Matronics Email Lists Forum Index Matronics Email Lists
BBS Forum Interface to the Matronics Email Lists
 
 Get Email Distribution Too!Get Email Distribution Too!    FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Venting (Purging) of the Rotax 912 engine per SI-04-1997 R3

 
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> RotaxEngines-List
View previous topic :: View next topic  
Author Message
hgmckay



Joined: 23 May 2006
Posts: 366

PostPosted: Mon Jul 17, 2017 4:45 am    Post subject: Venting (Purging) of the Rotax 912 engine per SI-04-1997 R3 Reply with quote

Gentlemen,

I have a question concerning the above SI. On page 3 under section 3) we are instructed to “Disconnect negative terminal of aircraft battery”. Then in section 3.1.1) we are instructed to turn the engine in the normal direction until the “oil pressure rises on the oil pressure gauge”. Since the oil pressure gauge is electrical (connected to the oil pressure sensor by an electrical “wire”) how can the gauge measure or indicate anything if it it not connected electrically (i.e. no battery????)?

Hugh G. McKay III, P.E. Fellow, L.M. ASCE
Senior Consultant
Worldwide Engineering Inc.
4090 North NC Hwy. 16
Denver, NC 28037

Ph. 704-661-8271
Fax 704-483-5466
email hgmckay(at)bellsouth.net
http://www.wwegeo.com


- The Matronics RotaxEngines-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RotaxEngines-List



Hugh.vcf
 Description:

Download
 Filename:  Hugh.vcf
 Filesize:  79 Bytes
 Downloaded:  18 Time(s)

Back to top
View user's profile Send private message
Roger Lee



Joined: 10 Jan 2006
Posts: 1439
Location: Tucson, Az.

PostPosted: Thu Jul 20, 2017 5:08 am    Post subject: Re: Venting (Purging) of the Rotax 912 engine per SI-04-1997 Reply with quote

Hi Hugh,
You don't need to disconnect the battery. Just make sure the key or ignition switches are off. Disconnection of the battery is. CYA issue with Rotax. When I purge an engine I usually see 50-55 psi on the gauge with just St the power on.


- The Matronics RotaxEngines-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RotaxEngines-List

_________________
Roger Lee
Tucson, Az.
Rotax Instructor & Rotax IRC
Light Sport Repairman
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Back to top
View user's profile Send private message Send e-mail
hgmckay



Joined: 23 May 2006
Posts: 366

PostPosted: Thu Jul 20, 2017 5:59 am    Post subject: Re: Venting (Purging) of the Rotax 912 engine per SI-04-1997 Reply with quote

Roger, Thanks, but am I correct in stating that if there is no battery connected to the electrical system there will be no pressure indication on the gauge when hand rotating the engine? Hugh

- The Matronics RotaxEngines-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RotaxEngines-List
Back to top
View user's profile Send private message
Roger Lee



Joined: 10 Jan 2006
Posts: 1439
Location: Tucson, Az.

PostPosted: Thu Jul 20, 2017 2:47 pm    Post subject: Re: Venting (Purging) of the Rotax 912 engine per SI-04-1997 Reply with quote

For electronic senders you are correct.

- The Matronics RotaxEngines-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RotaxEngines-List

_________________
Roger Lee
Tucson, Az.
Rotax Instructor & Rotax IRC
Light Sport Repairman
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Back to top
View user's profile Send private message Send e-mail
hgmckay



Joined: 23 May 2006
Posts: 366

PostPosted: Thu Jul 20, 2017 8:15 pm    Post subject: Re: Venting (Purging) of the Rotax 912 engine per SI-04-1997 Reply with quote

My Rotax 912 UL. has the standard oil pressure sensor wired to a VDO steam gauge. Don't I need the battery connected for the gauge to indicate oil pressure when purging the system? If not please explain why.

- The Matronics RotaxEngines-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RotaxEngines-List
Back to top
View user's profile Send private message
Roger Lee



Joined: 10 Jan 2006
Posts: 1439
Location: Tucson, Az.

PostPosted: Sat Jul 22, 2017 6:05 am    Post subject: Re: Venting (Purging) of the Rotax 912 engine per SI-04-1997 Reply with quote

Hi Hugh,
Yes


- The Matronics RotaxEngines-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RotaxEngines-List

_________________
Roger Lee
Tucson, Az.
Rotax Instructor & Rotax IRC
Light Sport Repairman
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Back to top
View user's profile Send private message Send e-mail
Display posts from previous:   
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> RotaxEngines-List All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group