Borg Warner 1356 Advice
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Borg Warner 1356 Advice
So I have a 93 f150 with about 200k on it. The guy before me dropped some serious coin in the right places. The motor was rebuilt, the transmission was gone through, new clutch, etc. I don't think anyone got into the tcase. There is a mild leak at the rear output. That yoke also has a little wiggle to it. I have also noticed on downhill grades when I give it just a little throttle, I can hear/feel (who knows) the chain the trying to decide which direction its going to have tension. Also in 4 low, wheels turned (shortbed), it wants to go hoppity hop. What do you guys think? At the least I would like that rear yoke to be tight without leaks. If it needs doing, I would like a fresh chain. Will a new chain fix my hopping problem and will that new chain require new gears with it? Also who decided a transfer case needs an oil pump and WHY? I know lots of questions, I am a curious one. The problem is I can't decide which question I am most curious about and I know you all don't want to see 6 in a row bw1356 posts. THANKS.
Last edited by bb65f1004x4; Jul 4, 2015 at 01:19 AM. Reason: DAMN autocorrect
Fleet Mechanic
Joined: Aug 2005
Posts: 1,277
Likes: 89
From: MD
The "hopping" is normal,unless you were on a very soft surface.
Here's some good info: Rebuild your own transfer case. BW1356 - FSB Forums
Here's some good info: Rebuild your own transfer case. BW1356 - FSB Forums
Fleet Mechanic
Joined: Feb 2007
Posts: 1,652
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From: Mooresville, NC
Those boxes are pretty stout -- I've only managed to disintegrate one over the years (with torque well past what the Ford designers originally envisioned). I'd start by swapping out the ATF with fresh as this is a commonly overlooked maintenance item. (Never use gear oil as the pumps can't handle it).
Postmaster
Joined: Nov 2011
Posts: 3,533
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From: SW Florida
The chain ain't under power unless you have 4H or 4L engaged. Is the noise only in 2wd?
I'd just replace the seal BUT it would be a good thing to pull the case out and do the pump retainer mod on it before that lets go.
And as notes the hoppity hop is normal in 4x4 on pavement. You shouldn't do that or you'll eventually damage something. If whatever you're driving on has enough grip to make the truck hop in turns then you don't need to be in 4x4.
I'd just replace the seal BUT it would be a good thing to pull the case out and do the pump retainer mod on it before that lets go.
And as notes the hoppity hop is normal in 4x4 on pavement. You shouldn't do that or you'll eventually damage something. If whatever you're driving on has enough grip to make the truck hop in turns then you don't need to be in 4x4.
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The chain ain't under power unless you have 4H or 4L engaged. Is the noise only in 2wd?
I'd just replace the seal BUT it would be a good thing to pull the case out and do the pump retainer mod on it before that lets go.
And as notes the hoppity hop is normal in 4x4 on pavement. You shouldn't do that or you'll eventually damage something. If whatever you're driving on has enough grip to make the truck hop in turns then you don't need to be in 4x4.
I'd just replace the seal BUT it would be a good thing to pull the case out and do the pump retainer mod on it before that lets go.
And as notes the hoppity hop is normal in 4x4 on pavement. You shouldn't do that or you'll eventually damage something. If whatever you're driving on has enough grip to make the truck hop in turns then you don't need to be in 4x4.
Post Fiend
Joined: Oct 2003
Posts: 9,176
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From: Western Central NV
The weak points are the shift fork with it plastic tips wearing out or breaking. Also the oil pump mount as noted in an above post. Other than that they are fine. I would do what was mentioned in above posts, service the T-case with fresh ATF & replace the seal, if there is a bunch of slop then you may need a bushing & seal both.
I like in many cases if it isn't broke then don't worry about it. Just a side note I had to replace my 1356 because of both a fork & pump issue. But I bought a good used one for $350 from a wrecking yard & it has given me 30,000 trouble free miles.
I like in many cases if it isn't broke then don't worry about it. Just a side note I had to replace my 1356 because of both a fork & pump issue. But I bought a good used one for $350 from a wrecking yard & it has given me 30,000 trouble free miles.
Mountain Pass
Joined: Oct 2007
Posts: 213
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From: Falls of Rough, KY
Since yours is a 93 you can get any 1356, but my truck was an 88, and it still had the cable speedo. I got a 92-up t-case for $100, and I had to modify the main shaft to accept the speedo gear, and re-use the old cases rear tail shaft cover, as 92-up uses the sensor in the rearend to count pulses. Luckily I have a friend with a machine shop that was able to drill the main shaft for me. I replaced the oil pump, and modified it like the thread on fullsizebronco, more like the lower pic.
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