captain dangers
partner 1633B (skil) chainsaw
try Loctite on the threads buddy ;o)
stihl 039 rebuild
- Thread starter chris ham
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Loctite the threads by all means, but that want stop the leaking at the heads of the screws. Dirko makes a mess but it is fool proof
The red kind that I get from Stihl I will get a part # tomorrow at work
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Tube of sealant Dirko HT Red
Tube of sealant Dirko HT Red
captain dangers
partner 1633B (skil) chainsaw
could you use copper washers/hydraulic washers on the bolts to seal them? what does stihl use? CD
captain dangers
partner 1633B (skil) chainsaw
when you seal it, don't turn the engine over or pressure test until after 2-3 days, giving the sealant a little more time to cure. and see if that makes a difference ? CD you could also try putting some under your screw caps when tightening down to ensure a seal ? CD
The Dirko will seal it
Did you fit and torque the clamshell immediately after applying the sealant or let them get good and tacky before fitting them together. This is one task I take my time with. I'll snug it up but let it sit a little longer before I torque it down.
I’ve put dozens of saws together with a permatex product called the Right Stuff, no waiting for set up time, always works.
captain dangers
partner 1633B (skil) chainsaw
well he is obviously having problems with it setting for one reason or another? otherwise it wouldn't bubble under pressure, even after 24 hours . CDI’ve put dozens of saws together with a permatex product called the Right Stuff, no waiting for set up time, always works.
The Right Stuff works for me, your mileage may vary.
fearofpavement
Trying them all
I've had issues with leaks around the bolts on this series. I now spread some Motoseal around the bolts when I install them. Also, in almost every case, I assemble these engines outside the saw, let them sit overnight and pressure test before installation.
The directions on the motoseal state/let dry one minute and then assemble/how do you assemble outside the saw.The bolts that hold the belly pan and cylinder together come up through the bottom of the saw housing.The motoseal is quite runny when you apply it.Messy in fact.
fearofpavement
Trying them all
Assemble the engine with it out of the case. Use bushings/spacers on the bolts or use shorter bolts. Let sit overnight. After pressure testing, carefully remove the bolts and fit the engine inside the engine housing. Then put sealant around the bolts and insert them from the outside. snug these down a bit before installing the bar stud so as not to loosen the pan in the process. Once the stud is in position, torque the 4 engine bolts and then tighten down the stud.
The Motoseal shouldn't be runny. Mine is always about like toothpaste consistency. It shouldn't really flow to any extent.
fearofpavement
Trying them all
Also, make sure you don't get sealant in the impulse nipple. It's easy to do and you'll have a saw that won't run if it happens. I must have read that in a book somewhere....
