head gasket

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rickf
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Re: head gasket

Unread post by rickf » August 21st, 2014, 6:57 am

I use the #3 both as a lubricant and a sealer on the outside of the seals. The yokes can have a film of oil on them to help the sleeve go on and I have found that using a press tends to go to fast with no feel and sometimes the sleeve will go on crooked. I use a large vise and a piece of 2x4 behind the sleeve. That way I can see and feel what is going on and have full control all the time. I have done it by myself but it helps to have another person to hold everything in place while you get the vice started. If the press is the hand pump type you should be alright but be sure everything is lined up straight and all of your blocking is straight. If it goes crooked it is junk after that. The sleeve, not the yoke.
1964 M151A1
1984 M1008
1967 M416
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12/1952 M100- Departed
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Re: head gasket

Unread post by fowlercal » August 21st, 2014, 10:48 pm

Rick,

Who is the other person you found to hold everything in place?? When I do it, everbody has something else to do.

Cal

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Re: head gasket

Unread post by rickf » August 22nd, 2014, 6:36 am

Same here, I said it is easier with two, never said I could find the other person. I have become very adept at holding many things at once. But when I slip it usually hurts.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

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Re: head gasket

Unread post by mallard » August 22nd, 2014, 5:48 pm

wasn't able to recruit anyone to help with the sleeves but was able to get them on just fine. I will still have to do the sleeve for the emergency brake though. it looks like for the rear output i can just take the flange off then press the bearing out simple enough. for the front, what is the prefered method for getting the old seal out?
1965 M151A1

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Re: head gasket

Unread post by rickf » August 22nd, 2014, 8:14 pm

Two cases of beer followed by a lot of cussing! You are working on it on the floor correct? That gives you access, The best way is a slide hammer type puller with the two bur better three jaw gear puller with the jaws facing out. You really don't slam it just keep tapping it and it will slide out. Otherwise you have to get a pry type seal puller and keep working your way around it and hope it comes out before it comes apart. You have to make sure you do not gouge the housing or you will have a leak around the outside of the seal. You will chase that one for a long time I guarantee.You can try prying with a long, large screwdriver but these seals are very deep so that does not usually work. If it does come apart before coming out you will have to carefully drive one side of the seal in towards the shaft to loosen it up and then you can grab it with vice grips. It is not fun, you will see why I suggested you do it now because it is a lot harder to get to in the vehicle.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

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Re: head gasket

Unread post by mallard » August 22nd, 2014, 10:16 pm

Thanks, it looks like this will be a good time to get a smaller puller and i have a slide hammer so hopfully i can get this going forward soon.

I put the small seal in for the 4x4 shifter and put the perm #3 on the out side and it went in no problem. i however might have a problem. i noticed this steel ring around the rear out put shaft inside the transmission. i could see it and was able to pull it out from the small access cover for the 4x4 linkage. can someone identify this and what kind of problems do i have now??? just when i thought i was going to start putting the trans back togeter :shock: :(

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rickf
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Re: head gasket

Unread post by rickf » August 23rd, 2014, 9:15 am

That was a snap ring and it is not a good sign that it has that dent in it. The do not dent easily. I can't tell you where it came from without getting into the manual and right now I just don't have time. It as an internal snap ring so if I were to guess I would say a bearing retainer in the case.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

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Re: head gasket

Unread post by muttguru » August 23rd, 2014, 11:54 am

mallard wrote: i noticed this steel ring around the rear out put shaft inside the transmission. i could see it and was ble to pull it out from the small access cover for the 4x4 linkage. can someone identify this and what kind of problems do i have now???
Mallard,
here's what you need to do.
1. Download (from this site) TM9-2320-218-34-1 dated Aug 1982.
2. Turn to Section 7, page 7-19.
3. In the diagram, you'll see item 7 is the snap ring.
4. It fits in the groove on the rear output shaft (item 5).
5. You need to replace it with a good one. It holds the spacer against the bearing. Although the bearing is pressed onto the output shaft, it needs the snap ring to prevent the spacer moving and eventually the bearing, too.
6. If you haven't lost the spacer and if the bearing hasn't shifted, you may be able to install a new snap ring without wholesale dismantling.
Ken
Kind regards....
Ken

Always wanted - Details and pictures of M416 Trailer data plates & M151 data plates & body-tags for my research. Thanks!

