thread locking compound

[oilythumb]

i would like to know when and were to use a thread locking compound when doing repair work on engines

Topic

[college man]

not very often

[JesseTech2000]

I use it on brakes and anything thats going to get a lot of vibration. When in doubt, use it. You wont hurt anything. Thread locker red and anti seize are some of my favorite things.

[dreamer2355]

It all depends on what fasteners you are using and what you are working on. Green or Blue is a good choice for some braking applications.

As for anti-seize, just remember all torque specs are dry specs. I really don’t use anti-seize at all and neither do most of the other techs at our shop.

Each to there own though C8-)

[oilythumb]

Thank u all.for your reply and advise

[Dad_The_Mechanic]

I have always followed a simple rule if the bolt was tight when you removed it and there wasn’t any on there you don’t need it. Manufacturers spend A LOT of effort to find out if they really need little things like this or not. They save a ton of money by not putting things like this in when they are not needed. I have seen a lot of times when mechanics (personal and professional) put it on as an added safeguard only to cause a major problem for the next guy.If it was not there before you most likely don’t need it.

[rick2130]

it depends on the type of bolt and nut, because there’s a bolt and nut is designed to self lock or by using lock wire, cotter pin etc. basically if the part is subjected to a centrifugal force or any force that the fastener possibly loosen and there’s no way that you can safety that fastener

[EricTheCarGuy]

Quoted From Dad_The_Mechanic:

I have always followed a simple rule if the bolt was tight when you removed it and there wasn’t any on there you don’t need it. Manufacturers spend A LOT of effort to find out if they really need little things like this or not. They save a ton of money by not putting things like this in when they are not needed. I have seen a lot of times when mechanics (personal and professional) put it on as an added safeguard only to cause a major problem for the next guy.If it was not there before you most likely don’t need it.

I could not have said it better myself +++++

[skim3544]

You normally do not use thread locking compound while doing engine work. It is used in places where shaking and rattling may cause the bolt to pop out (Usually suspension components) So generally rule is don’t use it unless the shop manual says to use it. But there is an exception – if you are working on diesel engine, the engine components shake more than gas engines and sometimes bolts may pop out here & there. So you can use it even if the shop manual does not say to use it.

[Author]

Replies