....

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miami_guy

Joined: 10 Jan 2007
Posts: 6

Posted: Tue Mar 18, 2008 3:07 pm Post subject: Rotax 912S Dead or not ? ....

I like to know If I have damaged my Rotax 912S.



My A&P changed oil hoses one going from oil tank to oil thermostat the second hose going from oil tank to the oil pump. 



While in the process oil spilled out and I am assuming any oil in the engine was completely drained out. 



The only oil remaining was the one in the oil cooler. The oil filter was replaced and the magnetic oil plug was removed for revision.



I believe after this procedure as per Rotax instructions he should have purged the engine with new oil.



He did not purge the engine as he claims he wasnâ€™t aware of this procedure.



He applied Fresh oil ran the engine for approximately 10- 15 minutes.



I asked if he checked the oil pressure gage and he did not check. I have an electronic Information system and he did not know hot work it and look for oil pressure.



My question is it possible the engine has suffered internal damage do to not purging after it was drained? 



I s there a possibility engine may have pulled new oil since oil cooler was not drained? 



What should be my next step ?



thanks in advance for any help you may offer..

europa504(at)gmail.com
Guest

Posted: Tue Mar 18, 2008 3:42 pm Post subject: Rotax 912S Dead or not ? ....

Get hold of SI-912-018 from www.rotax-aircraft-engines.com and follow  

the procedure.



If, as you say, it has been run, I would start by checking the valve  

clearances as mentioned in paragraph 3.1.3



cheers



Simon



On 18 Mar 2008, at 23:07, miami_guy wrote:

 	  Quote: 	
		   

 >



 I like to know If I have damaged my Rotax 912S.



 My A&P changed oil hoses one going from oil tank to oil thermostat  

 the second hose going from oil tank to the oil pump.



 While in the process oil spilled out and I am assuming any oil in  

 the engine was completely drained out.



 The only oil remaining was the one in the oil cooler. The oil filter  

 was replaced and the magnetic oil plug was removed for revision.



 I believe after this procedure as per Rotax instructions he should  

 have purged the engine with new oil.



 He did not purge the engine as he claims he wasnâ€™t aware of this  

 procedure.



 He applied Fresh oil ran the engine for approximately 10- 15 minutes.



 I asked if he checked the oil pressure gage and he did not check. I  

 have an electronic Information system and he did not know hot work  

 it and look for oil pressure.



 My question is it possible the engine has suffered internal damage  

 do to not purging after it was drained?



 I s there a possibility engine may have pulled new oil since oil  

 cooler was not drained?



 What should be my next step ?



 thanks in advance for any help you may offer..





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=170780#170780

rholder(at)avnet.co.uk
Guest

Posted: Tue Mar 18, 2008 3:50 pm Post subject: Rotax 912S Dead or not ? ....

miami_guy wrote:

 	  Quote: 	
		   

 

 I like to know If I have damaged my Rotax 912S.

 

 My A&P changed oil hoses one going from oil tank to oil thermostat the second hose going from oil tank to the oil pump. 

 

 While in the process oil spilled out and I am assuming any oil in the engine was completely drained out. 

 

 The only oil remaining was the one in the oil cooler. The oil filter was replaced and the magnetic oil plug was removed for revision.

 

 I believe after this procedure as per Rotax instructions he should have purged the engine with new oil.

 

 He did not purge the engine as he claims he wasnâ€™t aware of this procedure.

 

 He applied Fresh oil ran the engine for approximately 10- 15 minutes.

 

 I asked if he checked the oil pressure gage and he did not check. I have an electronic Information system and he did not know hot work it and look for oil pressure.

 

 My question is it possible the engine has suffered internal damage do to not purging after it was drained? 

 

 I s there a possibility engine may have pulled new oil since oil cooler was not drained? 

 

 What should be my next step ?

 

 thanks in advance for any help you may offer..


	


1. Check the EIS yourself for oil pressure with the engine 

running



Clarify your facts



"My A&P changed oil hoses one going from oil tank to oil 

thermostat the second hose going from oil tank to the oil 

pump"



oil thermostats have 4 connections, were the other three 

hoses left in place ?

if there is an oil cooler there would be another two 

connections - same question.



