SLAT GRILL- GRILL BOND STRAPS

Nov. 18, 1941 - MB100001 thru Mar. 6, 1942 - MB125809 NO EBAY or COMMERCIAL SALES.
Charlie S.
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Re: SLAT GRILL- GRILL BOND STRAPS

Post by Charlie S. » Fri Jan 08, 2010 5:07 am

Hi Luigi,
tks again for your help.
I sent you a e-mail.
Cheers,
Charlie
Slat Grill #124991 - March 1942
CJ-2A #114467 - July 1947
Spen Model S 1948


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Re: SLAT GRILL- GRILL BOND STRAPS

Post by GI jeeps » Sun Jan 10, 2010 4:37 am

iowa wrote:
Image
One of mine was like that, and several of my early jeeps have had them held in place by split rivets, not screws.
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Re: SLAT GRILL- GRILL BOND STRAPS

Post by Charlie S. » Sun Jan 10, 2010 5:04 am

Hi GIJeeps,
that's a very interesting point.
Maybe the screw and washers are a new things not correct for MB and GPW !!
I was looking in the PART LIST TM-10-1206 , Change 6 Feb1,1942.
Group 2103 Radiator Guard and nothing it's mentioned about 2 screws for bond strap.
They are not mentioned the bond strap either :shock: Do you know in where in the Part List are they mentioned ??
Maybe there is the solution.
Cheers,
Charlie
Slat Grill #124991 - March 1942
CJ-2A #114467 - July 1947
Spen Model S 1948

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Re: SLAT GRILL- GRILL BOND STRAPS

Post by Jeff B » Fri Jan 15, 2010 11:37 pm

Hi Charlie,
I found the radiator brush guard (grill) to hood bonding straps under section 611 (or 612 in later manuals) "Radio Suppression". They are part A-1699 (Bond No. 21 and 22, hood to brush guard, right and left). No mounting hardware is mentioned, therefore they must be retained by the split rivets, just as per Dave's photo's of his slats, and per your review of section 2103. So, it would seem OK on the slat to have it facing rearward (towards the engine), in my opinion. And,definitely retained by the split rivets. The rivet would not then rub on the hood as the bolt heads would do.
Hope this helps. Researching the manuals certainly adds to ones knowledge!
Regards, Jeff B

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Re: SLAT GRILL- GRILL BOND STRAPS

Post by Frank » Fri Jan 15, 2010 11:58 pm

Jeff B wrote:Hi Charlie,
I found the radiator brush guard (grill) to hood bonding straps under section 611 (or 612 in later manuals) "Radio Suppression". They are part A-1699 (Bond No. 21 and 22, hood to brush guard, right and left). No mounting hardware is mentioned, therefore they must be retained by the split rivets, just as per Dave's photo's of his slats, and per your review of section 2103. So, it would seem OK on the slat to have it facing rearward (towards the engine), in my opinion. And,definitely retained by the split rivets. The rivet would not then rub on the hood as the bolt heads would do.
Hope this helps. Researching the manuals certainly adds to ones knowledge!
Regards, Jeff B
Hi Jeff.
I am not saying that this was not the way it was done, but I have a feeling that the rivet would not do the same job as a bolt when it comes to make contact between the bonding strap and the brush guard. And contact is exactly what they where intended to make.
3 of the early slatgrills I have taken apart had bolts for the bonding strap. The rivet might be an "in service" easy fix....
Some more investigation, photos and cross check with early manuals and if some of the gurus with axcess to a BOM could take a look for us it would be great!
Frank..
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Re: SLAT GRILL- GRILL BOND STRAPS

Post by Jeff B » Sat Jan 16, 2010 1:03 am

Hi Frank,
You certainly have a good point regarding the contact. I just noticed the different revisions of the parts manuals listed the bolts / nuts /washers for most of the different bonding straps, but not specifically for the brush guard to hood straps. I wonder if the rivets were initially used at the factory, but field experience proved the rivets made inadequate contact, or perhaps when jeeps went through the radio suppression procedure (where they were then marked with the "S"), the rivets were replaced with bolts?
In Dave's photographs, even though rivets retain the bond straps, the straps appear abraided and worn, as if they were making contact with the hood for a long time.
Hopefully others will be able to contribute more evidence.
Thanks, Jeff

