Dexron in manual transfer case and 4wd shifting problems?
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Dexron in manual transfer case and 4wd shifting problems?
When I had my transfer case on my 94 V6 5sp 4runner replaced a couple of weeks ago it seems like the tools at the shop filled it with Dexron. Will this damage the transfer case? I will tell them to change it to the gear oil recommended by Toyota in any case. Also, can this be the reason why I can't shift into 4wd when I am driving now, or is there something else going on in the transfer case?
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I will make them flush and refill. I seem to remember somebody talking about synchros and how their performance is affected by the oil that's in the transmission and/or transfer case. Can the difference between Dexron and gear oil totally mess up how the synchros work in the transfer case?
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OK, after some reading in my repair manual there seems to be some small differences to the transfer case between the AT, the MT and if you have ADD or not. Could it be that they mounted a transfer case from an AT or a non-add vehichle? And is there anyway I can figure this out by serial numbers on the transfer case without picking it apart? Any help/info is appreciated so I have something to put on the table when I complain to the transmission shop.
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No synchomesh in the t-case, ATF is probably very thin to use in it. Good old 75W90 GL4 or GL5 oil is fine. For the shift on the fly, ADD I assume? If so, check that the shop did not disconnect any of the ADD wiring on the case or at the front axle or the VSVs that switch the front axle in and out.
http://www.off-road.com/toyota/tech/add/index.htm
http://www.off-road.com/toyota/tech/add/index.htm
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Originally Posted by 4Crawler
No synchomesh in the t-case, ATF is probably very thin to use in it. Good old 75W90 GL4 or GL5 oil is fine. For the shift on the fly, ADD I assume? If so, check that the shop did not disconnect any of the ADD wiring on the case or at the front axle or the VSVs that switch the front axle in and out.
http://www.off-road.com/toyota/tech/add/index.htm
http://www.off-road.com/toyota/tech/add/index.htm
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Originally Posted by 4Crawler
Is it ADD or manual hubs? If ADD, the lube may have something to do with that. There is some sort of synchronizer mechanism for that to spin up the front driveshaft.
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get your vin from the ownership or front dash if you can make it out and go to 4crwalers site. he has a section to help decode your vin to see exactly what trans you have. my 93 uses atf in the t/case, but most others use gear oil. find out for sure what is supposed to be in there, then get the trans shop to rectify the situation.
lee
lee
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Originally Posted by leebee
get your vin from the ownership or front dash if you can make it out and go to 4crwalers site. he has a section to help decode your vin to see exactly what trans you have. my 93 uses atf in the t/case, but most others use gear oil. find out for sure what is supposed to be in there, then get the trans shop to rectify the situation.
lee
lee
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no the trans and t/case do not share the fluid, they are separate, sealed units. your trans code should be a340h and use atf. it may take some digging or prodding of the stealer to verify it, once you know, you are good to go.
lee
( hey, blondie!!)
lee
( hey, blondie!!)
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