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Old 11-18-2018, 05:58 AM   #1
Peter frost
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Default Transfer case fluid change?

Going to change all drive Train fluids today.
What weight should be used for transfer case, differentials and knuckles
I live in PHX
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Old 11-18-2018, 07:57 AM   #2
int77345
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Default Re: Transfer case fluid change?

i always use this SWEPCO 80W-140W and you can use that for both transfer case and differential .

if you dont have that fluid and are doing this today, get a good GL5 rated 75-140 for the differential

not sure on the Transfer case or the knuckles.
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Old 11-18-2018, 02:25 PM   #3
DF Sales&Marketing
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Default Re: Transfer case fluid change?

IHPA stocks the SWEPCO 210-80W140 Gear Oil in gallon containers and soon quart containers.

Keep in mind that not all GL-5 lubricants have yellow metal compatibility, but the entire SWEPCO line of gear oils do.

Go to Parts, then Lubricants to find this and all the SWEPCO products Jeff uses in their shop as well as making them available to customers on line.

IHPA pricing is competitive with others, and you know you are getting it from a friendly company to do business with and who specializes in IH vehicles.
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Old 11-18-2018, 08:18 PM   #4
Peter frost
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Default Re: Transfer case fluid change?

Thanks all done with the gear oil change
Was low on both differentials and transfer case
Running smoother now
When engaging 4 wheel drive on my 1967 1100b 304
The level feels as if Iím engaged in 4 wheel high but when I release the clutch in second gear no movement
Pull the level back further and low 4 wheel drive is engage
Release the clutch and the truck moves smooth thru all gears with a top speed around 20-30 mph
Linkages on the transfer case appears normal and functioning as it should.
Thoughts on why i canít engage the 4 wheel high?
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Old 11-19-2018, 05:58 AM   #5
int77345
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Default Re: Transfer case fluid change?

releasing the clutch and no movement --something must be in natural either transmission or transfer case probably transfer case

a top speed of 30MPH--- is your shift knob or shift pattern miss labeled ? sounds like you are in low range and not high range
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Old 11-19-2018, 08:04 AM   #6
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Default Re: Transfer case fluid change?

Oops, never mind, this diagram is for a D20
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Last edited by Hondo; 11-20-2018 at 05:59 AM..
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Old 11-19-2018, 11:51 AM   #7
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Default Re: Transfer case fluid change?

Referencing the 1967 Model 1100 4x4 in your post: you should have a NP-202 transfer case.
Shift pattern is attached........
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Old 11-22-2018, 06:21 PM   #8
Peter frost
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Default Re: Transfer case fluid change?

Correct with the 4 x4 lever pulled fully back towards the bench seat Iím in 4wheel low
The lever pattern is a youíve posted in the second photo, full forward towards the engine 2 w high , then 4wheel high and 4wheel low.
Iíve seen how the transfer case engages through all the options
Canít understand why it skips the middle option but is fine in the final option...makes no sense cause itís good in 4wheel low
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