Floor hole questions

1941 - 1945, MB, GPW Technical questions and discussions, regarding anything related to the WWII jeep.
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Mark Tombleson
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Re: Floor hole questions

Post by Mark Tombleson » Mon Jan 15, 2018 7:08 am

Image

You can see the square top just above the seat edge. That is a pair of H700 keys also.

This is a blow up of this photo, 2-8-44.

Image
MB-NAVY-MZ-1 352625 - 07/20/44 (DOD est.)
U.S.N. 133818
2nd place Restored Class 2008 Portland Convention
MVPA Hall of Fame - 2013


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Chuck Lutz
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Re: Floor hole questions

Post by Chuck Lutz » Mon Jan 15, 2018 8:34 am

I have always been of the opinion that a brass, slotted plug was an EARLY feature and a square-headed plug was LATE.

But that's just my take on things...brass might have given way to the steel plug at the same time the ignition switch went from key to lever.

Anyway, brass became "strategic" and without something like "never-seize" to put on the threads, it might be hard to remove the slotted plugs with even the screwdriver so the plug was introduced.

However....unless the plug could be removed with one of the five wrenches on-board in the tool kit....once the 8" Adj. wrench was dropped in mid 1943 I think, trying to get the 11" Adj in there would be difficult.

Awaiting one of those Willys documents that addresses the change or substantiates the square-headed plug from the git-go in an MB.
Chuck Lutz

GPW 17963 4/24/42 Chester, PA. USA 20113473 (USA est./Tom W.)
Bantam T3-C 1947

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Mark Tombleson
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Re: Floor hole questions

Post by Mark Tombleson » Mon Jan 15, 2018 10:19 am

From here!

viewtopic.php?f=95&t=166005

Sean wrote:
Wed Jul 28, 2010 10:39 pm
Mark Tombleson wrote:What page of the TM, Sean?

I would like to read that but I can't seem to find it in my original.
TM-10-1513 May 15, 1942 ..... page 125 under BODY.

"Brass plugs have been placed in the left and
right front corners to drain the floor".



TM-10-1206 Dec. 1, 1941

page 76 grp No. 1800 Body & Attaching parts
A-2933 ....... Clinch nut- special (for 1/4" pipe drain plug in front floor) .......................No. reqd 2
52984 ........ Plug 1/4" - pipe thread - Slotted (for front floor pan drain hole cover)..........No. reqd 2

page 84 grp No. 2304 Pipe Plug
5138 ........ Pipe plug 1/4" Std............. No. reqd. 3
52984 ...... Pipe plug 1/4" (slotted) ....... No. reqd. 1 I assume this is a misprint as 2 are required.


TM-10-1186 July 1, 1943

page 137 grp No. 1800 Body & Attaching parts
A-2933 ....... Clinch nut- special (for 1/4" pipe drain plug in front floor) ......................MB ...No. reqd 2
A-5120 ....... Plug 1/4" - pipe thread - Slotted (for front floor pan drain hole cover) ........MB ...No. reqd 2

Page 152 grp No. 2304 Pipe Plug
5138 ........ Pipe plug 1/4" Std............. No. reqd. MA 2 MB 3

TM-10-1207 Feb 1 1942

page 49 ... picture of fuel filter... 5138 Pipe Plug - 1/4"


TM-10-1513 May 15, 1942

page 49 ... picture of fuel filter... Willys part No. 5138 .... Ford part No. 353055-S ...Pipe Plug - 1/4"

SO................
5138 is the Willys part number for the square head standard 1/4" pipe plug used on the fuel filter(2) and the fuel tank drain (1) for a total of 3

52984 is the early 41 - 42 part number for the 1/4' slotted floor drain plug ( most likely the brass ones )

5120 is the later 42? early 43? onwards part number for the 1/4" slotted floor drain plug ( most likely changed to steel )

I went back to by BOMs and the hi resolution copy of the original photo of the plug i have and still show the head being square in the listing under:

MB-NOM-12
Group 19.2D Metal Parts After Paint
Page 7 of 17
11/13/42

A-5120 Plug - 1/4 Pipe Thread (Front Floor Pan Drain Hole)

All the BOM into 1945 that I have show the same A-5120.

The 12-10-41 BOM of the MB-MARINE shows the plug as SLOTTED but the part number is cut off.

One think that bothers me is the A-5120 is sometimes listed as slotted? This makes me wonder why different part numbers if the part is the same (A-5120 vs A-5138)?