The Rotax procedure is to remove the plugs (or one from 

each cylinder) and all the plug leads. Remove the "from 

the oil tank" hose and fill it with oil, put it back on 

the oil tank, and then turn over the engine on the 

starter, for a max of 10 seconds at a time until the oil 

pressure shows on the guage. Once there is oil at these 

lowish pumping speeds, replace the plus and the leads, 

check the oil level and then start the engine again.



If te engine is a 912S (certified) you needed a Rotax 

certified A&P I would have thought (or at least one who 

knew about the Rotax procedures). If it is a 912ULS 

(uncertified) then the Rotax procedure is rather more 

voluntary.



However the real check is whether you now have oil pressure.



You do not have to drain the oil cooler, it is recognised 

that there will be a little old oil being mixed with the 

new. Draining the oil cooler would make the "purging" more 

important !



2. Get a new A&P



3. Learn how to do it yourself, at least to give guidance 

to anyone else you let touch your plane !



RFWH

miami_guy

Joined: 10 Jan 2007
Posts: 6

Posted: Tue Mar 18, 2008 4:46 pm Post subject: Re: Rotax 912S Dead or not ? ....

Hello Simon and RFWH



1. Yes the other 3 hoses where left in place and oil cooler was never drained.



2. I will check  the valve 

clearances and oil pressure as soon as I am able to get back to the hangar.



3. Should I check for oil pressure by hand propping with plugs removed or should I start engine for 5 to 10 seconds?



4. I plan to check the oil magnetic plug and cut oil filter open to see if there is any evidence of grinding metal residue.  What do you think about this idea? 



5. Really my main concern is that I am not certain if there was a possibility that engine ran dry of oil for 10-15 minutes.



Thanks for the support.

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Tue Mar 18, 2008 5:20 pm Post subject: Rotax 912S Dead or not ? ....

You may want to do a differential pressure test too. Just to be sure there

has been no cylinder scoring.



Noel  



--

_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

stephan(at)scassel.se
Guest

Posted: Wed Mar 19, 2008 12:03 am Post subject: Rotax 912S Dead or not ? ....

Hi "miami_guy"

  

 Download Maintenance Manual 912 Series (Line Maintenance)  : http://www.rotax-aircraft-engines.com/a_searchdoc.aspx

  

 Read 5.2 Oil change and you will read "Draining suction  line, cooler........must be avoided".

  

 If the oiltank has been open and cleaned you may have  allowed air in the system and need "purg" or prime the system with

 pressure.

  

 Have to dash. My Europa XS/912S is  waiting.......

  

 Regards

 Stephan

 LN-STE Norway

   [quote][b]

groups(at)bobcroweaircraf
Guest

Posted: Wed Mar 19, 2008 2:18 am Post subject: Rotax 912S Dead or not ? ....

I would have the engine striped and inspected and send the bill to the A&P.



The A & P should have never worked on your aircraft without reading the 

correct engine manual.

---

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Wed Mar 19, 2008 7:13 pm Post subject: Rotax 912S Dead or not ? ....

A valid point... And to take it a bit further he shouldn't have gone near

the engine without first having at least a basic course on it.



Noel



--

_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

miami_guy

Joined: 10 Jan 2007
Posts: 6

Posted: Tue May 13, 2008 7:47 pm Post subject: Re: Rotax 912S Dead or not ? ....

Hello I want to thank all who directed me in the right direction. 



I have since attended Rotax School and I have become much more informed.



After doing several tests including oil pressure, differential compression test, Magnetic plug check ,and valve  tappet check everything turned out ok.



For anyone reading and taking notes my lesson here is Rotax are very different than any other general aviation engine when hiring someone to do work on your Rotax engine be certain they are trained and qualified or you may be in for a bad surprise or two.

Catz631(at)aol.com
Guest

Posted: Wed May 14, 2008 3:36 am Post subject: Rotax 912S Dead or not ? ....

I am glad you went to the Lockwood school and your engine is ok ! I talked with you about your engine on the phone a few months ago and was wondering about the results and if you attended school. It is a fantastic course !

                                                    Regards,

                                                                  Dick Maddux

                                                                  pensacola,Fl



Wondering what's for Dinner Tonight? Get new twists on family favorites at AOL Food.

  [quote][b]

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