msjdbman
SW Michigan
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Joined: 04/22/2009
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Well, I figure I got lucky this evening. I went to pull the pin box off my fiver to drop it to the lower holes in the box frame, and the bolts were loose. Not so much that they rattled or that the box would move yet, but it took zero effort with a wrench to loosen them. The nuts are poly locks, so they may have been fine for awhile, but I will feel so much better when they are reinstalled and TIGHT. So....always check the hardware!!!
2008 Duramax/Allison LT2 Crew cab Standard Box. Hellwig Air Assist.
1996 Terry 27 5J
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mapguy
Puget Sound
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Joined: 09/02/2007
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Did you use medium strength thread locker on the reinstall? IMO flat (SAE) washers and stover lock nuts or flat washers, regular nuts and threadlocker for me -of course a torque wrench! On all critical bolts/nuts like these.
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msjdbman
SW Michigan
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I haven`t done the reinstall yet. I will be painting the box first. The bolts and poly locks are fine...but I will tighten them securely to be sure.
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jim87vette
Arizona
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Joined: 07/25/2008
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Good you caught that.I kinda go around and give a once over but I should use a torque wrench..thanks for the heads up.
08 GMC 3500 Dually Duramax
96 Chevy 2500 6.5
05 Yamaha Rhino
04 Gearbox 335FS 5er 14k wet
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robertbick
Upstate NY
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Joined: 07/05/2006
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I lowered my pin box a few weeks ago and added threadlocker to keep the nuts from working loose. No one likes loose nuts. 
Bob
2008 Chevy Silverado 2500HD 4X4 LTZ
2010 Keystone Cougar 276RLS Pictures
PullRite Superglide 14K Hitch
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gar_fanatic
Iowa
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Joined: 03/13/2008
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robertbick wrote: No one likes loose nuts.
I do, it's fun to chase them around to put them back into the asylum! 
You were very lucky this time.  Safe travels!
Me, my DH, my DD (7) and DS (3)
'09 Puma PF295BHSS 33 1/2' Bunk house (Finally-a camper I'm proud of!)
'04 Ford F-350 crew cab 6.0L PowerStroke diesel "the haulin hawg"
Owners of an auto repair shop-Working hard to play hard later
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redsb3
Tucson
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Joined: 09/30/2007
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If by poly locks you mean the nuts with a plastic ring on one side, those are lock nuts but they are one time only use. Your supposed to replace them when taken off because they will never securely lock again. If you are going to reuse them, use some thread lock as suggested.
2005 GMC Sierra SLT CC/SB with 6.6L Duramax/Allison
2002 Automate 5W, 32 ft, 13,280 GVWR
Valley Glider Hitch
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George H
Washington
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Joined: 06/27/2006
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I chose to use new grade 8 bolts and new poly lock nuts when adjusting pin box. Torque to 150+ lbs. A few thousand miles and nothing has moved or loosened.
George, Juanita and Mandie (boss Shar-Pei)
01 F350, PSD, DRW
05 Carri-Lite 32RS3
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Frank_EP
Fountain Valley, CA
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Joined: 01/30/2004
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Upon installing our 5th Airborne, I changed to original
4 grade 5 bolts to 8 grade 8 bolts with hardened washers
and Nylock nuts. I stuck the original, still serviceable,
bolts and nuts into unused holes in the pin box. It could
be that somebody will need them on the road -- who knows.
Seems like a simple upgrade.
2003 Lance 1071 maxed out plus 200 watts PV, accumulator and bottle opener
2004 Chevy 2500HD Duramax 167", Hellwig, Reese Titan, Reese Front, LineX, AirLift, bed mat, Rancho9000, Rickson 19.5" Eliminators with Mich 225/70 XDE M/S
KF6JGX; 5W on Yaesu FT530
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duramaxracer
Ontario Canada
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Poly lock nuts one time use as stated above. Best to replace with grade 8 bolts, flat washers and stover nuts (no plastic!) locking nuts. Will not loosen after torquing up.
2001 Volvo VNL 770
Vovlo VED 12, 10sp Autoshift
2005 Mobile Suite 38RL3
http://picasaweb.google.ca/billandjoan
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