Today's Message Index:
----------------------
1. 06:31 AM - Re: Purging 912ULS oil system with oil thermostat installed (lucien)
2. 07:21 AM - Re: Purging 912ULS oil system with oil thermostat installed (Roger Lee)
3. 07:40 AM - service bulletins (Joe and Joan Kimbell)
4. 07:41 AM - Re: Purging 912ULS oil system with oil thermostat installed (lucien)
5. 07:52 AM - Re: service bulletins (Bob Comperini)
6. 08:26 AM - Re: Re: Purging 912ULS oil system with oil thermostat installed (Dave Austin)
7. 09:39 AM - Re: Purging 912ULS oil system with oil thermostat installed (lucien)
8. 10:20 AM - Re: Purging 912ULS oil system with oil thermostat installed (Roger Lee)
9. 10:56 AM - Re: Re: Purging 912ULS oil system with oil thermostat installed (David Weaver)
10. 04:01 PM - Re: Purging 912ULS oil system with oil thermostat installed (lucien)
11. 04:21 PM - Re: Re: Purging 912ULS oil system with oil thermostat installed (Paul Kuntz)
12. 07:52 PM - Re: Purging 912ULS oil system with oil thermostat installed (Roger Lee)
Message 1
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| Subject: | Re: Purging 912ULS oil system with oil thermostat installed |
Roger Lee wrote:
> Yes you need to do a purge if you break the lines or repalce them. It really
isn't hard.
> You can use a heat gun on the thermostat to open it up for a good purge and as
suggested look at the video on the ROAN website. It is very good in showing
you what to do.
Ok, thanks gents for the info. I'm assuming pulling the valve covers to check the
lifters for priming should also be treated as "mandatory"? I'm more paranoid
about that than just doing the purge ;). I.e. the expensive gaskets and of course
they'll probably still leak after pulling them off and putting back on...
;)
Thanks,
LS
--------
LS
Titan II SS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=334061#334061
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| Subject: | Re: Purging 912ULS oil system with oil thermostat installed |
Hi Lucien,
You should check the lifters because you may inject a very large air bubble from
the drained hose and inject too much air. I have been know at times to pre-fill
oil hoses after I get one end connected and just before hooking up the other.
Checking the lifters is fairly easy. Technically Rotax likes new "O" rings
when you pull the old ones, but you will most likely be good to go using the
old ones. The worst that can happen with an old valve cover "O" is a slight
ooze if it leaks, then you could replace it. Torque the valve covers to 105 in/lbs.,
90 in/lbs is the old value. Don't forget to put a .002 feeler gauge between
the valve covers for spacing so they don't touch each other as you torque
them down..
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=334068#334068
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| Subject: | service bulletins |
In the process of doing the annual conditional inspection on my ch701 and w
as unable to connect to www.rotax-aircraft-engins.com
Could someone tell me how to get the service bulletins. I thought (from thi
s site) that I would not have to pay to get this info=2C but will do it if
I need to. thanks=2C Joe Kimbell
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| Subject: | Re: Purging 912ULS oil system with oil thermostat installed |
Roger Lee wrote:
> Hi Lucien,
>
> You should check the lifters because you may inject a very large air bubble from
the drained hose and inject too much air. I have been know at times to pre-fill
oil hoses after I get one end connected and just before hooking up the other.
Checking the lifters is fairly easy. Technically Rotax likes new "O" rings
when you pull the old ones, but you will most likely be good to go using
the old ones. The worst that can happen with an old valve cover "O" is a slight
ooze if it leaks, then you could replace it. Torque the valve covers to 105
in/lbs., 90 in/lbs is the old value. Don't forget to put a .002 feeler gauge between
the valve covers for spacing so they don't touch each other as you torque
them down..
Ok, thanks Roger. If Roger says it, well it's going to be done on my motor, so
there we have it ;).
Cut, pasted and saved and I'm ordering gaskets today. That way I'll have new ones
in case I do any damage pulling the covers off....
Thanks gents,
LS
--------
LS
Titan II SS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=334069#334069
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| Subject: | Re: service bulletins |
On 07:21 AM 3/16/2011, Joe and Joan Kimbell wrote:
>In the process of doing the annual conditional inspection on my ch701 and was unable to connect to <http://www.rotax-aircraft-engins.com>www.rotax-aircraft-engins.com
That site name is mis-spelled in your post. Here's a few that will work:
http://www.rotax-aircraft-engines.com
http://www.rotax-owner.com
--
Bob Comperini
e-mail: bob@fly-ul.com
WWW: http://www.fly-ul.com
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| Subject: | Re: Purging 912ULS oil system with oil thermostat |
installed
Why would you not do an oil and filter change, run the engine for 10 minutes and
then repeat the
changes?
Much less likely to have problems.
