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1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

1951 F5 Marmon-Herrington

 
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Old 02-03-2016, 10:54 PM
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1951 F5 Marmon-Herrington

Making progress on the 1951 F5 M-H project. It has a Cotta transmission between the Ford transmission and the transfer case. Apparently, it moved a lot of snow back in the day. I am interested in returning it to original M-H AWD condition. I have not been able to find a diagram of the chassis for a R5-4 M-H. Any help would be appreciated.
 
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Old 02-03-2016, 11:58 PM
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That's my 51 F5 M-H I'm working on (minus the yoke out between the trans and aux). Send me a pm with your e-mail address, and I'll send you the PDFs I got from Marmon.
 
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Old 02-04-2016, 03:15 AM
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Here's mine, which is an F-3 but has the same mid-frame layout of the transfer case as does an F-5. I'll see if I can also get a good photo of the R5-4 chassis diagram to post. Getting CaptPayne's pdf will I suspect give you the whole manual, am I correct CaptPayne? Stu



Maybe this will help too. Stu

 
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Old 02-04-2016, 09:11 AM
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Stu, yeah it's the manual, and that lubrication chart is the best chassis diagram I can think of.
Looks like another without the MH PTO... Dang
 
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Old 02-04-2016, 09:26 AM
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Yeah, I've never seen one of the transfer case PTOs. Josh has one on his F-2 M-H, so maybe he'll post a picture. Owen (1952henry) told me a story years ago of finding a M-H with a PTO in an Oregon yard. It was on a big truck and he didn't think at the time it was right for his truck. But we now know from Chuck and the manuals that all of the F-2 / R32-4s through the "V" series F-6s used the same Fuller or Wisconsin transfer cases. That yard PTO could have been golden. Stu

Edit - here's the transfer case from the other side showing the big mounting location. The PTO must be huge. Stu

 
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Old 02-04-2016, 03:59 PM
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The yard was out west and the truck was an f800. Been a few years but when I last checked most of the larger, older trucks were gone. Imagine it is part of several turdotas or crapsuns now.
 
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Old 02-04-2016, 04:14 PM
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I didn't remember it being an F-800. Probably not the same transfer case I guess. Maybe a little less than golden. Stu
 
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Old 02-06-2016, 08:00 PM
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Hey Guys, thanks much for the photos and diagram, they were very helpful. We seem to have most of the pieces to the puzzle, and we know where they fit. Since the Cotta transmission is coming out, does anyone have an interest in it? The Stock List is RS-200, Model RS, Serial #72980.
 
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Old 02-07-2016, 09:56 AM
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I am curious about the Cotta transmission. I am interested in the smaller size vintage auxiliary transmissions. How big is this one? Do you know what ratios it has? Can you post more pictures of it and how it is mounted?

Thanks,
Fred
 
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Old 02-07-2016, 11:01 AM
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Chuck has described this as an "under drive" gear box, which I guess would be like a torque multiplier needed to deal with snow removal. What other application would it be suited for? Stu
 
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Old 02-17-2016, 08:13 AM
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Changing gear ratios for hyway speeds

Sorry to bother but I can't seem to pm you for some reason. I am also interested in any marmon herrington info especially driveline related. What are these pdfs you speak of? Mine is a 1940 6x6 ex crash tender ford that I am putting back together. If you could send them to me i would greatly appreciate it. [email protected] or rosscometals.com
Just my two cents but has anybody tried changing/making new gears for the transfer case?
 
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Old 02-17-2016, 08:32 AM
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Every M-H model had a printed Maintenance and Parts Manual. CaptPayne and others have had success getting a pdf version for their model directly from M-H. I've got paper copies for mine and a few related models but have never attempted to get a pdf from M-H. You might contact their Customer Service Dept to see if yours is available. Stu
 
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Old 02-17-2016, 04:36 PM
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Originally Posted by 40fordmarmon6x6 View Post
Sorry to bother but I can't seem to pm you for some reason. I am also interested in any marmon herrington info especially driveline related. What are these pdfs you speak of? Mine is a 1940 6x6 ex crash tender ford that I am putting back together. If you could send them to me i would greatly appreciate it. [email protected] or rosscometals.com
Just my two cents but has anybody tried changing/making new gears for the transfer case?
f

Are you trying for greater top end speed? If so you would have to have the gears made to overdrive rather than direct drive the transfer output. Seems it would be a whole lot less expensive to put in a Brownie with overdrive.
 
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Old 02-17-2016, 05:55 PM
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Brownie? Damn now I'm hungry.

Originally Posted by 1952henry View Post
f

Are you trying for greater top end speed? If so you would have to have the gears made to overdrive rather than direct drive the transfer output. Seems it would be a whole lot less expensive to put in a Brownie with overdrive.
Sorry, you'll have to excuse my ignorance. I am unfamiliar with this brownie you speak of.
 
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Old 02-17-2016, 06:14 PM
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Perhaps Fred Mills will chime in with some specific options. For now, in a nut shell, a "Brownie" was an auxiliary transmission that was mounted aft of the main transmission giving you more gear options. Large ones gave you up to four extra gear choices. Perhaps you have heard of older trucks with 5x3 or 5x4 transmissions. That meant 5 speed main box and 4 speed brownie or auxiliary. They are kind of fun to drive, but a bit more involved than say an 18 speed.

Anyhow with Fred's knowledge on these, he could help you choose a brownie that you could mount between your transmission and transfer case that would provide overdrive. Some new gear box mounts and relocation of others, along with driveshaft modifications would be in order. Still probably cheaper than custom gears in an obsolete transfer case.

Nice find btw. Keep us posted, you have fellow M-H fans here.
 

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