Contact address - - muttguru@aol.com

Note for 2023..... Ken..."Less Stress - More Exercise!"

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Re: head gasket

Unread post by mallard » August 23rd, 2014, 6:05 pm

Thanks Ken, i just lookecd at the manual and it looks like that is the rear output shaft. I put the retaining ring back where i found it and took a few more pictures.

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also more bad news. i rotated the output shaft on the transmission and it would only rotate in one direction. I did have it in neutral before i took it out. then it stopped moving in either direction :( :( :(
1965 M151A1

mallard
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Re: head gasket

Unread post by mallard » August 23rd, 2014, 10:00 pm

Well I have a theory!!! at least about the locked up transmission! I've been reading throught the manual and walking back and forth to my jeep trying to figure out what could have happened then it it hit me. i may be way off here but it at least makes since to me after a few cold ones so here it goes.

when i removed the 4x4 shifter rod all i did was to take the 2 small c clips off then pull the shaft forward. I did not pull the bolt on the bottom of the transmission with the spring and single ball bearing on top of it (page 7-46 of the -34-1 part nubmers 2,3,4,5). well i looked inside and i don't have the ball bearing anymore. my theory is that when i pulled out the shaft the ball bearing rolled toward the back of the transmission and is now in the gear teeth some where. when it would only only turn 1 direction, as i rotated it i could hear what sounded like a ball bearing rolling around like it was hitting every tooth as it spun but would catch like a pawl when i tried to turn it the other way. so my thought is that it must have fallen perfectly inbetween the gear teeth and is now keeping it from spinning! any thoughts on this would be greatly appreciated!!!

if this is true then i'm back to square 1 and getting the retaining ring fixed.
1965 M151A1

mallard
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Re: head gasket

Unread post by mallard » August 23rd, 2014, 10:31 pm

well i wasn't going to be able to sleep tonight with out spliting the transmission and at least looking. does anybody else see what i see!

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well looks like i'll get to use a few more of the gaskets out of the set. on a side note somebody has had this transmission apart before, no gaket, just red rtv.

so back to square 1
1965 M151A1

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Re: head gasket

Unread post by rickf » August 24th, 2014, 7:30 pm

And a lot of water. That snap ring appears to have a dent the same size as that ball. You are going to have to replace that also but especially find out just where that happened. It takes a lot of force to do that. You also need to find out why and when the snap ring came off, they are not exactly easy to get off with the right tools.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

mallard
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Re: head gasket

Unread post by mallard » August 24th, 2014, 8:31 pm

I think the singele ball bearing just came out of place as i pulled the 4x4 shifter out of place because it has been clicking in and out of 4x4 normal. here is a better angle of the bend and it looks like this is how it might have gotten bent.

Image

i took the top off the transmission to try and get a look inside for the problem and there is more rust. i also noticed where the idler gear and the gear on the countershaft have rubbed against each other.

just from looking down in there the only place where i can see where a retainer might go would be external retaining ring where the red arrow is on the countershaft. but from looking in the TM i didn't see one there.

Image

here is a picture of the rust.

Image
1965 M151A1

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Re: head gasket

Unread post by rickf » August 24th, 2014, 8:50 pm

Mother nature at work. When these things sit for years they get water in them, wonder how? During the day they heat up and expand, including the air inside. At night when it is cool and damp they cool off and pull in the cool moist air through the vent. As things warm up the next day the moisture condenses on the inside of the transmission where the gears and case are above oil level and the water runs down into the oil. Over and over, every day this goes on except in freezing weather. This is why engines and transmission can be rusted solid from sitting. Transmission are especially bad because of the mass of metal in a small area.
Never start an engine that has been sitting for a long time even if the oil looks good. If there is water in there it will be on the bottom of the pan, right where the oil pickup is. The pump will pump water through the engine as well as it will pump oil. Bye bye engine.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

mallard
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Re: head gasket

Unread post by mallard » August 24th, 2014, 9:05 pm

i guess all i can do next is start tearing all of the gears apart to try to find where it is missing? or does anybody have a better suggestion? if this is what i need to do any recomendations on a order to do it in?
1965 M151A1

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