Loctite User Guide

I have noticed a few posts around facebook and the like asking what Loctites to use, luckily I work in a job where I can purchase what chemicals, sticky stuff and lubes I like, so have had the chance to use different products where I can.
I have experienced first hand that Loctite don't make a bad product. It's worth the little more expense to go for Loctite rather than some other rubbish. None of this stuff is expensive compared to dealing with leaks and the eventual cost of having to top everytihing up all the time.
So whats's best for where?

Bolts you dont't want to move ever! : loctite 270, this si the green coloured thread locker, good stuff but may require heating to remove any bolts after a while.

Bolts you might want to remove later: Loctite 243, blue in colour and excellent for holding bolts until you want to remove them.

Diesel fuel ines, Water (not drinking water) and Petrol Line sealing : Loctite 577. This stuff is a creamy sticky, sets in presence of fuel and I've used it on Injection lines to the injectors no problems.

Hydraulics, brakes: Loctite 569 for the threads (if you are using stainless on stainless fittings, this stuff is excellent to prevent galling) It is a red, very fluidic sealant but works very well and has helped me with a few leaks.It is formulated with no fillers.
Loctite 567 for the mating faces, the applicator has a narrow slot to allow you to put a thing bead around were the two 45degree mating faces meet. brillinat stuff if you have scoring in the mating faces.
Hydraulics normally require very clean oil with no contamination. these two have been formulated to allow it to cause no problems with any hydraulic systems so Ideal for PTOs and winches.

There is a full user guide found here: http://www.henkelna.com/us/content_data/316041_FINAL_LT4680_AAM_Do_It_Guide_v7.pdf
This does contain some really good tips on preperation when working and some more specialist items.

Hope this helps someone in the course of their repairs!

monkfish24 said:

I have noticed a few posts around facebook and the like asking what Loctites to use, luckily I work in a job where I can purchase what chemicals, sticky stuff and lubes I like, so have had the chance to use different products where I can.
I have experienced first hand that Loctite don't make a bad product. It's worth the little more expense to go for Loctite rather than some other rubbish.
So whats's best for where?
Diesel fuel ines, Water (not drinking water) and Petrol Line sealing : Loctite 577. This stuff is a creamy sticky, sets in presence of fuel and I've used it on Injection lines to the injectors no problems.
Hydraulics: Loctite 569 for the threads (if you are using stainless on stanless fittings, this stuff is excellent to prevent galling) It is a red, very fluidic sealant but works very well and has helped me with a few leaks

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I rarely use any, except where it is specified in a manual for re-assembly of a specific component.
As a passing thought, you shouldn't have to use any sealant on injector pipes, the end fitting should seal on its own, dry!

Turboman said:

I rarely use any, except where it is specified in a manual for re-assembly of a specific component.
As a passing thought, you shouldn't have to use any sealant on injector pipes, the end fitting should seal on its own, dry!

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It would in an ideal world but when the previous chimp of an engineer overtightened all the fuel lines and caused the seats to be damaged. The pipes being double walled, costing 6000EUR each, with a two week lead time and me needing 8 ofthem, Loctite was a good substitute

monkfish24 said:

It would in an ideal world but when the previous chimp of an engineer overtightened all the fuel lines and caused the seats to be damaged. The pipes being double walled, costing 6000EUR each, with a two week lead time and me needing 8 ofthem, Loctite was a good substitute

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8? Not on a landy then? Be very careful, you really don't want any getting into the fuel!

Turboman said:

8? Not on a landy then? Be very careful, you really don't want any getting into the fuel!

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No, for two of my generators on board Two John Deere units as it happens, M1064T2s. It has apparently been formulated for use in diesel systems and I can testify to at least 400 hours of running per generator and no problems. Obviously apply sparingly, not daubing the conection in the stuff.

Turboman said:

I rarely use any, except where it is specified in a manual for re-assembly of a specific component.
As a passing thought, you shouldn't have to use any sealant on injector pipes, the end fitting should seal on its own, dry!

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Yes, that and brake pipes. A bit like plumbing with compression joints - you're using the elasticity of the metal itself to create the seal.

Otherwise good to know. There's a very poor selection of Loctite products available at my local Halfords - last time I ran out I was reduced to using a thing like a blue lipstick. I like putting Loctite on things. A lot of Land Rover replacement bolts, if you buy the genuine article, have a dollop of what looks like dried paint on the threads, so they're pre treated with something to stop them coming undone.

monkfish24 said:

No, for two of my generators on board Two John Deere units as it happens, M1064T2s. It has apparently been formulated for use in diesel systems and I can testify to at least 400 hours of running per generator and no problems. Obviously apply sparingly, not daubing the conection in the stuff.