Dave Austin 601HDS 912UL
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| Subject: | Re: Purging 912ULS oil system with oil thermostat installed |
paul.r.kuntz(at)gmail.com wrote:
> LS,
>
> I discuss this on my Pipistrel project web site. Here's a link to the Firewall Forward page (http://www.pipistrelbuilders.com/firewall_forward.html). Scroll down the page to the entries for
> Dec 5, 2010, Dec 18th, 2010 and Jan 2nd, 2011. I found that the partially open
position of the thermostat when cold wasn't enough to get all the lines full
of oil, and you definitely want to get all the air out of them.
>
> I would check the lifters as well, although they may remain full of oil. The problem is that you will be turning the prop through a number of revolutions before the system is full of oil again, so the oil may be squeezed out of the lifters, at least to some degree. Follow the procedure described in the Rotax 912 Installation Manual, section 31.11 (available in the Documentation area (http://www.rotax-aircraft-engines.com/desktopdefault.aspx/tabid-49) of the Rotax web site). It will be easy to see of the lifters need to be re-primed. There is also a video of the priming procedure available on the Rotax Owners site (http://joomla.rotax-owner.com/). If you don't already have a subscription to this site, I recommend it for an excellent information resource (in addition to this forum).
>
> Regards,
> Paul Kuntz
> Pipistrel Sinus 912 kit serial 196 (http://www.pipistrelbuilders.com/)
>
Ok, thanks Paul. This sounds like practically a 4-man job! 1 with a heat gun on
the oil tank, 1 with a heat gun on the thermostat, 1 pressurizing the tank and
1 cranking the prop!
However, I have this idea that may reduce it to only 2. Perhaps heating the tank
only with a heat gun first till it's up to about 200. then doing the cranking,
checking for warmth in the hoses going to the oil filter during the priming
operation. Hopefully indicating oil is getting in there...
pre-filling the lines like Roger talks about sounds like it would help too. What
you guys think?
LS
--------
LS
Titan II SS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=334090#334090
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| Subject: | Re: Purging 912ULS oil system with oil thermostat installed |
Hi Lucien,
It is really a one man job. :D
I usually only pre-fill a hose if I'm only going to do just one hose. It may be
a little cumbersome to do that with all the hoses. You know pre-heating the oil
to 200F sounds doable. It would open the thermostat at 180F, interesting idea.
Just a normal purge should be just fine with the thermostat open. The tank's
pressure can be continuous and its pressure set by a regulator. It will leak
air because it is not air tight and that's okay because the regulator will
keep the pressure constant. Just pour your (hot or normal temp) oil in, set the
pressure and rotate the prop. 1 guy.
If he is changing all the lines then he has done an oil change provided you drain
the tank. A new filter is good, but not necessary to change it after a few
minutes. You shouldn't damage a valve cover "O" ring unless you cut it with something.
Just pulling it off shouldn't be an issue. Some covers are kind of glued
on after a long time of never being removed. Don't shove knife blades down
in between, it make gouge out the sealing surface. Just use a rubber mallet and
tap it gently.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=334096#334096
Message 9
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| Subject: | Re: Purging 912ULS oil system with oil thermostat |
installed
A few years back a tech at Lockwood told me that older 912-UL engines do no
t require any purging of the oil system and it only applies to newer engine
s incorporating a valve lifter design change.- I would advise checking wi
th a Rotax repair station for the engine serial number and date the change
was made.- I did not log the info I was given at the time...my engine was
not affected by the change.--
Dave Weaver N912GR-
--- On Wed, 3/16/11, Roger Lee <ssadiver1@yahoo.com> wrote:
From: Roger Lee <ssadiver1@yahoo.com>
Subject: RotaxEngines-List: Re: Purging 912ULS oil system with oil thermost
at installed
Hi Lucien,
It is really a one man job.- :D
I usually only pre-fill a hose if I'm only going to do just one hose. It ma
y be a little cumbersome to do that with all the hoses. You know pre-heatin
g the oil to 200F sounds doable. It would open the thermostat at 180F, inte
resting idea.- Just a normal purge should be just fine with the thermosta
t open. The tank's pressure can be continuous and its pressure set by a reg
ulator. It will leak air because it is not air tight and that's okay becaus
e the regulator will keep the pressure constant. Just pour your (hot or nor
mal temp) oil in, set the pressure and rotate the prop. 1 guy.
If he is changing all the lines then he has done an oil change provided you
drain the tank. A new filter is good, but not necessary to change it after
a few minutes. You shouldn't damage a valve cover "O" ring unless you cut
it with something. Just pulling it off shouldn't be an issue. Some covers a
re kind of glued on after a long time of never being removed. Don't shove k
nife blades down in between, it make gouge out the sealing surface. Just us
e a rubber mallet and tap it gently.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
Home 520-574-1080- TRY HOME FIRST
Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=334096#334096
le, List Admin.
