Hydraulic Jacks - Military and Commercial
- Gordon_M
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Re: Hydraulic Jacks - Military and Commercial
Jacks of that size and rating were supplied with the DUKW. I vaguely remember a special bracket in the engine bay just left of the radiator, but I think there's a plate or swivel missing from the top.
If the jack seems a little small for a DUKW, remember that it was only really supplied to lift one wheel off the ground at a time for changing purposes - not the whole vehicle.
If the jack seems a little small for a DUKW, remember that it was only really supplied to lift one wheel off the ground at a time for changing purposes - not the whole vehicle.
Gordon
1941 Highway Trailer K-38
1944 Iron Fireman T-36 Snow Tractor
1986 Nolan Road/Rail trailer
1941 Highway Trailer K-38
1944 Iron Fireman T-36 Snow Tractor
1986 Nolan Road/Rail trailer
- Wingnutt
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Re: Hydraulic Jacks - Military and Commercial
The cup is definitely missing. Did the DUK have a 3-Ton jack? Except for the filler hole, it looks identical to the 3-Ton Hein-Werner hydraulic jack that Fred shows and describes up-thread, meant for his late war Dodge. With the "[GM]" marking, I was thinking it might've been used on either the 1.5 and 2.5 ton Chevy and Jimmie or both, as Zoob and Quasimodo were saying on the GM Oiler thread. I've PM'd Fred and asked for his assessment. Moving the photos here for convenience.
Before clean-up
After clean-up
Before clean-up
After clean-up
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- Gordon_M
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Re: Hydraulic Jacks - Military and Commercial
I think it was a 3 ton. I have the info somewhere in the DUKW ORD 7-8-9 but it is at the other house. Certainly of a size and configuration that would fit the holder.
Gordon
1941 Highway Trailer K-38
1944 Iron Fireman T-36 Snow Tractor
1986 Nolan Road/Rail trailer
1941 Highway Trailer K-38
1944 Iron Fireman T-36 Snow Tractor
1986 Nolan Road/Rail trailer
- mudbox
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Re: Hydraulic Jacks - Military and Commercial
Can anyone help identify this one?
I picked it up because I could see that OD green under all the layers of gunk but there is no manufacture identification readily apparent to me.
The only markings are MADE IN THE USA, a W and a 2, and the bottom is marked 310-C-1 (maybe...).
Does the 2W mark make this a 2 Ton jack?
Here's some pics.
and the markings
-Jason
I picked it up because I could see that OD green under all the layers of gunk but there is no manufacture identification readily apparent to me.
The only markings are MADE IN THE USA, a W and a 2, and the bottom is marked 310-C-1 (maybe...).
Does the 2W mark make this a 2 Ton jack?
Here's some pics.
and the markings
-Jason
- Wingnutt
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Re: Hydraulic Jacks - Military and Commercial
Highly likely that is a Walker jack, mud, and possible that the 2 is its capacity (tonnage rating). For precedence, Walker (technically, one of their subsidiaries - Ajax) made the late war Willys MB jack, A-12268, a 1-1/2-ton screw jack, and examples of that jack have been found marked with a "W" and a "1-1/2" for the capacity, just as the Willys engineering drawing for A-12268 shows. But, I don't have a record of a 2-ton jack. As far as I know, there was a 1-ton bumper jack (41-J-57), 1-1/2 ton screw jack (41-J-66), and then 3- (41-J-72), 5- (41-J-73), and 7-ton (41-J-73-5) hydraulic jacks. I'll dig a little deeper later.
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- Gordon_M
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Re: Hydraulic Jacks - Military and Commercial
Apparently it did. I got back to the other house for the weekend and looked up the DUKW jack in the ORD-7-8-9, it calls up a 41-J-72, just like the late war Dodge jack. I only have the ORD-7 for the non-floating GMC, so it doesn't have the tool listing, but I'd suggest that the GM on your jack means it would be correct for any GM product calling up a 41-J-72. Certainly the DUKW, and probably the CCKW and a range of other stuff too.Wingnutt wrote:The cup is definitely missing. Did the DUKW have a 3-Ton jack? Except for the filler hole, it looks identical to the 3-Ton Hein-Werner hydraulic jack that Fred shows and describes up-thread, meant for his late war Dodge. With the "[GM]" marking....
After clean-up
The 'new' hydraulic jack for the late Dodge makes a bit more sense now. They didn't want to introduce new jacks and procurement orders into the supply chain, they wanted to reduce the number of jack variants they were already procuring, so they looked at the DUKW / GMC jack and said something like; 'that would do for the new 6x6 Dodge - just standardise it for all of them and bump the procurement order quantity'
Gordon
1941 Highway Trailer K-38
1944 Iron Fireman T-36 Snow Tractor
1986 Nolan Road/Rail trailer
1941 Highway Trailer K-38
1944 Iron Fireman T-36 Snow Tractor
1986 Nolan Road/Rail trailer
- mudbox
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Re: Hydraulic Jacks - Military and Commercial
Thanks, Wingnutt! I took a flyer with it, because I couldn't read anything on it. It does work though, so worst case, it finds a place in the garage.Wingnutt wrote:I'll dig a little deeper later.
