emmado22

It just seems like alot of work when Saturn Surplus has them for $3.50 each instock....

cranetruck

I know Mark, you are practical to the Nth degree, but that takes all the fun out of it, IMHO.
These kind of discussions often lead to new things.

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Bjorn

MEP-018A (needs new generator head)

Avatar: XM757 in OK prepared for 1,000 mile trip home. Part of 6,000 mile journey in 2006.
1968 M49A2C modified with 1960 M756A2 truck bed and 1975 HIAB 765A knuckleboom, exhaust brake, VIC-1 and more.
1969 Ford XM757 8x8, 5-ton Pershing 1A truck tractor...the "improved MV".

"Some things can't be made better, just differently......a lot of things actually"

Recovry4x4

I get them from Gene Patano for $2 ea in lots of 10 or 20. Original GI issue.

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3 Trucks
4 Trailers

This Steel Soldier Honors the Living Memory of David Frankenhauser, 1954-2009.
May you Sail in the Grace of Our Lord, Chaplain!

“The earnest prayer of a righteous person has great power and produces wonderful results.” James 5:16.

Bob H

As a new deuce owner I found this thread informative.
BUt Now I want a picture of this M36C Cdn

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Bob H

44 GPW, 77 M880 & M884, 78 USAF Ambulance, M101A2, 73 M36A2 w/w, 70 Monte Carlo

Miscellaneous M880 Series Parts & Advice
Depot Rebuilt front & rear axles, complete.
parting out rusty 77 M882 & 77 M886

WWW.MMMT.US -- AOD MotorPool MVPA -- Michigan MVPA -- MVPA #23020 Great Lakes MVPA

m16ty

I feel sure if I can find the temper I can cut them out of solid rod and drill two holes in it for less than a $1 a piece.

Willie G

Just a quick safety note: PLEASE remember that doubling or tripling the line magnifies the load on the components and they should be rated accordingly. In other words, a 8,000 lb winch in a double line pull could have 16,000 lbs of force - which would require a snatch block rated for more than that as well as attachment points that exceeded that. I carried clevises and blocks rated for 20,000 lbs for the 9,000 lb winch on my Jeep.

We now return you to your regular progamming.

gringeltaube

For do-it-yourselfers or the ones who can't buy them so cheap or aren't so close by....
I just did some comparative testing with my own creation of a "shear-pin cracker" (pat.pend. ) which actually worked better than expected.......

The OEM pins (including the broken core of my very 1st winch miss-hap...) snapped at about 160 ft-lb. More or less the same torque was needed for a home made one made of brass which I had used for years of "normal winching action" but later replaced when I found it with already some deformation.

Also I have a few larger ones of unknown application...(the M35 uses 0.279" x 2.125" measured inside cotter pin holes, these are 0.329" x 2.25") so I turned one down and it also took 160+ to shear it.

For comparison another "homemade" pin of unknown alloy but at least showing some temper... only resisted 100 foot-pound!

Next step will be trying to find 2024 or 2017 alloy locally and compare different levels of temper.
At least I know now what the goal is....

G.

Attached Images

	shear pin test 002 (Small).jpg (47.7 KB, 95 views)
	shear pin test 001 (Small).jpg (48.3 KB, 100 views)
	shear pin test 006 (Small).jpg (48.8 KB, 104 views)

emmado22

The bigger ones could be from 5 ton winch trucks??????

Wh doesnt someone call Garwood and see what THEY have to say about it??? What would they know, they only built the things.....

Garwood Feller Inc (Garwood Winch Div)
1820 Osborne Rd, Saint Marys, GA 31558-9104
Contact Phone912) 882-4151 URL (web address):
Business Category:Mfg Construction Machinery Mfg Motor Vehicle Parts/Accessories in Saint Marys, GAIndustry (SIC):Construction Machinery and Equipment

Oldgrunt

Does any one out there have the resources or know of someone that could find out what alloy the shear pins are made of. From what I understand there is a special machine something besides a rockwell machine to test softer alloys. If the alloy could be found out making replacement pins or ones that would with stand a little more, would be easy.

m16ty

The pin I tested (which is a surplus pin) was 2024. The temper is what's in question now.