I'm not sure we are certain the A-5120 is slotted or a square plug?

I installed mine from the underside of the body so the square head does not stick up. :|
MB-NAVY-MZ-1 352625 - 07/20/44 (DOD est.)
U.S.N. 133818
2nd place Restored Class 2008 Portland Convention
MVPA Hall of Fame - 2013

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lowbonnet
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Re: Floor hole questions

Post by lowbonnet » Mon Jan 15, 2018 10:48 am

Thanks guys, that is some valuable information (also the added links to other posts).
June 1942 Ford GPW (script)
Transportation Equipment Co. T1, 1/4 ton trailer

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Re: Floor hole questions

Post by acampbell » Sun Jul 09, 2023 7:55 am

Hi good people!

New to the GPW/MB world. Working on recommissioning my MB slat grill body number 8831 mounted to GPW chassis 14089. The floor drain threads are corroded and will not accept either type of plug. brass slotted or 1/4" pipe. Does anyone know how to tap out these threads? Which tap should I use?

Thanks

Alan
GPW 14089 (with slat grill body #8831)
GPW 30579

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Bill H.
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Re: Floor hole questions

Post by Bill H. » Sun Jul 09, 2023 8:22 am

acampbell wrote:
Sun Jul 09, 2023 7:55 am
Hi good people!

New to the GPW/MB world. Working on recommissioning my MB slat grill body number 8831 mounted to GPW chassis 14089. The floor drain threads are corroded and will not accept either type of plug. brass slotted or 1/4" pipe. Does anyone know how to tap out these threads? Which tap should I use?

Thanks

Alan
You do realize this thread is over 5 years old???

1/4" NPT tap.
Bill H.

"Each shall seek his own kind, in other words, a bird may love a fish but where would they build a home together?" Tevye, Fiddler on the Roof

1952 Dunbar Kapple M100
1953 Willys M38A1
1962 AMC M422A1
1965 Stevens M416B1 X 2
1967 Kaiser M715

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Mark Tombleson
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Re: Floor hole questions

Post by Mark Tombleson » Sun Jul 09, 2023 9:41 am

:P :D
MB-NAVY-MZ-1 352625 - 07/20/44 (DOD est.)
U.S.N. 133818
2nd place Restored Class 2008 Portland Convention
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dpcd67
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Re: Floor hole questions

Post by dpcd67 » Sun Jul 09, 2023 3:08 pm

Alan, open up a new thread and ask your question. No one reads this old stuff.
Ok, some do, but new things are better. Ok, that is not true either, but just open a new thread for a new question.
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OldGPW
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Re: Floor hole questions

Post by OldGPW » Sun Jul 09, 2023 6:55 pm

Hi Alan, welcome to the Gee!

I'm going to take the opposite view of my fellow members, and say that it doesn't matter how old a thread is, but what it's about that matters. And your question fits into the topic being discussed. Some people don't like to read long posts or threads, but coming from someone who does, the longer the thread, the more information is available as reference to anyone -like yourself- who is looking for answers. It's sort of a darned if you do, darned if you don't situation, because if you hadn't replied here someone would have just said you need to google or read a manual you probably don't have.

So on the Gee you will find a lot of great information, and sometimes a lot of differences in opinion :lol: . Now that you have the information about the thread and tap size, do yourself a favor and go to JeepDraw, it's a great source of information and reference too. In fact it's hosted on the same server as this forum. Jon (the owner of JeepDraw) sells reference drawings in case you need to do any body work, but he also has a bunch of WWII jeep manuals that are free to download. If you don't have the manuals, look for the ones that pertain to the G503 (GPW & MB) and get those. The SNL (standard nomenclature list) is a great asset to have, because it lists almost every piece of a jeep, and gives the quantity and part number needed, so you know what you're missing.

Anyway, welcome aboard! :D
Old GPW.

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Mark Tombleson
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Re: Floor hole questions

Post by Mark Tombleson » Mon Jul 10, 2023 10:14 am

Alan, welcome to G503!

You can bring up any thread you like that you do not understand with a post of mine in it and I will receive a notification that you have posted.

Bill, you be nice to the new guy! :wink:
MB-NAVY-MZ-1 352625 - 07/20/44 (DOD est.)
U.S.N. 133818
2nd place Restored Class 2008 Portland Convention
MVPA Hall of Fame - 2013


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