80 or 130?
#2243940
01/30/17 02:07 PM
01/30/17 02:07 PM
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Joined: Jul 2006
Posts: 4,179 California
mickm
OP
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OP
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Joined: Jul 2006
Posts: 4,179
California
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I'm putting a new spindle on the car, and the two lower bolts, the bigger ones, that tie the brake backing plate to the spindle, and then the lower ball joint, call for 100 ft/lbs. unfortunately, the castle on the nut exactly covers the cotter key hole at 100. if I back it off to the previous slot, it sits at 80 ft/lbs. if I take it to the next one, it's easily 130 ft/lbs, maybe a little more.
which way should I go?
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Re: 80 or 130?
[Re: L.R Helbling]
#2243962
01/30/17 02:49 PM
01/30/17 02:49 PM
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Joined: Jan 2003
Posts: 28,068 Irving, TX
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Senior Management
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Irving, TX
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Try tracing these with the proper tap and die to get them cleaned out. Most people do not have the proper tap and die to do that work. That is why I suggest you NEVER use a tap and a die to clean threads on both sides of an existing fastener. Many times it will lead to a sloppy fit and weaker joint. Taps and dies both come in different fits. They are sized for different applications and classification of thread fit. If you get taps and dies that are mismatched by a fair percentage you can get a fastener combination that is downright dangerous. With Harbor Freight junk there is no telling if the tools are even built to a recognized standard. If the only way you have to clean a thread is with a hardware store tap and die set then only do the nut or the bolt. Never do both. At that point you need to replace one or both fasteners.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: 80 or 130?
[Re: L.R Helbling]
#2243963
01/30/17 02:49 PM
01/30/17 02:49 PM
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Joined: Jul 2006
Posts: 4,179 California
mickm
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OP
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California
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I'd try removing the castle nut and cleaning the threads on the inside as well as I could and also the bolt threads that attach to the backing plate and re-torqueing. Try tracing these with the proper tap and die to get them cleaned out. I would not go 80 ft/Ibs. I didn't tap them, but I did clean well. not sure if that was enough. it sounds like you are saying that they are designed to align right at 100 ft/lbs?
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Re: 80 or 130?
[Re: mickm]
#2243968
01/30/17 02:55 PM
01/30/17 02:55 PM
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Posts: 28,068 Irving, TX
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No, they are not designed to align at 100 lb/ft. The individual parts are mass produced, not a matched set.
With 8 slots to chose from there's a pretty good chance it will align at 100 lb/ft the first time out but it isn't guaranteed.
Ball joints are machined tapers designed to lock together through a proper fit. The nut is there to pull them together properly and is left in place as added insurance. After all, they won't hold together under all circumstances.
130 lb/ft won't hurt the fastener. That size thread will take far more torque.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: 80 or 130?
[Re: NANKET]
#2243985
01/30/17 03:14 PM
01/30/17 03:14 PM
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OOPS.
Still, they are not matched pairs. No worries about going 130 lb/ft on those.
5/8-18 grade 5 bolts are rated for 128 lb/ft and grade 8 are rated at 180 lb/ft.
I don't recall the rating on those bolts but I can't picture them using a cheese grade bolt in there.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: 80 or 130?
[Re: L.R Helbling]
#2243999
01/30/17 03:38 PM
01/30/17 03:38 PM
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Joined: Jan 2003
Posts: 28,068 Irving, TX
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Senior Management
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Try spinning your castle nut from different positions to see if it grabs early or late. Common nuts and bolts have single start threads. They will only start in one position. Milk bottles, soda bottles, and things that need to move large distances with few turns use 2, 3, or 4 start threads where you can clock them and try another starting position.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: 80 or 130?
[Re: L.R Helbling]
#2244185
01/30/17 08:11 PM
01/30/17 08:11 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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Posts: 36,041
Lincoln Nebraska
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Might be overkill but you could drill another roll pin hole in the threads at that end. The nut will be further on than the hole(s) locations so integrity wont be compromised.
live every 24 hour block of time like it's your last day on earth
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Re: 80 or 130?
[Re: mickm]
#2244237
01/30/17 09:16 PM
01/30/17 09:16 PM
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Joined: Jan 2003
Posts: 25,910 Rio Linda, CA
John_Kunkel
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100 ft/lbs is the minimum torque.....it's assumed that the hole won't line up so you're expected to tighten (never loosen) the nut until the hole lines up.
The INTERNET, the MISinformation superhighway
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Re: 80 or 130?
[Re: John_Kunkel]
#2244241
01/30/17 09:22 PM
01/30/17 09:22 PM
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Joined: May 2003
Posts: 1,751 Graham, WA
Polarapete
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Graham, WA
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Of course you could always buy new grade 8 bolts and self locking nuts or use Red locktite on the nuts. 3M weatherstrip adhesive on the bolt threads will ensure they don't vibrate loose, too...but what do I know?
1986 Dodge Ramcharger 440 2wd, Bracket Racer Under Construction 1998 Ram 2500 QuadCab, new daily driver. 2008 Honda Element 2014 Carry-On 7x14 Cargo Trailer
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Re: 80 or 130?
[Re: mickm]
#2244336
01/30/17 11:21 PM
01/30/17 11:21 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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Lincoln Nebraska
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took the nuts off, cleaned them again, put the tiniest bit of lube on them, and switched them. first one went on the same way, hole completely covered, so just kept cranking until it was clear. second one went on and the hole was nice and open at 100 ft/lbs. done! That was too easy!
live every 24 hour block of time like it's your last day on earth
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Re: 80 or 130?
[Re: Jjs72D]
#2244386
01/31/17 12:04 AM
01/31/17 12:04 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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Lincoln Nebraska
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You can also use a thin washer. This results in a slightly different position of the castle nut. Ding ding ding I do believe we have a winna.
live every 24 hour block of time like it's your last day on earth
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