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Loctite is a pain! #4484834
08/10/17 01:44 PM
08/10/17 01:44 PM
Joined: Jan 2009
Posts: 2,469
Rochester, MI, US, World
Klutch9 Offline OP
Klutch9  Offline OP
Joined: Jan 2009
Posts: 2,469
Rochester, MI, US, World
Had to replace a motor mount on the Fusion today. Of the fasteners that hold the mount to the body of the car, 2 of them are bolts with blue Loctite applied from the factory. I've read stories that these bolts in particular are tough to remove, and boy were those stories right! Took a lot just to get them to budge, with a loud "crack!" when they finally did. They didn't get easy to turn until about halfway out; until then I still had to wrench real hard to get them to turn.

When going to install the new mount, I applied some new Loctite blue to the fasteners, and started them all by hand. These two bolts took a LOT of fighting to get seated, from about the point where they were halfway threaded. It was almost like they were cross-threaded, but I assure you they weren't; I started the first few turns by hand. They were so hard going down that I was sure I had seated them, but nope, still a ways to go. Finally the one seated, and I knew this only because I couldn't move the mount anymore. The second bolt I also assume seated fine, but took forever. I really have no idea now much the final torque value was, since I needed an 18" breaker to get them to go back in.

These were big bolts, and I assume Loctite makes the assembly and removal process more difficult, but is this normal? Maybe the fact that it was mixed with a little rust didn't help.


'11 Fusion SE 2.5L - 83k miles - HK 0w20 syn, Wix XP filter
'08 Sedona LX LWB 3.8L - 129k miles - Havoline HM 5w20, Auto7 filter
Re: Loctite is a pain! [Re: Klutch9] #4484843
08/10/17 02:00 PM
08/10/17 02:00 PM
Joined: Jan 2013
Posts: 911
California
Kool1 Offline
Kool1  Offline
Joined: Jan 2013
Posts: 911
California
Did you replace the bad mount with an OEM mount?

Re: Loctite is a pain! [Re: Klutch9] #4484857
08/10/17 02:37 PM
08/10/17 02:37 PM
Joined: Jan 2008
Posts: 521
Richmond, BC, Canada
mechjames Offline
mechjames  Offline
Joined: Jan 2008
Posts: 521
Richmond, BC, Canada
I bet that the OEM hardware uses crush nuts in addition to the loctite. There is no way to spin those crush nuts on and off by hand.


86 Mustang 5.0L 170km - Amsoil XL 5w30 / Baldwin B2-HPG
14 Ram 1500 5.7 - Amsoil XL 5w20 / Baldwin B7443
98 Jeep ZJ 5.9 - Amsoil OE 10w30 / Baldwin B34
Re: Loctite is a pain! [Re: mechjames] #4484947
08/10/17 04:39 PM
08/10/17 04:39 PM
Joined: Jan 2009
Posts: 2,469
Rochester, MI, US, World
Klutch9 Offline OP
Klutch9  Offline OP
Joined: Jan 2009
Posts: 2,469
Rochester, MI, US, World
Originally Posted By: mechjames
I bet that the OEM hardware uses crush nuts in addition to the loctite. There is no way to spin those crush nuts on and off by hand.


Hardware is exactly the same. The mount is just stamped sheet metal and the bolts pass through it.


'11 Fusion SE 2.5L - 83k miles - HK 0w20 syn, Wix XP filter
'08 Sedona LX LWB 3.8L - 129k miles - Havoline HM 5w20, Auto7 filter
Re: Loctite is a pain! [Re: Klutch9] #4484957
08/10/17 04:50 PM
08/10/17 04:50 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
You're supposed to remove the old Loctite before applying new Loctite.

Re: Loctite is a pain! [Re: Merkava_4] #4484997
08/10/17 05:30 PM
08/10/17 05:30 PM
Joined: Jan 2009
Posts: 2,469
Rochester, MI, US, World
Klutch9 Offline OP
Klutch9  Offline OP
Joined: Jan 2009
Posts: 2,469
Rochester, MI, US, World
Originally Posted By: Merkava_4
You're supposed to remove the old Loctite before applying new Loctite.


Ah, that could be it blush oh well, they're in there now. Although there wasn't really any Loctite buildup on the bolts when they came out; just a blue stain almost.


