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Re: Grandpa’s M37

Posted: Sun Jul 03, 2022 1:30 am
by NAM VET
Little by little, and looks great. keep it up. hal

Re: Grandpa’s M37

Posted: Sun Jul 03, 2022 9:25 pm
by Cal_Gary
Excellent work Greeno!
Gary

Re: Grandpa’s M37

Posted: Mon Jul 04, 2022 5:50 am
by greeno
Changed the selector shaft seal this am. Thanks PoW that worked great. I don’t think this is a permanent fix, as there is a small pit in the shaft. Hope this will get me to winter.
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Re: Grandpa’s M37

Posted: Sat Jul 09, 2022 2:22 am
by Argie1978
Keep it up, man. This is going great.

Re: Grandpa’s M37

Posted: Mon Jul 11, 2022 6:12 pm
by greeno
Well, so much for the parade Sunday. Blew the frost plug behind the starter. Grrrr. Hope I didn’t wreck it.

Re: Grandpa’s M37

Posted: Thu Aug 11, 2022 4:49 am
by greeno
after another frost plug popped out last night I’m in quite a state. I paid good money for a supposedly professional rebuild by a shop with 230 experience.
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Re: Grandpa’s M37

Posted: Thu Aug 11, 2022 6:01 am
by Argie1978
What a pain. I don't know if taking the truck to the shop to claim will be a burden for you.
One thing you can do, before tapping them back, is to apply Indian Head compound. That will help on the sealing. It's widely used here at the marina where I live.

Sebastian

Re: Grandpa’s M37

Posted: Thu Aug 11, 2022 6:14 am
by PoW
They didn't do a good job with those. The worst one is in the rear of the block, inside the bell housing.

Hope it never leaks... :shock:

BTW, they are called core plugs, nothing to do with freezing engines. The factory places them to ease the removal of the sand fill after casting the iron. The steel wire you occasionally find in an engine block is from the armature used to hold the damp sand together and in place before filling the mold with molten iron.

I've seen many engines ruined by freezing, with every plug in place just fine.

PoW

Re: Grandpa’s M37

Posted: Thu Aug 11, 2022 9:13 pm
by Cal_Gary
Tough situation and I would hold the shop accountable for the repairs.
I learned about those plugs myself a couple of years ago, not properly staking them then lost one with 2 brand new gallons of coolant all over the street.
Lesson learned.
Gary

Re: Grandpa’s M37

Posted: Wed Aug 17, 2022 9:27 am
by greeno
i've had some 'discussions' with the offending shop. they're too far to drive to, and i don't have a towing setup for this beast.

I am back on the road, albeit with much trepidation.

One thing i'm noticing, now that i got it to idle good at 600rpm, is that coming out of idle there is a 'dead spot'. The idle air screw adjustments are not helping. Any insight gang?

Re: Grandpa’s M37

Posted: Wed Aug 17, 2022 9:08 pm
by Cal_Gary
I'd make sure your carb bolts and the mount nuts are tight, not sucking pinhole air from an unknown spot. I'd also apply a little bit of choke then accelerate to see if the bog disappears. My civvy carb had this issue and I never solved it; however, once I installed the rebuilt ETW1 from Midwest Military the bog disappeared and the engine ran like a champ, to this day.
Gary

Re: Grandpa’s M37

Posted: Tue Nov 01, 2022 10:55 am
by greeno
Took the kids trick or treating last night. For fun I put it in low, left it in idle, and took a video. Mostly to capture the transfer case noise. At the end you can hear me engage the clutch, put it into neutral, then disengage to hear the transmission shaft turn. No idea if this is normal.
https://youtu.be/p43c0gHPF1s

Re: Grandpa’s M37

Posted: Thu Jan 12, 2023 5:20 pm
by greeno
Back at it today…took a break to do some house projects. Door seals and other bits and bobs are on the agenda. I’m very lucky to have Midwest so close!

Re: Grandpa’s M37

Posted: Thu Jan 12, 2023 6:25 pm
by m-37Bruce
That could be a good thing, being close to John’s shop could be a a good thing.

Re: Grandpa’s M37

Posted: Sat Jan 28, 2023 3:21 pm
by greeno
Test fitting window seals before I paint the uprights.
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