Grandpa’s M37

[NAM VET]

Little by little, and looks great. keep it up. hal

[Cal_Gary]

Excellent work Greeno!
Gary

[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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[Argie1978]

Keep it up, man. This is going great.

[greeno]

Well, so much for the parade Sunday. Blew the frost plug behind the starter. Grrrr. Hope I didn’t wreck it.

[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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[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

[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...

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

[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

[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?

[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

[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

[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!

[m-37Bruce]

That could be a good thing, being close to John’s shop could be a a good thing.

[greeno]

Test fitting window seals before I paint the uprights.

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