Today's Message Index:
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1. 04:19 PM - 912 Gearbox Sealant Loctite 5910 and 574 (Hugh McKay)
2. 06:34 PM - Re: 912 Gearbox Sealant Loctite 5910 and 574 ()
3. 06:50 PM - Re: 912 Gearbox Sealant Loctite 5910 and 574 ()
Message 1
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| Subject: | 912 Gearbox Sealant Loctite 5910 and 574 |
I need to seal the mating surfaces of the gearbox on my Rotax 912 UL
upon reassembly after a 700 hour disassemble and inspection. I am having
a real difficulty in finding the Rotax recommended Loctite 5910 in small
quantities for this. When I can find it, it is in tubes costing $50 (US)
per tube. I only need a very small quantity. Upon researching the
product I find it is an Oximine Silicone, thixotropic, oil resistant,
RTV paste. I can find Permatex Ultra Black at my local auto store which
is basically the same (an Oximine Silicone, thixotropic, oil resistant,
RTV paste). The cured properties of both appear to be the same.
Why must a Loctite product be used? Are there other equal products that
can be used? What are other mechanics using for this? Gearbox is back
and ready to be reinstalled.
Hugh G. McKay III, P.E.
Allegro 2000
Rotax 912 UL
700 hours
N661WW
Ph. 704-661-8271
email hgmckay@bellsouth.net
Message 2
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| Subject: | Re: 912 Gearbox Sealant Loctite 5910 and 574 |
My last 912ULS has had a leaky gearbox seal since shortly after I bought it. Tried
Loctite 5910, when Rotax changed to this sealant, but it still leaked a little.
Finally, found Permatex "The Right Stuff". It works. Cleaned the mating
surfaces with MEK. Made sure no oil was leaking from engine to contaminate
the sealing surfaces.
I also used The Right Stuff to seal the intake and exhaust push rod covers where
they entered the No. 1 cylinder head. Got the idea from someone who had a leaky
cover and did the same thing. Cleaned the joints with brake cleaner. Thoroughly
dried. Applied The Right Stuff in the joints, rubbed it in with my finger.
Let it dry for 24 hours. Hasn't leaked since, push rod covers or gear
box.
I am currently finishing up a 3 week flight from Alabama to Monument Valley, UT,
and up to friends in the SE corner of Oregon. Currently in El Dorado,KS. Another
two days to fly back to my home in Titus, AL. I have flown about 60.0
hours this trip and the engine is oil free. Sure is a good feeling to land, check
the engine, and not see oil seepage.
You all may be interested to know I flew direct from Morgan, UT to Rock Springs,
WY, to Fort Collins/Loveland Airport, CO. This is my 22d transcontinental flight
since 2003 in this airplane. First time I have been able to fly direct
over the Rockies in this area. The weather was perfect. Had some turbulence,
but bad. Climbed and cruised 15,000 feet MSL to clear the mountains. The 912ULS
did good.
john h
Kolb MKIII
El Dorado, KS
---- Hugh McKay <hgmckay@bellsouth.net> wrote:
> I need to seal the mating surfaces of the gearbox on my Rotax 912 UL upon reassembly
after a 700 hour disassemble and inspection. I am having a real difficulty
in finding the Rotax recommended Loctite 5910 in small quantities for this.
When I can find it, it is in tubes costing $50 (US) per tube. I only need a
very small quantity. Upon researching the product I find it is an Oximine Silicone,
thixotropic, oil resistant, RTV paste. I can find Permatex Ultra Black
at my local auto store which is basically the same (an Oximine Silicone, thixotropic,
oil resistant, RTV paste). The cured properties of both appear to be the
same.
>
> Why must a Loctite product be used? Are there other equal products that can be
used? What are other mechanics using for this? Gearbox is back and ready to
be reinstalled.
>
> Hugh G. McKay III, P.E.
> Allegro 2000
> Rotax 912 UL
> 700 hours
> N661WW
> Ph. 704-661-8271
> email hgmckay@bellsouth.net
Message 3
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| Subject: | Re: 912 Gearbox Sealant Loctite 5910 and 574 |
Sorry for the omission. I flew 6.0 hours today in Kansas wind, right on the nose.
I am worn out. I am three days out of SE Oregon. The turbulence over the
Rockies was not bad. Weather at Rock Springs, WY, was perfect. Never seen anything
but wind, rain, and cold at Rock Springs. Had a good idea I could make
it over the mountains direct.
john h
> You all may be interested to know I flew direct from Morgan, UT to Rock Springs,
WY, to Fort Collins/Loveland Airport, CO. This is my 22d transcontinental
flight since 2003 in this airplane. First time I have been able to fly direct
over the Rockies in this area. The weather was perfect. Had some turbulence,
but "NOT" bad. Climbed and cruised 15,000 feet MSL to clear the mountains.
The 912ULS did good.
>
> john h
> Kolb MKIII
> El Dorado, KS
>
>
>
> ---- Hugh McKay <hgmckay@bellsouth.net> wrote:
> > I need to seal the mating surfaces of the gearbox on my Rotax 912 UL upon reassembly
after a 700 hour disassemble and inspection. I am having a real difficulty
in finding the Rotax recommended Loctite 5910 in small quantities for this.
When I can find it, it is in tubes costing $50 (US) per tube. I only need
a very small quantity. Upon researching the product I find it is an Oximine Silicone,
thixotropic, oil resistant, RTV paste. I can find Permatex Ultra Black
at my local auto store which is basically the same (an Oximine Silicone, thixotropic,
oil resistant, RTV paste). The cured properties of both appear to be
the same.
> >
> > Why must a Loctite product be used? Are there other equal products that can
be used? What are other mechanics using for this? Gearbox is back and ready to
be reinstalled.
> >
> > Hugh G. McKay III, P.E.
> > Allegro 2000
> > Rotax 912 UL
> > 700 hours
> > N661WW
> > Ph. 704-661-8271
> > email hgmckay@bellsouth.net
>
>
>
>
>
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