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Torque multipliers

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Old Nov 15, 2010 | 01:36 PM
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Default Torque multipliers

Other than the obvious purchase of a 300 LB torque wrench how have any others in the group obtained the 295 foot lbs of torque necessary for the front spindle nuts for the 2004-2008 F150 2WD trucks?

I've checked with all of the normal tool spots around here and haven't located a 300 Lb wrench. I've got a 1/2" drive 250 lb wrench and remember once seeing a calculation for achieving higher torques by using a wrench or some kind of adapter off the end of the torque wrench. Any idea's?
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Old Nov 15, 2010 | 02:16 PM
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pneumatic impact wrench. the nice ones come with torque settings
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Old Nov 26, 2010 | 07:08 PM
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100 lbs of force on the end of a 36" breaker bar will get you close.
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Old Nov 26, 2010 | 09:54 PM
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youll have to spend some coin

http://buy1.snapon.com/catalog/tools...e=snapon-store
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Old Nov 26, 2010 | 10:53 PM
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I was wondering the same thing about the 351 ft. lb. torque spec on the lower strut bolt. I am going to be installing a 2.5" HBS leveling kit soon and the lower bolt connecting the front strut to the lower arm calls for the high torque. Unless someone tells you a better way, I was probably just going to take GatorB8's advice and use a breaker bar and just give it some good force.
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Old Nov 26, 2010 | 11:08 PM
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295ftlbs for a spindle nut?!?! i`ve NEVER tighten those that much unless im thinking of sumthing else ur talking the nut that holds the whole hub assymbly on right?
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Old Nov 26, 2010 | 11:27 PM
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My owners manual has a list of torque specifications in it and I can verify that it says 295 pounds.

I installed a frame mounted trailer hitch on my truck. Instructions called for 150 pounds of torque on the largest nuts. First, I used my 100 pound torque wrench to get that far, then I used a 24 inch power handle on my 1/2" drive socket. I put both feet on the frame and pulled with all my might. I was surprised to see how much more the nut moved. At any rate, I tried to break the damn thing off. Based on how much pressure the 100 lb effort took, I am comfortable the extra effort got me there.

However, I do not know about 295 pounds. If it were me, I would do two things: 1) I would talk to a very knowledgeable mechanic or machinist about the issue, and 2) I would get a piece of 5 foot long steel pipe to extend my power handle. I'd get my buddy to hold the socket in place and I would stand, then jump up and down on the end of the pipe. (years ago, I did this and broke my Craftsman socket which Sears replaced free of charge). I'll bet it took more than 295 pounds of torque to break that socket.

I do not profess to know if a pneumatic wrench will exceed the results of my weight and jumping on the extension, but I'd feel pretty good about those results. I figure a 200 pound man jumping on the end of a 5 foot extension pipe would be quite sufficient.

By the way, my manual states it is imperative that a new spindle nut be used every time the hub is removed. I suspect 295 pounds of torque would permanently distort the spindle nut threads.

Last edited by jonquil; Nov 26, 2010 at 11:33 PM.
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Old Nov 26, 2010 | 11:34 PM
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only reason i question it is you WILL crush your bearing and burn bearings up in no time... on the 4wds i know you`ve gotta crank them down good due to the vacum lock hubs... but a spindle nut on 2wd(how i do it) is tighten till snugg spin wheell few times... back it off a hair spin a few more then snugg it up again then do about an 1/8 turn more. if hole doesnt line up for cotter pin go a hair more.....


then just to make sure its good... put the tire on tighten lug nutz... and grab top and bottom and shake it see if u have any play if u do snugg it a lil more...

Last edited by metropolis909; Nov 27, 2010 at 12:10 AM.
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Old Nov 27, 2010 | 01:42 AM
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Originally Posted by metropolis909
only reason i question it is you WILL crush your bearing and burn bearings up in no time... on the 4wds i know you`ve gotta crank them down good due to the vacum lock hubs... but a spindle nut on 2wd(how i do it) is tighten till snugg spin wheell few times... back it off a hair spin a few more then snugg it up again then do about an 1/8 turn more. if hole doesnt line up for cotter pin go a hair more.....


then just to make sure its good... put the tire on tighten lug nutz... and grab top and bottom and shake it see if u have any play if u do snugg it a lil more...
thats the way you do it on old cars. different bearing/nut setup. our trucks, the 2wd spindle nut needs to be torqued to 295 ft/lbs
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Old Nov 27, 2010 | 02:00 AM
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Originally Posted by dmagyar
Other than the obvious purchase of a 300 LB torque wrench how have any others in the group obtained the 295 foot lbs of torque necessary for the front spindle nuts for the 2004-2008 F150 2WD trucks?

I've checked with all of the normal tool spots around here and haven't located a 300 Lb wrench. I've got a 1/2" drive 250 lb wrench and remember once seeing a calculation for achieving higher torques by using a wrench or some kind of adapter off the end of the torque wrench. Any idea's?
DMAG- Harbor Freight sells 2 different 3/4 in. torque wrenches. I think one is a 36 in. and then there is a 42 in. They may be the same price, I'm not sure. I know the 36 in. runs about $80. That's a whole lot better than $700. for a Snap-Off! They're a pretty nice looking TW. I haven't need one yet but when I do that's where I'm going to get it. Have the 3/4 sockets, just need the wrench.

Edit: Just checked and they don't seem to show the 42 in. any more. The one they do have is 33 1/2, not 36 and it is on sale now for $74.99. You can get 20% off coupons everywhere though. About every magazine you pick up any more has them.

Last edited by Code 7; Nov 27, 2010 at 02:26 AM.
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