What's missing in pic, plug? no plug?

[Speddmon]

Phil, I can clearly see in that second picture that his headlight fluid is a bit low. Is that why everybody is scoping out the mud hole?

 

[Recovry4x4]

Another explanation of the TMs for the deuce. In the ones DH listed you see the one common thing, 209. That is the series. I prefer to guide users to the 361 series. They encompass the same info with just 5 books. The bad part is the -10 owners manual is not released to the public yet but it's all over the www for free. Summary; TM 9-2320-361-10 is the operators manual. TM 9-2320-361-20 is the unit maintenance manual. Think of it as the field mechanic manual. There is also a -20P which is a parts manual (see the P). Lastly is the TM 9-2320-361-34 which is the shop manual and its part brother the 34P. These are a great resource without being too complicated. There are like 11 books in the 209 series.

 

[doghead]

Deciphering TM numbers

TM9-2320-361-10

TM9 = Technical manual for branch 9. Branch 9 is ordnance.

1. Army Air Forces.
2. Cavalry.
3. Chemical Warfare Service.
4. Coast Artillery Corps.
5. Corps of Engineers.
6. Field Artillery.
7. Infantry.
8. Medical Department.
9. Ordnance Department


2320 = wheeled vehicles

361 = series of manual. the higher the number, the newer the book. Sometimes you need to reference an older book if the newer series omitted info. The older books were more detailed.

-10 = level of information.

 

[Beutel]

Here’s the question. Why is the plug left out during normal operation?

M37 owner.

 

[gimpyrobb]

For oil and other crud to exit.

 

[Floridianson]

I still like the ball valve idea.

 

[FloridaAKM]

I left my plugs as received, in the blank holder, not sealing up the clutch assembly.

 

[BEASTMASTER]

I like the wiper knob question ,,,do you pull it out or push it in to turn on the wipers ???????

 

[orren]

I leave mine plugged since I don't relish trying to put plug in when under water. BUT,
I do check it for accumulated oil which has not happened for more than a tablespoon.
If I think it starts to get too much oil in bell housing I will then leave plug out until
leak is fixed.

I left my plugs as received, in the blank holder, not sealing up the clutch assembly.

 

[Floridianson]

The ball valve is the fast and easy way to get ready for fording. Myself I would leave it out as if the truck ever changes hands they might not know about it being installed and trouble will follow.

 

[Keith_J]

Bell housings need venting to relieve pressure differential due to heating during heavy use. Pressure changes can cause rear main seal leakage. Yes, the seal weeps, this is to be expected as a thin film of oil between the journal and the lip prevents wear. Positive pressure in the bell housing can force abrasive debris under the lip which causes wear of both.

When fording, heating of the bell housing air is limited as water tends to cool the bell housing faster than the clutch and engine can heat it. So leave the plug out unless in water. The ball valve idea is a good one.

 

[Screamin T]

What is missing in this pic


While crawling underneath my Duece, I discovered the missing plug/inspection port/thingamajig in the pic, the hole is threaded so it is definitely missing something. I have been driving around a year with out it, no massive leaks, no change in performance. But now that I have found it I am a little nervous driving my favorite ride around town and all over central Texas. Any info would be appreciated, especially where I can locate a replacement part.

 

[Elijah95]

See the plug right next to it? When you’re going water fording, move the plug over and thread it into the hole; don’t forget to remove it shortly after though!

 

[Evil Dr. Porkchop]

See the plug right next to it? When you’re going water fording, move the plug over and thread it into the hole; don’t forget to remove it shortly after though!

Nothing is missing.

 

[porkysplace]

Some good reading for you.
TM9-2320-209-10-1.pdf
TM9-2320-209-10-1 Operation, Installation and Reference data for the M35 series, Operator Level.

[h=1]TM's for the Deuce[/h]

 

[marchplumber]

Welcome aboard!! You aren't the first and most definitely won't be the last to notice the "missing plug".......................Above info is most accurate. Good eye though. LOL Have a great day and a Wonderful Christmas!!

 

[BEASTMASTER]

there is no stupid question if some knowledge is learned from the answer.

 

[Slate]

So if I have engine oil leaking out of this open plug hole should that be the rear main I need to replace? And which TM should I read to help?

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