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1994 K3500 5 speed with PTO plates Where to check the transfer case oil level?

J

jrsavoie

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1994 K3500 5 speed with PTO plates Where to check the transfer case oil level?

Does the transfer case fill with the transmission?

I had an older truck like that many moons ago.

I can find no level plug on the transfer case.

I also seem to have a leak on the transmission. Are there any likely spots to check?
The oil seems to be comoing from the top of the transmission
 
Transfer case fill/check plugs are generally on the back side near the center of the housing. The transfer case and transmission only share oil if the seals are out :). Can you ID what transfer case you have? I think the Borg Warner unit has a different recommended oil than the NP/NVG ones.
 
IDK if it was all 3500 4wds, or duallys over 10K gross, but some, if not all 3500s had a Borg Warner t-case. also, if there is a leak coming from above, pull your shifter boot and check for a broke off ear, if guys get super mean with the shifter, the shifter stub mounting plate breaks a ear. we had one broken on dads 98.

good luck!
 
If it has pto it's a borg-warner case.I don't believe the np cases could have pto. Owner's manual says fill to the height of the fill plug.
 
94 K3500's used the BW cases. Look on the back side you will see 2 plugs fairly close together. One is at the bottom and the other 1/4 the way up. They take 1/2 inch ratchet if you are lucky, if not breaker bar. Do yourself a big Favor and remember to use Never Seize before you replace.
 
Thanks. It is the same as one of my other vehicles. I can't believe I never saw the fill plug even though I was looking in the right spot.
I didn't have the truck jacked up at all and it was a little tight for room. That's my story.

I use teflon tape and non-hardening pipe dope on plugs.
 
I use to use Teflon myself untill I found out that it can allow rust through it and with higher temps it also breaks down. If you are gonna use it be sure to get the teflon thats rated for gas not the regular white stuff for water
 
Don't want to start an arguement here but the white teflon tape is for oil as well as water. We use it on hydraulic fittings on our equipment and have for 25+ years.
 
for hyadraulic stuff at my oil drilling rig we use the loc-tite thread dope because the tape has a habit of going through the pumps,clogging the filters and plugging small orifices if it gets into the system.the thread goop disolves into the oil and doesn't seem to harm anything.
just thought i'd throw that in here,lol

Mark
 
There is actually a Teflon specific for oil / gas and wont breakdown whereas the usual white stuff is rated only for water. You may have used it for 25+ years as many of us have teh two major problems is that if you get any gas, diesel or even oils it will start to breakdown. That and the fact it will transfer rust through it can lead to problems later. I am not saying it always will but it is far more likely to than the Teflon rated for gas and oil. As Mark said to Teflon will come apart inside the unit and can lead to plugged pumps, oraifices and that scares teh crap outa me in itself.
 
Well to tell you the truth, we're probably using the right type but I haven't paid attention to that (but I will). As to getting it in pumps and valves, it's in the technique of using it. I'm not talking about a few fittings here and there over the years, I'm talking about thousands of machines with sophisticated hydraulic systems and yeah, tape pieces in the system can really play hell on it. That's what I mean about technique.
 
yeah,i've been doing the riggin thing for 21 years now and it wasn't till i got this new 8 million dollar rig to run about 5 years ago that the guy that designed the haydraulics for it told me about the tape peices getting into the system.

was kind of an eye opener what he had to say about it.

changed my way of thinking for sure.
 
Another problem with Teflon and while most will never encounter such a issue is that the more you complete wraps you make the thicker it becomes. This doesnt sound like an issue untill you start considering high pressure systems when with to many wraps you actually decrease the shear value between the two objects. This of course can lead to a joint actually bursting out and in teh case of hot oil that can be real dangerous.

I worked for a number of years overseas doing HSSE and have seen it happen many times. Then again some of the things I have seen make death look appealing...lol
 
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