pcarillonsr(at)neo.rr.com
Guest
|
 Posted: Fri Oct 29, 2010 6:09 am Post subject: 503 pressure test question. |
 |
|
From: Bob [mailto:rcarillon(at)neo.rr.com (rcarillon(at)neo.rr.com)]
Sent: Wednesday, October 27, 2010 11:00 PM
To: 'info(at)leadingedgeairfoils.com (info(at)leadingedgeairfoils.com)'
Subject: 503 pressure test question.
Hi my name is Bob.
I was hoping someone could answer a question on pressure testing the crank case on a 503 DCDI Rotax to check for seal leaks.
My question is, is there a seal in the middle of the crank to completely seal the front half of the engine from the rear half? By looking
In the parts manual there does not appear to be that type of a seal too completely seal a cross feed in the crank case.
I am asking this question because we made four ¼ in block off plates for both intake and exhaust ports. So I blocked off all four
ports and put the gauge and pressure in the mag side intake port to 7 psi. The pressure did not hold. So then I started checking
with soapy water to see if my plates were sealed. I used old gaskets and the plates were leaking. The thing I noticed was the PTO
block off plates were leaking air even though I was pressure testing the mag end of the crankcase. I have been told by one guy that
the center crank shaft seals are leaking. Is this true or are they suppose to cross feed to lubricate the center crank shaft bearings?
When I put new gaskets on all four block off plates the engine held 7 psi and 16 inches of vacuum for 10 min and only changed readings
of maybe a half needle width. So no case or mag/pto seal leaks. I am thinking I have been given inaccurate info on this test for a 503 but
maybe correct for a water cooled 582. Thankyou in advance for any help and if you cannot answer my question then would you be able
to give me a contact of someone who might.
Thanks again,
Bob
[quote][b]
| | - 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 |
|
|
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