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Good!
Modern Deere engine is pretty different to the stuff that I work on. Lot of my friends have them , but they tend to trade them in long before any attention is required!

Brown said:

Yes, that and brake pipes. A bit like plumbing with compression joints - you're using the elasticity of the metal itself to create the seal.

Otherwise good to know. There's a very poor selection of Loctite products available at my local Halfords - last time I ran out I was reduced to using a thing like a blue lipstick. I like putting Loctite on things. A lot of Land Rover replacement bolts, if you buy the genuine article, have a dollop of what looks like dried paint on the threads, so they're pre treated with something to stop them coming undone.

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Wouldn't dream of putting it on brake pipes either!
I have seen the smear of blue stuff as well!
Being a true dinosaur, I still love my big box of lock washers, though!

Good informative post but I really don't use Loctite as I find the use of a spring washer or lock plate works extremely well NEVER use it on hydraulic brakes, really cant think of anywhere I would use it on my Landy just apply the correct torque! Maybe a slightly worn thread?? NO ID replace regards. Chris

I still replace like for like where I can but sometimes, having a tube of the stuff around could save you when you need saving most.

Turboman said:

Good!
Modern Deere engine is pretty different to the stuff that I work on. Lot of my friends have them , but they tend to trade them in long before any attention is required!

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I wouldn't go as far to say it's "modern". Injectors are mechanically operated, injection pump is mechanically timed and I have to adjust the valve clearances by hand! Still, it sits at 1500 RPM all it's life and don't let it get cold stacking, it has been really reliable.

two weeks till I am home! Would like to arrange a meet with you all for a drink and bring my landy for show and tell! I will PM you as well as I have a favour to ask!

I'm sure I remember a post on here showing some test results that showed spring washers as nearly useless in high vibration environments. Quite a shock, as I have used springies since my apprenticeship, but I now use locktite wherever I don't want bolts to work free. I've searched for the relent post without luck.

Or maybe I just dreamt it?

monkfish24 said:

I still replace like for like where I can but sometimes, having a tube of the stuff around could save you when you need saving most.



I wouldn't go as far to say it's "modern". Injectors are mechanically operated, injection pump is mechanically timed and I have to adjust the valve clearances by hand! Still, it sits at 1500 RPM all it's life and don't let it get cold stacking, it has been really reliable.

two weeks till I am home! Would like to arrange a meet with you all for a drink and bring my landy for show and tell! I will PM you as well as I have a favour to ask!

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Most diesels like regular use, or even better constant use, if it never cools down you get much less wear than lots of stop start operation!
Edit. Yes well up for pub meet! Off to Lunnon tomorrow, will be back next week. PM, I shall sort it if I can!

flatlander said:

I'm sure I remember a post on here showing some test results that showed spring washers as nearly useless in high vibration environments. Quite a shock, as I have used springies since my apprenticeship, but I now use locktite wherever I don't want bolts to work free. I've searched for the relent post without luck.

Or maybe I just dreamt it?

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Up to them what they think, would be a lot of factors with that, what do they consider high vibration, torques, temperatures lubrication etc. etc.
Been using them for over thirty years, not noticed anything coming loose, I think I shall continue to use them!

Turboman said:

Edit. Yes well up for pub meet! Off to Lunnon tomorrow, will be back next week. PM, I shall sort it if I can!

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Big big city that place, like Truro but bloody bigger I tell thee!Going for anything in particular? Me and the missus are off up there after the wedding to see some shows. She won't let me take the Landy

monkfish24 said:

Big big city that place, like Truro but bloody bigger I tell thee!Going for anything in particular? Me and the missus are off up there after the wedding to see some shows. She won't let me take the Landy

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Yes, the Oval test match, don't come much more special than that!
Not sure if yer landy would be allowed anyway, mine aint! Yours may be historic!

Weather's not looking too good but, if the rest of the series has been anything to go by, there's a good chance of a result.

G~

gencybay said:

Weather's not looking too good but, if the rest of the series has been anything to go by, there's a good chance of a result.

G~

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We are hoping the first day might lose some time to rain. We are driving up tomorrow, going to the game Fri, day off Sat, then back on Sunday. Last game didn't even make it to day three! Forecast has improved, threat of rain tomorrow receding!

Turboman said:

Yes, the Oval test match, don't come much more special than that!
Not sure if yer landy would be allowed anyway, mine aint! Yours may be historic!

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Seems my series is compliant with the "Low Emmisions" zone! what the **** is it there for if a 35 year old vehicle is compliant??? Oh wiat, we couldn't have Lord Felchbottom not being able to drive his E type into the Lords every morning!

Can't complain too much, might want to take it there one day!