February 9, 2019 at 1:41 pm #166450
well my “nice” $60 5.5hp Evinrude Jubilee was dripping a drop a day and not from any seals bolts etc…
upon a real down on my knees close examination….. I found a couple of airline cracks in the lower half of the gearcase weeping that drop of oil every day !
Major deception… 🙁
Are these gearcase halves matched or would a simple replacement lower half cure the drips or.. .am I limited to changing the whole gear case body 🙁
Any chance that a good clean up of the lower half followed by some inside coating of JB weld be capable of sealing these airline cracks ?? what about crazy glue to infiltrate the cracks.
these very thin cracks .. half a air but a fingernail can feel them so structurally I don’t think the thing would fall apart
- This topic was modified 2 months, 1 week ago by crosbyman.
US Member - 1 Year
Topics: 3February 9, 2019 at 3:31 pm #166460
Very likely freeze damage at some point. Another lower gearcase half should fix it. some will say that they should not me miss-matched but I and others have done so with good results.
J_B weld or other products may not work well due to not being able to get the oil residue out of the crack.
Topics: 29February 10, 2019 at 2:27 am #166500
Aluminum tends to clog up the cutter/file when “V”ing out the crack’ but I have sealed some gear case cracks with the aluminum (zink??) brazing rod. Those split cases are machined as a unit and the factory frowned on swaping skegs. From what I have heard you have about a 20% chance of it leaking. . .
February 10, 2019 at 8:55 am #166516
- This reply was modified 2 months, 1 week ago by garry-in-tampa.
soldering may be my best …first option (waiting for wtb offers and tims ouboard for a quote)
I have a friend who runs welding shop… I will consult with him on the possibility of having one of his “aluminium” specialist look at it.
this is a bummer after having chased a carbon seal new carbom a seal plate doing electricals and carb clean up 🙁
p.s. btw…. freebies accepted 🙂February 10, 2019 at 11:55 am #166526
took out the lower gearcase half… gears in real nice condition
found small airline crack along the side of leading edge of the skeg . Crack can be seen also on the inside surface also … possibly an impact caused it ? upon closer lokk no other cracks found 🙂
anyhow i’ll inquire on possible welding or stuff the inside of the leading edge with JB weld since the crack is way down where left and right surfaces meet and JB would not mechanically obstruct anything…
will update when fixed ….
Canada Member - 2 Years
Topics: 77February 10, 2019 at 10:44 pm #166608
I have fixed them with JB weld, some from inside, some from outside. I clean out the crack and cut a groove with a die grinder and then fill it. On the motors that I like best, I have had them welded. Yes, a purist welder will tell you that the aluminum is saturated with oil, but it only needs to bond well enough to fill. No real strength required.February 11, 2019 at 8:38 am #166616
I added some 3 in 1 oil in the lower half gearcase to confirm the leaky crack before proceeding and yet….. no drips ????
maybe it is not leaking because no enough oil is bearing down in the crack ??? weird
in any event I’ll keep at it for a few days and may reseal the gearcase with JB weld
I have a prop shaft seal arriving soon and will close it all up and pressure test with air and soapy water
I may as well go all out and do the shift rod seal and driveshaft….few more days to go before ice out 🙂February 24, 2019 at 6:54 pm #169634
replaced the 303345 prop shaft seal installed .103 nitrile spaghetti , some JB steel weld inside the lower half and sealed up the gc with Permatex sealant …..no more drip drip drip 🙂
took a chance on the shift rod and drive shaft seals … if they leak i’ll find out soon enough next May and fix it
cowl to be repainted and “basic” Evinrude stencil to be added…. the real stencil for a jubile was more expensive than the motor 🙁
kept the pressure tank and innards. If any issues come up i’ll pop in a B&S round pump
Topics: 29February 25, 2019 at 9:57 am #169677
gold paint will do nicely….it will be sold anyway 🙁 snif…
US Member - 2 Years
Topics: 28February 25, 2019 at 10:59 pm #169711
i know there are some that say you have to keep the parts together, but see no reason if you replace the gaskets that it would be a problem.
how is it motors multiply when the garage lights get
- This reply was modified 1 month, 3 weeks ago by ddwilson.
US Member - 2 Years
Topics: 37April 3, 2019 at 3:43 pm #172550
The gearcase halves were bolted together at the factory and line bored as an assembly. It is for that reason that they are indeed a matched set and it is not recommended to swap them. That said, their tolerances must have been held quite closely during the time they were making those 2-piece cases (which was a long time). I have bought several motors that had them swapped and have also swapped them myself, I had one that was difficult to seal up but still sealed. The others all sealed without issue and never exhibited any extra effort in turning the prop shaft due to bearing misalignment. I have swapped skegs from late 60s motors on to mid-50s midsections without any problem at all. I know it is not recommended, but I will take my chances on this one every time. I usually use Permatex Ultra Black geasket sealer on the gearcase halves. It works great for this application and is much more forgiving than the 3M 847 sealer for this purpose.
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