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Ford Truck Club Forum > GARAGE TALK > Garage Talk: The Tool Depot™



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  #1  
Old March 9th, 2014, 10:49 AM
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JSoko JSoko is offline

 

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Exclamation Loctite Threadlocker Color Choices

whenever using Loctite, always use their primer/cleaner for good results

Loctite Threadlocker NEVER choose by color alone.

271, Red: High strength threadlocker for larger diameter hardware.

262, Red: High strength threadlocker for for hardware smaller than that which uses 271, most commonly sold in auto parts stores.

609, Green: Retaining compound, high strength, for mounting slip fit bearings to shafts.

603, Green: Retaining compound, high strength, similar to 609 but good where the parts may be a little oily.

640: Green: Retaining compound, high strength. Similar to 609 and 603. Lacks the oil tolerance of 603. It has a little greater viscosity than 603.

638, Green: rather thick: Ultra strong retaining compound for assemblies with a marked amount of slop in the fit, min 0.004". Don't try to use this stuff for normal bearings on healthy shafts. It sets almost immediately in the tight gap, and you'll never have the chance to get the bearing into place.

290, Green: Wicking product for thread locking AFTER assembly. Medium strength, much stronger than 242 blue in my experience. Not the correct choice for bearing mounting per Loctite.

242, 243 Blue: Classic medium strength threadlocker for most of our threadlocking applications. 243 is the oil tolerant version.

222MS, Purple: Low strength threadlocker for small diameter or otherwise delicate fasteners.

Bottom line:
NEVER choose a Loctite threadlocker product by color alone.


Let's not forget the latest and greatest product. 263. High strength and cures in the presence of contaminants. Cured 2 leaking transmission studs without removing the trans.
this is especially good to seal leaks on Harley Transmissions 1936 - 1984, as the mounting stud openings are tapped through and into the case that's filled with lube

LOCTITE® 263™ is designed for the permanent locking and
sealing of threaded fasteners. The product cures when
confined in the absence of air between close fitting metal
surfaces and prevents loosening and leakage from shock and
vibration. LOCTITE® 263™ is particularly suited for heavy duty
applications such as studs into motor housings, nuts onto studs
in pump housings and other fasteners where high strength is
required. LOCTITE® 263™ provides robust curing
performance. It not only works on active metals (e.g. brass,
copper) but also on passive substrates such as stainless steel
and plated surfaces. The product offers high temperature
performance and oil tolerance. It tolerates minor surface
contaminations from various oils, such as cutting, lubrication,
anti-corrosion and protection fluids.
__________________


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Last edited by JSoko; May 9th, 2014 at 04:38 PM.
  #2  
Old March 9th, 2014, 03:56 PM
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BigBlue79 BigBlue79 is offline
 

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Don't forget as well, most, if not, all applications that you use the Red Loctite on will have to be heated with a torch to break the Loctite. Some have to be blown completely out with a torch.
  #3  
Old March 9th, 2014, 07:05 PM
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A torch ... maybe but most instances do not allow a full flame/heat
a pin-point flame may do, or better yet a direct use of a heat gun

or you can always try to tap smartly with a hammer

no abuse needed


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Last edited by JSoko; March 10th, 2014 at 06:55 AM.
  #4  
Old March 10th, 2014, 06:54 AM
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also don't forget to use one of the Loctite Primers for best results, something I don't do

and Yes, the red stuff can be a real bear


For Those Who Fought For It...
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  #5  
Old January 13th, 2018, 05:39 AM
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CharlieM CharlieM is offline
 

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Thanks Glad I use the Blue, not know why other colors were used makes sense now. thanks for the info

Charles M
2002 F350 XLT 4x4 5.4 Auto
2000 Ranger 4x4 4.0

86 F150 4x4 auto 5.7



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