Today's Message Index:
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1. 08:05 AM - Re: 912 oil purge proceedure (Roger Lee)
2. 06:20 PM - "Burping" The Oil System in the 912 Engine (Hugh McKay)
3. 07:45 PM - Re: "Burping" The Oil System in the 912 Engine (Richard Girard)
Message 1
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| Subject: | Re: 912 oil purge proceedure |
Make your changes now. They are not heavier parts or strain on the system. They
are just better designed parts that make the system run at more consistent pressures.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=298587#298587
Message 2
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| Subject: | "Burping" The Oil System in the 912 Engine |
Am I correct in my understanding that the only reason Rotax states on
page 10-15 of the Operators Manual to rotate the prop several times in
the direction of engine rotation until one hears the "burp" or "murmur"
in the oil tank is to return oil to the tank to check for the proper
level in the tank? Some have inferred that you must do this every time
before starting the engine to assure proper lubrication through out the
engine. My interpretation of the Rotax instructions on page 10-15 of
their Operation Manual is that this is to assure that you have the
correct oil level in the tank, and for no other reason.
Hugh McKay
Allegro 2000
Rotax 912 UL
Message 3
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| Subject: | Re: "Burping" The Oil System in the 912 Engine |
The 912 REQUIRES crankcase pressure to push oil back to the tank. It's a dry
sump system with no scavenge pump to empty out the crankcase. When you
listen for the burp you're verifying that the engine is sealed so that there
are no leaks to keep this from working.
Rick Girard
On Sun, May 23, 2010 at 8:15 PM, Hugh McKay <hgmckay@bellsouth.net> wrote:
> Am I correct in my understanding that the *only* reason Rotax states on
> page 10-15 of the Operators Manual to rotate the prop several times in the
> direction of engine rotation until one hears the "burp" or "murmur" in the
> oil tank is to return oil to the tank to check for the proper level in the
> tank? Some have inferred that you must do this every time before starting
> the engine to assure proper lubrication through out the engine. My
> interpretation of the Rotax instructions on page 10-15 of their Operation
> Manual is that this is to assure that you have the correct oil level in the
> tank, and for no other reason.
>
> Hugh McKay
> Allegro 2000
> Rotax 912 UL
>
> *
>
> *
>
>
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