'11 Fusion SE 2.5L - 83k miles - HK 0w20 syn, Wix XP filter
'08 Sedona LX LWB 3.8L - 129k miles - Havoline HM 5w20, Auto7 filter
Re: Loctite is a pain! [Re: Klutch9] #4485064
08/10/17 06:19 PM
08/10/17 06:19 PM
Joined: Jan 2009
Posts: 2,469
Rochester, MI, US, World
Klutch9 Offline OP
Klutch9  Offline OP
Joined: Jan 2009
Posts: 2,469
Rochester, MI, US, World
Although there were 2 other bolts that I also just added more Loctite to during reassembly, and I didn't have this issue with them. One of these bolts was quite large. I'm thinking rust played a role with the other 2 being very resistant to coming out and going back in.


'11 Fusion SE 2.5L - 83k miles - HK 0w20 syn, Wix XP filter
'08 Sedona LX LWB 3.8L - 129k miles - Havoline HM 5w20, Auto7 filter
Re: Loctite is a pain! [Re: Klutch9] #4485083
08/10/17 06:43 PM
08/10/17 06:43 PM
Joined: Dec 2006
Posts: 1,785
NY, NY
NYEngineer Offline
NYEngineer  Offline
Joined: Dec 2006
Posts: 1,785
NY, NY
When I do stuff like that I chase the hole with a tap and at least wire wheel the bolt. Then add new Loctite.

Re: Loctite is a pain! [Re: NYEngineer] #4485315
08/11/17 02:05 AM
08/11/17 02:05 AM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Sometimes even a wire wheel won't take the stuff off; when that happens, I clamp a sewing needle into a pair of vise-grips and pick the stuff out.

Re: Loctite is a pain! [Re: Klutch9] #4485363
08/11/17 05:27 AM
08/11/17 05:27 AM
Joined: Jun 2015
Posts: 537
New York
NoNameJoe Offline
NoNameJoe  Offline
Joined: Jun 2015
Posts: 537
New York
Yeah I would have done what NYEngineer said, chased the hole and wire wheeled the bolt. I feel like it was probably the rust that did it more than not.

There have been times where I had to remove fasteners that didn't have any thread locker and it seems the torque needed to spin it (not break it free) is a function of how rusted the threads are.

Once I get the bolt out I usually chase the hole and wire wheel the bolt and then it's like night and day when I'm putting it back in, only needing to spin the bolt with my fingers now. Also a little bit of oil like penetrating oil makes a big difference too (but I think most torque specs are dry specs so watch out).

Those times I really had to torque on it the whole way to get it out, the fasteners made screaming noises as I turned them, so loud you could have heard it half way down the street. When it finally did come out the friction must have been severe because the fastener that started out cold was then searing hot, so hot I couldn't hold it without burning my hand.


2015 Civic LX Coupe
Re: Loctite is a pain! [Re: Klutch9] #4485370
08/11/17 05:38 AM
08/11/17 05:38 AM
Joined: Dec 2006
Posts: 8,001
Canuck living in California
KrisZ Online content
KrisZ  Online Content
Joined: Dec 2006
Posts: 8,001
Canuck living in California
If the original dab of the thread locker was still there, I wouldn't apply more thread locker to the fastener, unless I cleaned off the old stuff off. I hope you don't have to remove the mount again, it will be even more difficult the next time around.

Up here in Canada, rust is an excellent thread locker. I've had plenty of fasteners that broke free no problem, giving me a false sense of hope, only to shear off during the extraction. Fun times LOL


2015 Dodge Grand Caravan-27k miles.
2006 Mazda 3-163k miles
Re: Loctite is a pain! [Re: Klutch9] #4486009
08/11/17 06:07 PM
08/11/17 06:07 PM
Joined: Jun 2011
Posts: 1,802
Crawfordville FL
SilverFusion2010 Offline
SilverFusion2010  Offline
Joined: Jun 2011
Posts: 1,802
Crawfordville FL
I've twisted the head off a bolt on many a car that lived within 3 miles of the coast here. Salt air is right up there with salted roads for eating up a car. The salt on the roads is worse but I'm 13 miles from the coast and a chromed tool will have rust spots in a week if left in the garage. It's quite impressive


2010 Ford Fusion SE 3.0L V6, 181 miles M1 HM 10w-30
Re: Loctite is a pain! [Re: Klutch9] #4486224
08/11/17 11:21 PM
08/11/17 11:21 PM
Joined: Jun 2015
Posts: 537
New York
NoNameJoe Offline
NoNameJoe  Offline
Joined: Jun 2015
Posts: 537
New York
Quote:
and a chromed tool will have rust spots in a week if left in the garage. It's quite impressive

Wow, can imagine how awful that would be.


2015 Civic LX Coupe

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