Newbie question
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Freshman User
Joined: May 2008
Posts: 39
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From: ohio
Newbie question
ok so im new to the truck scene so please take it easy on me lol probably not one of the brightest questions ever asked but here goes. just got a project truck 88 f-250 already with a 4 in lift and 36's. I knew it needed some work when I got it no big deal i know what end of the wrench to hold 
Heres the question the rear seal where the driveshaft runs into the transfer case is leaking I know how to pull the drive shaft replaceing the seal seems kinda basic but what kind of oil should I use when I put things back together it a 5 speed manual is there a special transfer case oil I should use or just any heavy weight oil
Also I figure while I'm at it I should probably pull the diff covers off and check the gears and such what kind of grease/ oil should I use there as well like I said dumb Question but something I need to know before I hit the mud in 2 weeks to beat it up before i finish the projectThanks for taking it easy on me
Heres the question the rear seal where the driveshaft runs into the transfer case is leaking I know how to pull the drive shaft replaceing the seal seems kinda basic but what kind of oil should I use when I put things back together it a 5 speed manual is there a special transfer case oil I should use or just any heavy weight oil
Also I figure while I'm at it I should probably pull the diff covers off and check the gears and such what kind of grease/ oil should I use there as well like I said dumb Question but something I need to know before I hit the mud in 2 weeks to beat it up before i finish the projectThanks for taking it easy on me
Post Fiend
Joined: Mar 2005
Posts: 8,542
Likes: 5
From: Louisiana
The transfer case is probably a BW1356 (or something like that), and it takes Automatic transmission fluid (believe Dexron III Mercron), probably about 2 quarts.
The axles should take anything close to 80W90 gear oil... IF you have a limited slip then you'll need friction modifier or a gear oil with the modifier in it.
The axles should take anything close to 80W90 gear oil... IF you have a limited slip then you'll need friction modifier or a gear oil with the modifier in it.
Lead Driver
Joined: May 2000
Posts: 9,236
Likes: 12
From: Senoia, GA
The transfer case is probably a BW1356 (or something like that), and it takes Automatic transmission fluid (believe Dexron III Mercron), probably about 2 quarts.
The axles should take anything close to 80W90 gear oil... IF you have a limited slip then you'll need friction modifier or a gear oil with the modifier in it.
The axles should take anything close to 80W90 gear oil... IF you have a limited slip then you'll need friction modifier or a gear oil with the modifier in it.
sounds like you got a good place to start! this way you will see first hand whats inside and how it all works.
also while you have your rear shaft off check the u-joints and make sure they arent dry or loose! biggest problem offroaders face!
you outta weld up your front diff while you have it apart, that way it will perform better when you go play!
-cutts-
Thread Starter
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Freshman User
Joined: May 2008
Posts: 39
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From: ohio
Thanks for the help. i found the leaking seal while greasing everything up and thanks for the U joint advice I'll probably just change them out now while everything is apart since I'm not sure exactly how much abuse this truck has actually been put thru over the last several years I'm sure alot considering it's set up for mud running Dont really want to blow one the first time thru the pits
Post Fiend
Joined: May 2004
Posts: 5,277
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From: St George, SC I-95
D50TTB and 36s....no not the first time but probably half way through the second.
Good informative well asked question there newb. I only comment because usually we get "I got a truck and its leaking. What do I do?" type questions.
Welcome to the Offroad forum
Good informative well asked question there newb. I only comment because usually we get "I got a truck and its leaking. What do I do?" type questions.
Welcome to the Offroad forum
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Posting Guru
Joined: Mar 2007
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From: conroe tx
Just as an FYI, start looking for a d60 to replace the ttb When it blows.
(Did I just say that?) lol
(Did I just say that?) lol
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Post Fiend
Joined: Jan 2001
Posts: 5,121
Likes: 1
From: Springfield, VA
Does it have a ttb50? He said that it was already set up for mud racing, and it has a 4" lift. It is possible that the PO switched the ttb out somewhere along the lines.
What does the front axle look like? is it the ttb or is it a solid axle?
Oh, and nice, well thought out question!! No reason to be rough on someone that asks detaied questions like that!!! Rep to ya!
What does the front axle look like? is it the ttb or is it a solid axle?
Oh, and nice, well thought out question!! No reason to be rough on someone that asks detaied questions like that!!! Rep to ya!
Thread Starter
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Freshman User
Joined: May 2008
Posts: 39
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From: ohio
There was a D60 sitting in the bed of the truck ( but I was hopeing to find some rockwells before I put the D60 in) along with other misc parts when I brought it home. I figured I would let the old break before replacing this way I have time to go over it since our first mud night starts on the 16th. The guy had to get rid of it because his wife said he was spending to much time and money on the truck, personally I think I would have got rid of the wife before I let the truck go
since it isnt in that bad of shape
since it isnt in that bad of shape
thanks for the offer though