-Jason
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Re: Hydraulic Jacks - Military and Commercial
This is not per se to the subject but I have several jacks that don't work, of course they have been setting a long time with no use,so why do they no longer work?
thanks,
mark
thanks,
mark
change user name to mark
- Gordon_M
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Re: Hydraulic Jacks - Military and Commercial
Very few reasons NOT to work;
1. Oil level
2. Check valve
3. Totally blown piston seal
There should be an oil fill point somewhere. Once they have oil in the top should move, at least a little, when you pump it. If it moves and goes back - check valve stuck.
A totally blown seal would just pump oil out - usually at the top, when you fill it and pump it.
1. Oil level
2. Check valve
3. Totally blown piston seal
There should be an oil fill point somewhere. Once they have oil in the top should move, at least a little, when you pump it. If it moves and goes back - check valve stuck.
A totally blown seal would just pump oil out - usually at the top, when you fill it and pump it.
Gordon
1941 Highway Trailer K-38
1944 Iron Fireman T-36 Snow Tractor
1986 Nolan Road/Rail trailer
1941 Highway Trailer K-38
1944 Iron Fireman T-36 Snow Tractor
1986 Nolan Road/Rail trailer
-
- USMC Sergeant
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Re: Hydraulic Jacks - Military and Commercial
Thanks a lot , I'll do what you said
change user name to mark
- lt.luke
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Re: Hydraulic Jacks - Military and Commercial
Can they be rebuilt?Gordon_M wrote:Very few reasons NOT to work;
1. Oil level
2. Check valve
3. Totally blown piston seal
There should be an oil fill point somewhere. Once they have oil in the top should move, at least a little, when you pump it. If it moves and goes back - check valve stuck.
A totally blown seal would just pump oil out - usually at the top, when you fill it and pump it.
Luke Sparks
MAJ (R), USA
GPW 12078 http://g503.com/forums/viewtopic.php?f=95&t=102532
https://www.homesteadersfinest.com/
MAJ (R), USA
GPW 12078 http://g503.com/forums/viewtopic.php?f=95&t=102532
https://www.homesteadersfinest.com/
- Gordon_M
- G-Colonel
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- Location: central and north east Scotland, depending on the day
Re: Hydraulic Jacks - Military and Commercial
I never have but I'm told seal packs are available for most of the common brands.
Gordon
1941 Highway Trailer K-38
1944 Iron Fireman T-36 Snow Tractor
1986 Nolan Road/Rail trailer
1941 Highway Trailer K-38
1944 Iron Fireman T-36 Snow Tractor
1986 Nolan Road/Rail trailer
-
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Re: Hydraulic Jacks - Military and Commercial
I have/had NOS jacks (straight out of WW2 crates packed in sawdust to absorb oil) and they are this Kelly Green colour.Its color is similar to Kelly green and is not olive drab, so I believe it is a civilian jack and not a military jack
Another thing I just recalled in these crates there was a distinctly conical ASM Hydraulic jack of I think 3 tons capacity in olive drab with decals _ I never have worked out what they were for - anyone know. They were like this in shape (this is a D708) but can't say this is an exact match though:
https://i.ebayimg.com/thumbs/images/g/t ... s-l225.jpg
Happy days of ww2 surplus just about all gone now
- Silly's MB
- G-Brigadier General
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Re: Hydraulic Jacks - Military and Commercial
I picked up this Jack today which I think is a Heine-werner, but is it correct for ww2 vintage?
I am looking for a 7 ton for the 2nd echelon set 2 and this appears to be an 8 ton so slightly over spec.
I am looking for a 7 ton for the 2nd echelon set 2 and this appears to be an 8 ton so slightly over spec.
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1942 August Willys MB
Complete MVMTS 100% sourced in the ETO
Empty vessels make the most noise .......
1942 August Willys MB
Complete MVMTS 100% sourced in the ETO
Empty vessels make the most noise .......
- Hartofoak
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Re: Hydraulic Jacks - Military and Commercial
I wonder who won this Walker hydraulic jack recently at auction?
https://www.ebay.co.uk/itm/WALKER-VEHIC ... 1438.l2649
https://www.ebay.co.uk/itm/WALKER-VEHIC ... 1438.l2649
MB 298781 DoD: est. 01-19-44 (ex British Army 1958)
T1 Trailer: "Transportation Equipment Co."
MVMTS toolboxes & tools
T1 Trailer: "Transportation Equipment Co."
MVMTS toolboxes & tools
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