Bent clutch rod?

1959 - 1978, M151, M151A1, M151A2, Technical questions and discussions, regarding anything related to the M151.
Rickf
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Re: Bent clutch rod?

Post by Rickf » Tue Sep 26, 2017 4:46 am

I have lucked out and I have also fought for an hour with them. I have also left the pressure plate bolts just loose enough for the disc to be able to move a little so the transmission can move around and find the hole but you have to know what you are doing if you do it that way or you can destroy both the pilot bearing and the input bearing on the transmission. It is best to get the clutch disc aligned as best you can before starting. My favorite tool is a 1/2" drive extension and electrical tape. Tape the end to fit the bearing and then tape the section that goes through the disc for a snug fit on the disc and shove it all in. Measure the distance from the side of the extension to the pressure plate all around for good measure and tighten it down.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone


steveperryman
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Re: Bent clutch rod?

Post by steveperryman » Tue Sep 26, 2017 4:12 pm

Here are photos of the back of the clutch. There's oil around the seal, as you can see, but the motors been turned on its side a few times...

Is it worth it to just change the rear seat some l since I'm in here?

https://photos.app.goo.gl/ggynSfDLVQsNXocx1

Steve

Rickf
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Re: Bent clutch rod?

Post by Rickf » Tue Sep 26, 2017 6:01 pm

The rear main seal is not leaking, There may be a little weeping from the oil pan gasket but I would not worry to much about the seal. It is one of those things where you have to decide how much you want to do. If you pull the flywheel to do the rear main even though it is not leaking then do you want to do the oil pan gasket since it is a little wet? Well, man, I have the oil pan off, should I check the bearings? See where it is heading? :lol: Did you get the clutch out yet? How does it look?
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

steveperryman
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Re: Bent clutch rod?

Post by steveperryman » Wed Sep 27, 2017 10:17 am

Ok, I'll leave the seal alone... Here are photos of the clutch, looks worn down to me, what are your thoughts?

Steve

https://photos.app.goo.gl/RVO3bkGDEAUcWrHm2

Rickf
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Re: Bent clutch rod?

Post by Rickf » Wed Sep 27, 2017 3:09 pm

There are many miles left on that clutch, Do NOT blow that off, spray it and the flywheel down with brake cleaner. If that is an original clutch disc then it is asbestos and you do not want to snort that dust under any circumstances! If you have a DA sander you can hit that flywheel with around 120 grit sandpaper and clean off the rust and any glazing and throw it all back together. Hit the pressure plate with the brake cleaner and sander also. Do NOT sand the disc.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

steveperryman
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Re: Bent clutch rod?

Post by steveperryman » Wed Sep 27, 2017 3:17 pm

Thanks Rick... I'll clean it with brake cleaner only and reassemble. There wear a gasket between the bell and the block. Is that necessary? I'll get it if necessary...


Steve

Rickf
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Re: Bent clutch rod?

Post by Rickf » Wed Sep 27, 2017 4:00 pm

Not really necessary, it is there to keep water out when fording. as long as you are not going under water. You want to sand the flywheel and pressure plate to remove the glaze and that in turn will help break in the clutch again. You might also want to check that pilot bearing, I am pretty sure it is supposed to be a roller bearing. Looks like it is gone or the wrong one.

Have you taken the top off of the transmission that will not shift? could be nothing more than the shifter is jammed between gears.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

steveperryman
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Re: Bent clutch rod?

Post by steveperryman » Sun Oct 15, 2017 6:14 pm

Ok, I've made progress... Old powerpack out, new one in. Clutch seemed to work when my kids push the mutt and I engage and disengage the clutch, so that's a big plus.

When I run the motor, I get a consistent backfire out of the carb, it seems like it backfires everytime cylinder number 2 is opening it's intake valve... When I looked carefully, this is what the top of the intake valve looks like.

https://photos.app.goo.gl/MoQ9jw6l4Wk7QxlJ2

I am leaving it overnight with that spring compressed, maybe this is normal, but it looks rusted..

Steve

Rickf
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Re: Bent clutch rod?

Post by Rickf » Mon Oct 16, 2017 6:32 am

That looks like an exhaust valve. The keepers look like they had water on them and are rusty and there appears to be something like water or welding flash on everything. Hard to tell from the picture. Also looks like the valve adjustment is screwed down pretty far, did you check the valve clearances?
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

Rickf
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Posts: 5909
Joined: Sun Mar 19, 2006 10:04 am
Location: Pemberton, New Jersey

Re: Bent clutch rod?

Post by Rickf » Mon Oct 16, 2017 6:33 am

Can you show a pic of the whole valve train?
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

steveperryman
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Re: Bent clutch rod?

Post by steveperryman » Mon Oct 16, 2017 6:39 am

I played with it this morning and noticed the exhaust valve wasn't moving at all. The backfire, I think, was the compression escaping out of the intake, as the exhaust valve never opened.

Turns out the exhaust pushrod was never property placed on the crank and had slipped down the side, after a few attempts to dislodge it, it popped out, I managed to find the groove for the bottom of the pushrod and reassembled it. I hand cranked the motor and rechecked valve clearances, set them to 16 as it's cold. I then checked compression, I'm at 110, 100,100,115

I'm going to fire it up tonight I think the stars are aligned!

Steve

Rickf
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Re: Bent clutch rod?

Post by Rickf » Mon Oct 16, 2017 6:43 am

Pushrods popping out is a common occurrence with these engines after they have sat for a while. Usually I tap on the top of the valve with a soft hammer a few times to work it loose and then put the rod back in and adjust. Those rusty valve keepers might give you a bit of concern down the road if they are really rusty and degraded in the grooves. Or they may just clean up and you will never know the difference.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

steveperryman
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Posts: 123
Joined: Sun May 14, 2017 3:06 am
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Re: Bent clutch rod?

Post by steveperryman » Mon Oct 16, 2017 8:31 am

The head was spotless until I left it under a tarp for a month outdoors. I think it's surface rust and I think and hope it will shake right off once the motor gets warmed up and run for a bit.

steveperryman
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Re: Bent clutch rod?

Post by steveperryman » Tue Oct 17, 2017 4:24 pm

Hey Rick,. I've got a heck of a leak from The back of the tranny, there are 3 bolts holding on the part of the tranny (or transfer case) that has the rear seal in the center.

The 3 bolts are like a triangle around the rear seal, if you remove the 3 bolts, the back of the transfer case comes off and you are holding a steel plate with the rear seal in the center.

I hope I am describing this well, I couldn't get a decent picture. The space between the metal plate and the transfer case is leaking all around, 360 deg.

I looked and can't find a gasket for this area, is there a gasket that your aware of? I can try to get a photo of this doesn't make sense...

Thanks,

Steve

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Re: Bent clutch rod?

Post by Surveyor » Tue Oct 17, 2017 4:47 pm

Sounds like you are missing the gasket. See Section II of parts manual 34P, figure 70. About page 176.

http://g838.org/g838_manuals/TM_9-2320-218-34P.pdf
1960 M151 Run #1 (Now runs and stops but still working on it...)


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