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  #1  
Old 17-07-17, 03:03
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Jordan Baker Jordan Baker is offline
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Default Box to frame U Bolts

I tried doing a search and didn't find anything.

Im looking for the size of U-Bolts and qty I need to secure the box down to frame on the C15a.

Thanks
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  #2  
Old 17-07-17, 03:33
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Jordan,

this may be of use to you once you have the sizes sorted.

My local heavy duty truck shop in Kingston makes U bolts to order, you spec it, they quote it and make them.

If you cant find what you need I am happy to help get them made for you.

I asked them to quote a job and was of the opinion that they were value priced to the point I could not make them for the money they wanted.

Good luck.
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  #3  
Old 17-07-17, 03:47
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OK thanks Robin.

I seem to remember these were common size, but my memory is only being very selective on empty folders. Aka.... i can't remember
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  #4  
Old 17-07-17, 03:55
rob love rob love is offline
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Agree, a spring/suspension shop is what you want. They can hammer out U bolts to whatever spec you give, and for prices similar or cheaper than the Cdn tire stuff.
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Old 17-07-17, 14:34
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Default Wood blocks at U-bolt locations?

Hi Jordan

I remember see something on varrious CMPs about blocking in the frame rail and body rail at the U-bolt to keep from deforming the frames. My HUP has oak block, remember also service bulletin about adding blocks or adding a steel plate to box the frame at the U-bolt locations.

Cheers Phil
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  #6  
Old 17-07-17, 16:04
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Quote:
Originally Posted by Jordan Baker View Post
I seem to remember these were common size,
Although they are listed in the Body Parts List, I could not find info re. their sizes. If you want I can go measure them up and make some reference pictures?

HTH,
hanno
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  #7  
Old 17-07-17, 18:40
Bob Carriere Bob Carriere is offline
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Default U bolts??? Are we sure???

Are we sure they used U bolts?

All the CMP I have seen had long bolts going through thick plates to both the bottom of the frame and on top under the box???

If U bolts are used they would need to be installed up side down...U pointing up... and a 1/4 inch on top. They will not fit otherwise in the right space un de the frame. Very critical dimensions on the length of the U bolt as the top threaded end must fit the exact thickness of the frame plus the wooden spacer und the box and still have enough length to instal the top plate, lock washer and long U bolt nuts....if the U bolt is too long, once the boxes sits on the frame you will not be able to fit the nut.......

I have fabricated long bolts with plates at both end as that is the only way I have seen them installed......... Could it be that all the trucks I have seen had the boxes removed and reinstalled with bolts and plates sometimes in their career??

I have seen wooden blocks to stiffen the frames..... made of thick hard wood and groved on the inside portion to allow the inside bolt to hold it in place.......

Comments!!!
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Old 17-07-17, 21:52
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Box is a 2C1 on my 1943 F15A Cab 13.

U-bolt at rear of chassis:

Click image for larger version

Name:	IMG_9424.jpg
Views:	0
Size:	612.8 KB
ID:	92307

Mid-chassis, this one has a spacer block:

Click image for larger version

Name:	IMG_9428.jpg
Views:	0
Size:	601.6 KB
ID:	92308

These are bad phone shots, I can make proper pics and take dimensions.

HTH,
Hanno
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  #9  
Old 17-07-17, 22:24
Bob Carriere Bob Carriere is offline
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Default Thanks Hanno

What are the dimensions of the bolts.....half inch or bigger and thickness of the plates??

Now for my next question...... where do we find spare parts listings for the cargo boxes???? All my manuals deal with the chassis, cab and mechanical components....... was there another manual for the box components????

Thanks
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  #10  
Old 17-07-17, 23:18
Grant Bowker Grant Bowker is offline
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For those who may not know, I have Alex Blair's manual collection and the only reference to body construction is 1941 version reference in the post Hanno links to above.
I don't have material on the Lindsay construction for the house bodies or the for the later steel cargo bodies (and the machinery bodies made from them).
Also not known are the construction details for trailer bodies (except that some of them are very similar to the later steel bodies - may use some identical parts or sub-assemblies like tailgates).
I would be happy to hear from anyone with details mentioned.
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  #11  
Old 18-07-17, 04:59
Robert Sexton Robert Sexton is offline
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Default U bolts

I have a C15 with a Australian No 1 timber body.The bolts that hold the body to the chassis are as described by Bob Carriere. The cup head bolt passes through a plate with a square hole to lock the bolt from turning and spread the load across the body floor and then another plate under the chassis puts the pressure across the bottom of the chassis rail.My body has a chassis stiffener/spacer grooved to fit the bolt and sit snug inside the chassis rail.
All very interesting,
Robert
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  #12  
Old 18-07-17, 19:01
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I took another read through my spare parts book and found the following.
Attached Thumbnails
IMG_3168.jpg  
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  #13  
Old 19-07-17, 02:12
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And I checked one of my other references and answered this question.

Anyway, per the chart the correct diameter should be 5/8's and the threaded ends long enough for two nuts.
Attached Thumbnails
Body Ubolts01.JPG   Body Ubolts02.JPG   Body Ubolts03.JPG  
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  #14  
Old 19-07-17, 11:38
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Excellent info Jordan, thanks for sharing!
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  #15  
Old 04-08-17, 05:28
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Im about to install my box to frame bolts but I'm not sure if this is correct. The shop gave me plates long enough to clear the wider channel on the box frame. They said to then just use an impact gun and tighten them right up. My questions are is it fine to have a gap between the rods and the truck frame? On the inside do I need to make some hard wood spacers?
Attached Thumbnails
IMG_3318.jpg  
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  #16  
Old 04-08-17, 12:31
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Twist them so the the shaft of the bolt is as close to the frame as possible to avoid having the top and bottom plates flex under load.
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  #17  
Old 04-08-17, 18:49
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Default Yes to the wood blocking

Hi Jordan

Yes, too the wooden blocks, particularly as there are service bulletins to install blocking to CMPs in service.

Without the blocking would be careful about over tighing the bolts, would be concern about the open side of the channel bending.

I tighten my bolts by hand, and used Locktight on the threads, generally check them in my bolt check of drive shafts, links and wheel lugs in the spring.

Cheers Phil
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  #18  
Old 04-08-17, 18:55
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Ok thanks for the advice Charlie and Phil.

Does anyone have a copy of the service bulletin for the wooden blocks they can post up? I've gone through my bulletin book and didn't see it.
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  #19  
Old 04-08-17, 22:28
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Jordan,

See my pics above.
The front ones have a wooden spacer block, this is a little wider than the channel it sits in.
The rear ones are next to the cross member, at that point the chassis rail is strong enough, so no wooden spacer needed.

HTH,
Hanno
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  #20  
Old 03-09-17, 19:56
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Picked up a number of NOS wooden frame blocks yesterday. There is a number of different sizes to fit the different sections of the frame.
Attached Thumbnails
IMG_6238.jpg  
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