top air deflector attachment hardware question

Nov. 18, 1941 - MB100001 thru Mar. 6, 1942 - MB125809 NO EBAY or COMMERCIAL SALES.
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Chris K
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top air deflector attachment hardware question

Post by Chris K » Fri Nov 17, 2017 12:42 am

Hello,

Could you please help me with this: I noticed on my jan 7th 1942 slat grill (body 9442) that it has 6 peculiar flat head screws that hold the hood air deflector (see picture): they seem original and almost impossible to detach. The hood seems original to the jeep (TR20 bolts on the catches, deflector with horsehair with staples and securing strip – all the bolts look like they have never come off). I attached some images..
flat head deflector screws.jpg
flat head deflector screws.jpg (74.96 KiB) Viewed 2355 times
deflector screw nuts.jpg
deflector screw nuts.jpg (130.02 KiB) Viewed 2355 times
deflector n strap.jpg
deflector n strap.jpg (87.83 KiB) Viewed 2355 times
However....most of the wartime pictures I could find seem to point to round head screws, not flat, as also mentioned in the sources that I at least could access:

TM10-1206 (feb 1942), it says on page 29:
51492 26483-S screw 1/4’’-20 x 1/2’’ (top air deflector to hood) – qty 6.
and on page 83 that 51492 is a round head screw.

Also an earlier post by Mark Tombleson tells that the 11-5-42 manual is also listing the ‘WO-51492 Screw – Mach. Rd. Hd., 1/4-20x1/2, quantity 6‘ as the appropriate screw for the top air deflector.

Questions – have you seen this type of flat head screw before? Could this be an early versus late slat thing?

is there an earlier parts manual than the Feb 1942 version and does anybody know what is mentioned there about these screws?

thanks very much,
Chris Kochheim
1943 Ford GPW - 1942 Willys MB Slat - 1943 Willys MBT


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David
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Re: top air deflector attachment hardware question

Post by David » Fri Nov 17, 2017 1:48 am

I have the round head screws, and as far as I can see the deflector was never separated from the hood, not even during restoration. Hood is original to body #13772, MB II0247, d.o.d. January 8, 1942. Also located in The Netherlands :D

Could it be you have round head screws too that someone ground flat for some reason?
Attachments
David3 021.jpg
David3 021.jpg (37.67 KiB) Viewed 2349 times
Willys MB II0247, body# 13772, d.o.d. 8/1/42

Chris K
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Re: top air deflector attachment hardware question

Post by Chris K » Fri Nov 17, 2017 2:09 am

Hi David,

thanks for your post :) . No, it seems very unlikely that somebody was grinding them flat: they are all exactly identical and have also some kind of dimple in the screw's head. Length of the screw and thread seem also precisely ok.

best regards,
Chris
1943 Ford GPW - 1942 Willys MB Slat - 1943 Willys MBT

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DanoZeman
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Re: top air deflector attachment hardware question

Post by DanoZeman » Fri Nov 17, 2017 2:19 am

My 45 had screws holding the lube chart that looked exactly like that. Was determined that the hood had been sanded with screws in place leaving them to look like that.


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Mark Jesic
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Re: top air deflector attachment hardware question

Post by Mark Jesic » Fri Nov 17, 2017 11:52 am

Chris, mine is exactly the same as Davids, Feb 42 slat grill. :D

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David
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Re: top air deflector attachment hardware question

Post by David » Sat Nov 18, 2017 9:38 am

I should add that the screws are not fully 'domed'... They seems to flatten out a bit near to the top. If you compare their profile to the domed screw used on the hood block you should see what I mean.

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Fred Coldwell
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Re: top air deflector attachment hardware question

Post by Fred Coldwell » Sun Nov 19, 2017 9:56 am

Chris K wrote:
Fri Nov 17, 2017 12:42 am
Hello,
. . . Questions – have you seen this type of flat head screw before? Could this be an early versus late slat thing? Is there an earlier parts manual than the Feb 1942 version and does anybody know what is mentioned there about these screws? thanks very much, Chris Kochheim
Hi Chris:

TM-10-1206, Change No. 4, Dec. 1, 1941 is the earliest known published Parts List for the slat grille MB. On page 30, under Group 0503-Water Pump, Fan & Belt, it shows 6 # 51492 screws 1/4"-20 x 1/2" are used to attach the Top Air Deflector to the Hood. This is the same data as found in the Feb. 1942 TM-10-1206 Parts List. I hope this information helps you.
Happy Jeep Trails,

Fred Coldwell
1944 CJ2-09 - X33
1945 CJ2-26 - X50
1944 Dodge T233 CC
1945 Dodge T233 Utility
MVPA #283C

Chris K
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Re: top air deflector attachment hardware question

Post by Chris K » Tue Nov 21, 2017 1:05 am

Thank you all - very good info!

DanoZeman: did you mean to say that these screws are identical to the ones David was showing or to the image that I posted?

thanks,
Chris
1943 Ford GPW - 1942 Willys MB Slat - 1943 Willys MBT

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Re: top air deflector attachment hardware question

Post by baxterwood » Sun Jul 19, 2020 1:55 pm

I am not sure if this post is still 'live' but just to add some details regarding a Slat Grill hood I have which came off an early Feb '42 truck that I obtained in knock down form.

It is the correct hood with 9 section hinge with the original rad. air deflector plate still with it's wire fasteners and fitted by what appears to be the original screws, nuts and lockwashers securing it in place, it certainly looks like they have never been off or removed, strangely, of the six screws the two in the centre are round head and the four outer examples, two each side are slightly flat head!

Oddly though this hood also has holes for the grease gun bracket, although since this truck has the addition of the alloy dimension plate above the data plates I suspect that is may have been through a mid war rebuild which would include these two being added.

No doubt if I am incorrect someone will fill me in!

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Re: top air deflector attachment hardware question

Post by Adam » Mon Jul 20, 2020 5:30 am

Old posting, arent there 3 versions of the air deflector? all relating to staples, first had none, last is the one pictured? Somebody updated it. Lots of time and hands can change lots of things, only takes a dozen years and a few coats of the po paint to make it look like its been there forever.

Adam

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Re: top air deflector attachment hardware question

Post by BERLIN RED » Mon Jul 20, 2020 10:24 am

I believe the 1st pattern had staples but didn’t have the 2 clearance notches cut to clear the rubber hood block mounting hardware.

It appears that the type 2 deflector was put into production before the windshields where lengthened in January of 41. As I’ve seen several posts showing the type 2 deflector on hoods with long hood to windshield latches. I doubt many air deflectors needed to be replaced during the war.

2nd pattern has 2 clearance notches for hood block mounting hardware and staples.

3rd pattern has 2 clearance notches for hood block mounting hardware and no staples.

Hope this is what you where asking about.


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