Flywheel bolts 1850, Can I used Loctitie?

[random_farmhick]

yep. forget the loctite, unless it's called for in the SM.
the safety wire tip is worth more than 2c; i use that a lot for hi-vibration apps & bolts/plugs w fluid behind them.

Well considering that at least according to loctites website, it wasn't available until 1968, it wouldn't have been called for in a service manual until at least then. Before that, things that needed "locked", used either plates/tabs or safety wires. It was also a "new" thing back then, so companies many times probably wouldn't have used it until at least several years to make sure it was proven first. Liquid thread lock is a very good product for things such as flywheel bolts. I work on a lot of deere equipment, and many of the flywheel bolts sub to a bolt with pre applied thread lock on them, for applications up to 300+hp. If it works for them, there is no reason it wouldn't work on a 100hp engine as long as the threads are properly prepped.

 

[hurleyjd]

What about lock washers

 

[random_farmhick]

What about lock washers

Lock washers, while I do use them in some places, are not good for something like this. IF you were to use them, do not use a split lock washer, but something like a star or serrated lock washer. Split lock washers have a tendency to crack and come out in high vibration areas.

 

[Kell]

Well considering that at least according to loctites website, it wasn't available until 1968, it wouldn't have been called for in a service manual until at least then. Before that, things that needed "locked", used either plates/tabs or safety wires. It was also a "new" thing back then, so companies many times probably wouldn't have used it until at least several years to make sure it was proven first. Liquid thread lock is a very good product for things such as flywheel bolts. I work on a lot of deere equipment, and many of the flywheel bolts sub to a bolt with pre applied thread lock on them, for applications up to 300+hp. If it works for them, there is no reason it wouldn't work on a 100hp engine as long as the threads are properly prepped.

"... a thing worked for somebody, so it will work for you."
i highly dislike that justification.

the big probs i see with loctite are: 1. no visual confirmation, 2. it's a chemical solution that separates with age and improper storage, 3. very tight liability and extremely difficult to prove the product failed; i.e. it's your fault for using it.

 

[random_farmhick]

"... a thing worked for somebody, so it will work for you."
i highly dislike that justification.

the big probs i see with loctite are: 1. no visual confirmation, 2. it's a chemical solution that separates with age and improper storage, 3. very tight liability and extremely difficult to prove the product failed; i.e. it's your fault for using it.

We can agree to disagree, and I can't argue with some of your justifications against using loctite, although I feel that there are more pros than cons. I can also dislike your justification for just using lock tabs/plates or safety wires. You say that they don't call for loctite in the service manual, well modern lubricants are superior to what was available in the 50's and 60's, but they don't call for it, so maybe we should push to get lubricants that were available then, because that's what the books called for...

 

[Kell]

We can agree to disagree, and I can't argue with some of your justifications against using loctite, although I feel that there are more pros than cons. I can also dislike your justification for just using lock tabs/plates or safety wires. You say that they don't call for loctite in the service manual, well modern lubricants are superior to what was available in the 50's and 60's, but they don't call for it, so maybe we should push to get lubricants that were available then, because that's what the books called for...

i did not state my justification for using safety wire, and you did not ask. how can you dislike something you don't know? lol

my prior remark on SM was *in general,* not specific to the tractor in topic. the reason i have exceptions for that circumstance is it is easier to establish fault of the manufacturer if chemical thread lock fails in prescribed application. (and in some cases that involve significant risk of bodily harm on failure, i will still use safety wire over SM spec that does not include it.)