Message 10
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| Subject: | Re: Purging 912ULS oil system with oil thermostat installed |
Roger Lee wrote:
> Hi Lucien,
>
> It is really a one man job. :D
> I usually only pre-fill a hose if I'm only going to do just one hose. It may
be a little cumbersome to do that with all the hoses. You know pre-heating the
oil to 200F sounds doable. It would open the thermostat at 180F, interesting
idea. Just a normal purge should be just fine with the thermostat open. The tank's
pressure can be continuous and its pressure set by a regulator. It will
leak air because it is not air tight and that's okay because the regulator will
keep the pressure constant. Just pour your (hot or normal temp) oil in, set
the pressure and rotate the prop. 1 guy.
> If he is changing all the lines then he has done an oil change provided you drain
the tank. A new filter is good, but not necessary to change it after a few
minutes. You shouldn't damage a valve cover "O" ring unless you cut it with
something. Just pulling it off shouldn't be an issue. Some covers are kind of
glued on after a long time of never being removed. Don't shove knife blades down
in between, it make gouge out the sealing surface. Just use a rubber mallet
and tap it gently.
Hi Roger,
Ok, thanks for the info and encouragement. I'll probably also try the pre-filling
of the lines idea in the oil cooler and lines on the other side of the thermostat.
Probably all of them, but particularly those.
I ordered new valve cover gasket sets so I generally wont have to worry much about
accidentally ruining the old ones. I'll reuse them for the first engine run
(if it leaks for that who cares) and then simply put the new ones in when I
button it up after the final check of the lifters.
Any recommendations on a low pressure regulator? My air compressor has a regulator
on it too but it's very inaccurate at pressures like 15 PSI. Is it something
I can add in line or ?
Thanks,
LS
--------
LS
Titan II SS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=334127#334127
Message 11
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| Subject: | Re: Purging 912ULS oil system with oil thermostat |
installed
I was able to get by with two people, but it was a bit of a challenge.
Filling the lines first will certainly help, if your installation allows.
I
couldn't figure out a way to do this on mine without making a complete mess
of things.
Regards,
Paul
On Wed, Mar 16, 2011 at 9:36 AM, lucien <lstavenhagen@hotmail.com> wrote:
> lstavenhagen@hotmail.com>
>
>
> paul.r.kuntz(at)gmail.com wrote:
> > LS,
> >
> > I discuss this on my Pipistrel project web site.=EF=BD Here's a link
to the
> Firewall Forward page (
> http://www.pipistrelbuilders.com/firewall_forward.html).=EF=BD Scroll
down the
> page to the entries for
> > Dec 5, 2010, Dec 18th, 2010 and Jan 2nd, 2011.=EF=BD I found that t
he
> partially open position of the thermostat when cold wasn't enough to get
all
> the lines full of oil, and you definitely want to get all the air out of
> them.=EF=BD
> >
> > I would check the lifters as well, although they may remain full of oil
.=EF=BD
> The problem is that you will be turning the prop through a number of
> revolutions before the system is full of oil again, so the oil may be
> squeezed out of the lifters, at least to some degree.=EF=BD Follow the
procedure
> described in the Rotax 912 Installation Manual, section 31.11 (available
in
> the Documentation area (
> http://www.rotax-aircraft-engines.com/desktopdefault.aspx/tabid-49) of th
e
> Rotax web site).=EF=BD It will be easy to see of the lifters need to b
e
> re-primed.=EF=BD There is also a video of the priming procedure availa
ble on the
> Rotax Owners site (http://joomla.rotax-owner.com/).=EF=BD If you don't
already
> have a subscription to this site, I recommend it for an excellent
> information resource (in addition to this forum).
> >
> > Regards,
> > Paul Kuntz
> > Pipistrel Sinus 912 kit serial 196 (http://www.pipistrelbuilders.com/)
> >
>
>
> Ok, thanks Paul. This sounds like practically a 4-man job! 1 with a heat
> gun on the oil tank, 1 with a heat gun on the thermostat, 1 pressurizing
the
> tank and 1 cranking the prop!
>
> However, I have this idea that may reduce it to only 2. Perhaps heating t
he
> tank only with a heat gun first till it's up to about 200. then doing the
> cranking, checking for warmth in the hoses going to the oil filter during
> the priming operation. Hopefully indicating oil is getting in there...
>
> pre-filling the lines like Roger talks about sounds like it would help to
o.
> What you guys think?
>
> LS
>
> --------
> LS
> Titan II SS
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=334090#334090
>
>
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>
>
Message 12
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| Subject: | Re: Purging 912ULS oil system with oil thermostat installed |
Hi Lucien,
CPS has a nice little oil purge regulator kit. You could put it at the end of your
airline without any problem and regulate the air pressure right at your plane.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=334142#334142
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