Transfer case fluid/Power steering fluid
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Tuned
Joined: Apr 2013
Posts: 498
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From: Sweden
Transfer case fluid/Power steering fluid
Hi!
I am new to this 73-79 forum. I bought a project truck yesterday and have some questions. It's a F150 4X4 1977 with 400cui+C6. I checked fluids today but I cant find information about my transfer case (full time 4x4) or power steering in the owners manual. (full time 4x4) Can I use ATF Mercon
in both? Thanks!!!
I am new to this 73-79 forum. I bought a project truck yesterday and have some questions. It's a F150 4X4 1977 with 400cui+C6. I checked fluids today but I cant find information about my transfer case (full time 4x4) or power steering in the owners manual. (full time 4x4) Can I use ATF Mercon
in both? Thanks!!!
Postmaster
Joined: Nov 2011
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The power steering can take ATF or dedicated power steering fluid from the parts store (NAPA ect.). The normal ATF for a '77 would be Dex-Merc I believe.
There is some debate about whether PS fluid or ATF is better in the steering but both seem to work OK. One of my classics runs ATF in the steering and the other PS fluid and both work fine.
As far as the full time transfer case, don't know.
There is some debate about whether PS fluid or ATF is better in the steering but both seem to work OK. One of my classics runs ATF in the steering and the other PS fluid and both work fine.
As far as the full time transfer case, don't know.
Moderator & parts slinger
Joined: Feb 2007
Posts: 50,186
Likes: 5,792
From: S/W Missouri, Polk county
Full time transfer case, meaning NP-203? Use a light weight 10w30 or 40 motor oil.
NP203 Transfer Case Specs
http://www.off-road.com/trucks-4x4/t...ech-20599.html
80/90 gear lube is too thick, unless you have a NP-205 then 80/90.
NP203 Transfer Case Specs
http://www.off-road.com/trucks-4x4/t...ech-20599.html
80/90 gear lube is too thick, unless you have a NP-205 then 80/90.
Thread Starter
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Tuned
Joined: Apr 2013
Posts: 498
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From: Sweden
Thanks a lot, guys!! Appreciate it a lot ! ! !
Yes, what I understand it's the NP203 and not the more desirable NP205.
I'm glad I am asked because I was thinking of using ATF.
I would like to change the oil and not only fill up but cant find a drain plug.
Do I have to pump the oil out? I hope you understand most of my English.
Yes, what I understand it's the NP203 and not the more desirable NP205.
I'm glad I am asked because I was thinking of using ATF.
I would like to change the oil and not only fill up but cant find a drain plug.
Do I have to pump the oil out? I hope you understand most of my English.
Moderator & parts slinger
Joined: Feb 2007
Posts: 50,186
Likes: 5,792
From: S/W Missouri, Polk county
Look on the front of the xfer case for a blue/silver tag to confirm what you have, before you go adding fluid.
NP-205 drain and fill plugs are on the dvrs side/back side of the xfer case.. One high,one low....
NP-203 ?? I do not know, I have never owned one.
NP='s New Process
See the difference, NP-203 has the bigger tail end.
NP-205 drain and fill plugs are on the dvrs side/back side of the xfer case.. One high,one low....
NP-203 ?? I do not know, I have never owned one.
NP='s New Process
See the difference, NP-203 has the bigger tail end.
Thread Starter
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Tuned
Joined: Apr 2013
Posts: 498
Likes: 53
From: Sweden
Thanks a lot! Great with Pictures. I am going to check this out tomorrow just to be sure. The truck have full time 4x4 and the shifter and owners manual says you can only shift between high and high/lock and between low and low/lock. Unfortunately I dont know a lot about the history of the truck so I dont know what could have been replaced earlier.
/Mats
/Mats
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Moderator & parts slinger
Joined: Feb 2007
Posts: 50,186
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From: S/W Missouri, Polk county
A pic is easier than typing a bunch of stuff. What does you xfer case **** look like? 203 on the left, 205 on the right.
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Tuned
Joined: Apr 2013
Posts: 498
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From: Sweden
It's more like the **** to the left but probably another year. I tried hard to
post a Picture (size 38kB) but without any success.
Posted it here on photobucket too. /Mats
Shift /Transfer Case Photo by bulans_album | Photobucket
post a Picture (size 38kB) but without any success.
Posted it here on photobucket too. /Mats
Shift /Transfer Case Photo by bulans_album | Photobucket
Thread Starter
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Tuned
Joined: Apr 2013
Posts: 498
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From: Sweden
Thanks for all advises about the fluids. Transfer Case had no drain plug.
I had to use a lower bolt hole in the rear. I used 10w-30 as you suggested /Mats
DSCN2170_zpsgeeyhgrc.jpg Photo by bulans_album | Photobucket
I had to use a lower bolt hole in the rear. I used 10w-30 as you suggested /Mats
DSCN2170_zpsgeeyhgrc.jpg Photo by bulans_album | Photobucket
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