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Re: SLAT GRILL- GRILL BOND STRAPS

Post by GI jeeps » Sat Jan 16, 2010 10:08 am

My read is that rivets were used early on and were replaced by the nut and screw later, not much later though as I have both grills and hoods that show the screws in use by summer 1942. Often easy to tell because they actually wear through the hood after a time.
For now it might make sense for us all to work on determining what is correct for a SGW and go from there.
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Re: SLAT GRILL- GRILL BOND STRAPS

Post by Charlie S. » Sat Jan 16, 2010 1:10 pm

Hi everybody,
first, many thanks for your replies and comments.
Looking IOWA's photo and other I have from Steve Ellis, I guess the split rivets must be with the head down :shock: :shock: .
Is that possible ?
Who has other original photos ?
Cheers,
Charlie
Slat Grill #124991 - March 1942
CJ-2A #114467 - July 1947
Spen Model S 1948

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Re: SLAT GRILL- GRILL BOND STRAPS

Post by GI jeeps » Sat Jan 16, 2010 1:20 pm

Charlie S. wrote:Hi everybody,
first, many thanks for your replies and comments.
Looking IOWA's photo and other I have from Steve Ellis, I guess the split rivets must be with the head down :shock: :shock: .
Is that possible ?
Who has other original photos ?
Cheers,
Charlie
Most of the ones I've seen have been with the heads up. Keep in mind that they were meant to make contact with the bonded spaces on the hood. I can see why the rivets would not be the best way to accomplish that but I have no doubt they were used for a time.
Probably easier to install upside down whether they were meant to be that way or not.
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Re: SLAT GRILL- GRILL BOND STRAPS

Post by Charlie S. » Sat Jan 16, 2010 6:48 pm

Hi,
look this photo,how is the split rivet
Image
Cheers,
Charlie
Slat Grill #124991 - March 1942
CJ-2A #114467 - July 1947
Spen Model S 1948

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Re: SLAT GRILL- GRILL BOND STRAPS

Post by steven ellis » Sun Jan 17, 2010 8:52 am

Charlie--I will try and send you a picture of mine. Mine is just like Iowa's. All of the rivets are "upside down" split up and in the grove of t he welting. and the bonding strap is towards the engine too. kind of makes sense too, the rivet would not rotate from engine viberations and it give a little more surface area on the canvas. 124997
GPW 314 DOD 3-14-42
GPW 227 DOD 2/42 2062315 (actual) & US NAVY 195086 hood numbers
MB124997 DOD 3/4/42 2079954 (actual) Slat grill
42 WC51
M38 DOD 3/52 Hood# 20908270 actual

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Re: SLAT GRILL- GRILL BOND STRAPS

Post by GI jeeps » Sun Jan 17, 2010 3:44 pm

Perhaps my recollection is faulty. I'll check and see, they may have been upside-down after all.
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Re: SLAT GRILL- GRILL BOND STRAPS

Post by Charlie S. » Sun Jan 17, 2010 6:35 pm

Hi Guys,
looks like we had opened another Pandora Box !!!!!!!!!! :D :D
I want to come back to the Part List TM-10-1206 Group 2103 . There is mentioned 7 split rivets 9/64"' x 9/16" for a slat grill.
The account is very easy ........ how many holes for the radiator hood liner has the SG grill ?
I counted 9 !!
Image
so what happens with the other 2 split rivets? or must be the screws with bolts ?
Cheers,
Charlie
Slat Grill #124991 - March 1942
CJ-2A #114467 - July 1947
Spen Model S 1948

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Re: SLAT GRILL- GRILL BOND STRAPS

Post by Hobo » Sun May 02, 2021 1:56 am

Hi guys,

have just started restoring a Canadian Contract 241 Slat Grill. It seems to me, that the grill has not been through any rebuilding process and on this one the split rivets are "upside down" and the bond straps have the open end to the fron and are fixed with rivets also. The hood has still some original paint and traces of solder at the space were the bond straps meet and does not show any wear as one finds on other Jeeps with bolts used.

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Lars-Uwe Rudek
Image
GPW 213313 (HOBO) DoD 7-26-44
GPW 261254 (SUSIE BLUE) DoD 3-26-45 (est.)
MB 177547 (JONSEY) DoD 9-28-42
MB 290875 (HOBBES) DoD 12-21-43


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