Transfer Cases, The Basics
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Posting Guru
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From: Peterborough, Ontario
Transfer Cases, The Basics
Okay guys, help me out on this one. I've drove 4wd lots over the years, but never wrenched on it. I know there were some different transfer cases in these trucks, but have no clue as to how to identify them, what sort of maintenance they require or anything like that.
I'm hoping we can put together a thread that tells what cases were used, how to identify them, what maintenance issues they have and require etc. I know some use gear lube, others use ATF for example. Would be great to get some pics in here too, and maybe we can even talk about basics of removal and installation etc.
So, tell us what you can about transfer cases!!
I'm hoping we can put together a thread that tells what cases were used, how to identify them, what maintenance issues they have and require etc. I know some use gear lube, others use ATF for example. Would be great to get some pics in here too, and maybe we can even talk about basics of removal and installation etc.
So, tell us what you can about transfer cases!!
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Joined: Apr 2009
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From: Malahat/Cowichan Valley
Wow so where to begin. First:
Borg Warner 1345's and 1356's most common.
My Exp is with the 1356 as its in mine. in HERE is my album with all the parts and exploded views of both. includes most part numbers. To see the identification look below and left of the electric shift or the area where it would be if yours is manual(rear of case as it is installed), you will see the borg warner logo and then to the left of that is the number. The first four are the model.
Removal and reinstallation is a snap. Six bolts to pull it. The holding pin will keep it there so it is easy to put back in. It weighs a bit but nothing that you wont be able to handle. Has a paper gasket that is cheap from ford. Make sure you have a jack with a 2x4 frame to support it if you cant lift it. that will save you a lot of time with balance.
Fluid is ATF, Anything that has the dex/merc III/IV or equivalent. Not type F or the new stuff for the new trucks. capacities below:
NP 2-speed part-time - 6 to 6.5 pints
Borg Warner 13-45 Full-time - 6 to 6.5 pints
Borg Warner 13-56 manual and electronic shift - 2 US quarts
Borg Warner 13-56 with PTO - 6.1 US quarts
(not 100% but these should be damn close)
I have the entire re/re proceedure out of the book scan i got from Peter if anyone needs it, just pm me.
This just scratches the surface but you get the idea. I'll post links to sites tonight.
Borg Warner 1345's and 1356's most common.
My Exp is with the 1356 as its in mine. in HERE is my album with all the parts and exploded views of both. includes most part numbers. To see the identification look below and left of the electric shift or the area where it would be if yours is manual(rear of case as it is installed), you will see the borg warner logo and then to the left of that is the number. The first four are the model.
Removal and reinstallation is a snap. Six bolts to pull it. The holding pin will keep it there so it is easy to put back in. It weighs a bit but nothing that you wont be able to handle. Has a paper gasket that is cheap from ford. Make sure you have a jack with a 2x4 frame to support it if you cant lift it. that will save you a lot of time with balance.
Fluid is ATF, Anything that has the dex/merc III/IV or equivalent. Not type F or the new stuff for the new trucks. capacities below:
NP 2-speed part-time - 6 to 6.5 pints
Borg Warner 13-45 Full-time - 6 to 6.5 pints
Borg Warner 13-56 manual and electronic shift - 2 US quarts
Borg Warner 13-56 with PTO - 6.1 US quarts
(not 100% but these should be damn close)
I have the entire re/re proceedure out of the book scan i got from Peter if anyone needs it, just pm me.
This just scratches the surface but you get the idea. I'll post links to sites tonight.
Posting Guru
Joined: Mar 2010
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From: Upstate NY
I think my xfer case is leaking very small drops of oil, it must be the seal near where that yoke connects to that ujoint on the front driveshaft, every morning I see one drop of oil right underneath it and find a little bit on the u joint
Posting Guru
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From: Upstate NY
also the transfer case if only activated or having any use when 4x4 is activated? correct? so when Its in 2wd the xfer case serves no purpose? or does it? the rear driveshaft does not go into the transmission it goes into the xfer case, or so it seems?
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Posting Guru
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From: Peterborough, Ontario
Some of the basics I can help you with on that question, in 2high, power goes straight through the transfer case to the rear drive shaft at a 1:1 ratio. In 4 high, again, a 1:1 ratio, but both rear and front shafts are powered. In 4 low, there is a reduction, that then supplies both shafts, the reduction ration I don't know, and suspect it is different for different transfer cases.
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Posting Guru
Joined: Mar 2010
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From: Upstate NY
Some of the basics I can help you with on that question, in 2high, power goes straight through the transfer case to the rear drive shaft at a 1:1 ratio. In 4 high, again, a 1:1 ratio, but both rear and front shafts are powered. In 4 low, there is a reduction, that then supplies both shafts, the reduction ration I don't know, and suspect it is different for different transfer cases.
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Posting Guru
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From: Peterborough, Ontario
Quick question, I know the tranny would have to be changed, but would swapping a 4wd tranny and transfer case (and rear driveshaft) into a 2wd truck cause any issues? I'm thinking of an intermediate step in a 2wd to 4wd conversion, and having the lower range would be nice for close quarters work and the like.
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Posting Guru
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From: Peterborough, Ontario
Thought of another question relating to these boxes.... I know the bellhousing bolt pattern is different for diesel versus gas, but I thinking/guessing that transfer cases would fit either gas or diesel trannies?
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Jason
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