4WD Lever

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Jun 11, 2017 | 12:18 PM

N2S3

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4WD Lever

Can I ask for a rough hint, what positions walk the 2WD-4WD lever trough, mine does not have any sign on it.

I assume front is 2High, than neutral (is there a neutral position?),
what comes next, 4High?, then 4Low? then 4Low locked?
Is the DiffLock only working in 4Low?

I have the shop manual for my 77 truck, but can't find a clue for that inside

Sorry for a silly question like this,
Gerhard

Jun 11, 2017 | 12:28 PM

bryanmartin

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From: Puyallup, WA

4L, N, 2H, 4H. That's going front to back. I had to remember it because I replaced the **** on my Bronco with an unmarked billet one. I went back to marked ***** in my pickup.

Jun 11, 2017 | 06:23 PM

77&79F250

Moderator & parts slinger

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From: S/W Missouri, Polk county

Full time 4wd NP-203 (L/H ****) or part time NP-205 xfer (R/H ****) case? Late made 77 with a "married" case, then probably a NP-205... 4L is fwd towards the dash, 4H back to the seat.

Xfer case ID tag is on the front of the case usually covered in grease/oil/dirt/grim.

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Jun 11, 2017 | 11:55 PM

N2S3

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Don't have the truck here, but it has free wheeling Hubs in Front, so I assume its a Part time 4WD.
My Marti Report called it fulltime 4WD instead....
It is a 77 built in the end of 76.
VIN F14HNO64420

Jun 12, 2017 | 10:46 AM

N2S3

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Had a look for details but can't find any tag. Could you give some advice with pics?

The Lever has a print Lock-Low-N-Hi-Lock...

Anyway, what Tc is that?

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Jun 12, 2017 | 10:55 AM

ktm4012

Mountain Pass

Joined: Feb 2016

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From: Southington CT

Quote:

Originally Posted by N2S3

Had a look for details but can't find any tag. Could you give some advice with pics?

The Lever has a print Lock-Low-N-Hi-Lock...

Anyway, what Tc is that?

That's a NP203 in the pics. Full time 4WD

Jun 12, 2017 | 11:02 AM

N2S3

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Ok, but for what reason the PO installed Hubs in front?
Thats make sense if the 4WD is manual shifted, but so the front shaft is driven all the time?

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Jun 13, 2017 | 10:56 AM

77&79F250

Moderator & parts slinger

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From: S/W Missouri, Polk county

And the NP-203 is a chain driven xfer case and sling lubed with oil. NOT 80/90 gear lube oil either. Like 30 weight motor oil.

And you need to put it in 4wd at least once a month and drive it in a NONE hard packed surface. Dirt, gravel, muddy field while doing donuts

...grass like the x-wife's front yard lol. JK

I believe you can get a "part time" kit and put in the NP-203 that goes along with the manual hubs.

NP-203 info. New Process NP203 Transfer Case Specs

NP203 Transfer Case

NP203 New Process Transfer Case Diagrams and Information

VERY GOOD INFO New Process 203 Transfer Case Tech: Off-Road.com

NP203 Transfer Case Rebuild Kits and Parts with Illustration! & parts list. Free technical support! - Drivetrain

https://www.summitracing.com/search/...onversion-kits

Jun 13, 2017 | 11:49 AM

#10

N2S3

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The NP 203 is always in 4WD, so I understand the replies.
So why put it once in a while in 4WD? Or do you recommend to lock the diff? Or Shift to low?
Btw thx for the great input an references!

Jun 13, 2017 | 02:01 PM

#11

jakeharp

Fleet Mechanic

Joined: Aug 2004

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From: Nevada

Np203

The 203 is chain driven and lubricated by oil 'flinging' around by the chain drive, its my understanding that placing it in 4hi and 4low every now and again will help lubricate the transfer case........

Jun 13, 2017 | 02:14 PM

#12

77&79F250

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From: S/W Missouri, Polk county

Yes duh on my part... it is in 4wd all the time. So I meant to say put it in LO LOCK and HI LOCK to help get the lube where it needs to be.

Jun 13, 2017 | 09:15 PM

#13

F-250 WARHORSE

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From: starship enterprise

Yes, 203 full time. According to manual, 203 was only available in auto trans, so yours is probably auto?? 205 part time available in auto or manual. Front hubs are a good idea, if something binds or breaks it can lock the front wheels, not very safe. With lockouts that front diff can absolutely lockup, and wheels still freewheel.